Gts Applications 1
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midasGTS Applications Selected case studies
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Table of content Underground PC Culvert water line connection to shoreline dock................................................ 4 Underground path construction at a new building......................................................................... 6 Sosa ~ Nogsan new roadway ....................................................................................................... 8 Train car depot construction for Busan subway line 3 ................................................................ 10 Sosa ~ Nogsan tunnels ............................................................................................................... 12 New expressway route 60 ........................................................................................................... 14 Busan subway line 3 tunnel – zone 321...................................................................................... 16 South coast highway expansion (Sachun – SaIn)....................................................................... 18 New building construction ........................................................................................................... 20 Sosa – Nogsan roadway construction......................................................................................... 22 Excavated tunnel construction .................................................................................................... 24 Analysis for effects on subway tunnels due to construction of a new building ........................... 26 Overflow weir construction .......................................................................................................... 28 Mining shaft/tunnel construction.................................................................................................. 30 Tunnel stability analysis through a weak zone............................................................................ 32 High speed train track construction ............................................................................................. 34 Kosack – Soowon new roadway.................................................................................................. 36 High speed train track construction ............................................................................................. 38 Sewage discharge network construction..................................................................................... 40 Sewage pipe network construction ............................................................................................. 42 Sewage pipe network construction ............................................................................................. 44 Temporary railway bridge 1......................................................................................................... 46 Temporary railway bridge 2......................................................................................................... 48 A new roadway construction ....................................................................................................... 50 Seismic design through dynamic analysis .................................................................................. 52 Bridge – Foundation design......................................................................................................... 54 A new subway line construction .................................................................................................. 56 Analysis check for a weak fault zone .......................................................................................... 58 Bridge and underpath design ...................................................................................................... 60 A new roadway construction ....................................................................................................... 62 Kosack – Soowon new roadway.................................................................................................. 64 Y22 new development project ..................................................................................................... 66 Seoul new City Hall ..................................................................................................................... 68 Dubai Tower, Doha, Qatar .......................................................................................................... 70
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3
MIDAS/GTS Program Application [1]
Freyssinet
Engineer
Project Overview Title Project
Project Image
Underground PC Culvert water line connection to shoreline dock Design for construction TechSpan design for buried culvert connection
Scope
- Construction stage analysis - Differential soil pressure due to varying backfill levels - Effects from non-uniform live loads - Check for PC culvert connection
The underground structure, which is prefabricated concrete segments in the form
Overview of an arch, is analyzed in construction stages to reflect sequential backfill and pavements while fully accounting for soil-structure interaction.
Typical section
4
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MIDAS/GTS Modeling Pre-processing Global model overview
Native soil mesh generation
Post-processing Vert. displ. under culvert structure
After backfill (Iso Surface)
Axial forces of plate elements
Displacements due to live loads
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5
MIDAS/GTS Program Application [2]
Bu Kyoung Geo-Consultant
Engineer
Project Overview Title
Project
Project Image
Underground path construction at a new building
Design for construction Investigation of effects on
Scope
surrounding structures and facilities
Overview 1. Stability analysis for an underground path at an urban construction site 2. Excavation – Messer Shield Tunnel advancing construction method
Typical section
6
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MIDAS/GTS Modeling Pre-processing 3-D finite element mesh
Messer Shield Tunnel excavation
Post-processing Horiz. Displ. at connection (at stair)
History of displ. at connection path
Moment diagram for ventilation part
Shear force diagram for entrance part
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7
MIDAS/GTS Program Application [3]
Engineer
ChungSuk Engineering Project Overview
Title Project
Project Image
Sosa ~ Nogsan new roadway Turnkey Design Stability analysis of tunnels over a 100m length represented by a typical section of connection between main and utility tunnels.
Scope
Investigation for adequacy of shotcrete & rock bolts by checking stress concentration, displacements & member forces at connection zones.
Overview
Numerical analysis of shotcrete & rock bolt pattern and excavation method at main & utility tunnel connections
Typical section
Layout of shotcrete and rock bolts
Analysis section
8
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MIDAS/GTS Modeling Pre-processing Analysis model
Geometry - Solid
Post-processing Displacements (Z)
Ground Principal Stresses
Shotcrete Stresses
Rock bolt Axial forces
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9
MIDAS/GTS Program Application [4]
Engineer
Hakyung Engineering Project Overview
Title Project
Project Image
Train car depot construction for Busan subway line 3 Design for construction Analysis for effects on and stability of underground sewage box
Scope
structure under a train depot construction site due to new structures and fill placement
Overview
3-D numerical analysis for foundation soil replacement & fill placement to check existing sewage box structure
Typical section
10
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MIDAS/GTS Modeling Pre-processing Sewage box placement (Construction stage)
Analysis model
Post-processing Vert. displ. after 1st phase fill
Clipping Plane (vert stresses)
Vert. displ. after 2nd phase fill
Min. principal stresses
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MIDAS/GTS Program Application [5]
Daejeong Consultants
Engineer
Project Overview Title Project
Project Image
Sosa ~ Nogsan tunnels
Turnkey design Investigation for stability of
Scope
tunnels, shotcrete & rock bolts by analyzing stress concentration at the transverse tunnel connection
Displacements & stresses of tunnels, shotcrete and rock bolts were expected to
Overview increase significantly in the fault zone.
3-D construction stage analysis was
performed.
Typical section
12
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MIDAS/GTS Modeling Pre-processing Total analysis model
Model for tunnels, shotcrete & rock bolts
Post-processing Displacements (x)
Shotcrete stresses
Rock bolt axial forces
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MIDAS/GTS Program Application [6]
Engineer
Kaya ENG Project Overview
Title
Project
Scope
Overview
Project Image
New expressway route 60
Turnkey design Analysis for stability of foundation adjacent to a fault zone
Stability of bridge foundation in a fault zone was examined. The support strata were examined in detail relative to severely weathered faults.
Typical section
14
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MIDAS/GTS Modeling Pre-processing 3-D finite element mesh
Pile model
Post-processing Horizontal displacements
Vertical displacements
Pile axial forces
Pile moment diagram
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MIDAS/GTS Program Application [7]
Orum Engineering
Engineer
Project Overview Title Project
Project Image
Busan subway line 3 tunnel – zone 321 Design for construction
This new tunnel construction takes
Scope
place beneath major existing structures for which their stability must be ensured.
Overview
The zone 321 (STA.1+440~+580) intersects with an underground path, a waterway and another subway line. An existing bridge also exists in the longitudinal direction.
Plan & Typical section
16
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MIDAS/GTS Modeling Pre-processing Underground structure model
Micropile foundation reinforcement
Post-processing Settlement analysis results for Subway Line 1 piers
Settlement analysis results for
Shotcrete flexural axial stresses
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bridge piers
Rockbolt axial forces
17
MIDAS/GTS Program Application [8]
Engineer
Manyoung Eng Project Overview
Title
Project Image
South coast highway expansion (Sachun – SaIn)
Project
Design for construction
Scope
3-D blast vibration analysis
1. Modeling blast loads in surrounding mass due to blasting at a center cut hole
Overview
2. Time history analysis was performed to analyze the dynamic behavior of the ground mass. Vibration effects on the existing tunnels and ground surface were investigated.
Typical section
18
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MIDAS/GTS Modeling Pre-processing Analysis model
Existing tunnel shotcrete
Post-processing Displacements at new tunnel (0.01sec)
Displacements at new tunnel (1.0sec)
Expanded tunnel blast (0.01sec)
Expanded tunnel blast (1.0sec)
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MIDAS/GTS Program Application [9]
Engineer
Jinyoung E & C Project Overview
Title Project
Project Image
New building construction
Design for construction
Investigation of existing subway
Scope
structure subjected to excavation for new building construction
Safety investigation for 2-Arch tunnels and 1-Arch type tunnel where a large scale
Overview excavation for a new building foundation takes place with temporary shoring within the proximity of a 2D (D=tunnel diameter) distance
Underground structures
20
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MIDAS/GTS Modeling Pre-processing Subway station & tunnel model
Excavation zone with temp. shoring
2-Arch / 1-Arch connection part
Temp. shoring detail model
Subway station zone
Temp. shoring detail model
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MIDAS/GTS Program Application [10]
Engineer
Daejung Consultants Project Overview
Title
Project
Scope
Project Image
Sosa – Nogsan roadway construction
Turnkey design
3-D tunnel stability analysis
1. Tunnel exits are situated in weak layers of alluvial and weathered soils within 15m from the ground surface.
Overview 2. Since the tunnel exits are constructed after excavating the sloped surface, the surrounding ground will experience new stress fields, which exhibit different behaviors than the initial state of stresses.
Main sections
22
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MIDAS/GTS Modeling Pre-processing Total analysis model
Tunnel model
Post-processing Displacements (Dxyz)
Displacements (Dxyz) shotcrete & rock bolts
Shotcrete stresses
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MIDAS/GTS Program Application [11]
Engineer
Seoyeoung Engineering Project Overview
Title Project
Project Image
Excavated tunnel construction
Design for construction 3-D FEM analysis was performed to
Scope
investigate stability of tunnel and ground. Applicability of cover slab and arch was examined.
1. Excavated tunnel construction is applied where ground cover ranges from 0.7 to
Overview
5.8m passing underneath a valley. 2. Bedrock is sand stone with layers of shale underlain by shallow hard rock.
Typical sections
24
Cover slab
Cover arch
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MIDAS/GTS Modeling Pre-processing Cover slab
Cover arch
Post-processing Results after construction of cover slab
Results after construction
Stresses at tunnel excavation
Stresses after construction of cover arch
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MIDAS/GTS Program Application [12]
Bu Kyoung Geo-Consultant
Engineer
Project Overview
Project Image
Analysis for effects on subway
Title
tunnels due to construction of a new building
Project
Design for construction
Scope
Stability check for existing subway
Overview 1. Design of temporary shoring for excavation for a new building 2. Check existing subway in the proximity of new excavation
Main section
26
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MIDAS/GTS Modeling Pre-processing 3-D finite element mesh
Temporary structure model
Post-processing Tunnel center line stresses
Ground & temp. structure stresses after completion of construction
Shotcrete stresses
Temp structure (Strut & H-Pile) analysis results
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MIDAS/GTS Program Application [13]
Tejo Engineering
Engineer
Project Overview Title Project
Project Image
Overflow weir construction
Preliminary design 3-D numerical analysis of an overflow weir structure in which
Scope
settlement under the weir is reflected in the design of the structure
Overview
Check displacements, settlement and stresses of an overflow weir through 3-D numerical analysis
Elevation & sections
Overflow
28
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Roadway
MIDAS/GTS Modeling Pre-processing Analysis model
Overflow weir
Post-processing Displacements (XYZ)
Principal stresses in vert. direction
Vertical displacements
Horizontal displacements
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MIDAS/GTS Program Application [14]
Daehan Consultant
Engineer
Project Overview Title Project
Project Image
Mining shaft/tunnel construction
Design for construction
Mine facilities (vert. shaft / machine
Scope
room / explosives storage etc.) design
Overview 1. Complex excavation from horizontal tunnels to vertical shaft to machine room 2. 3-D staged analysis
Main section
30
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MIDAS/GTS Modeling Pre-processing Analysis model
Underground facilities model
Post-processing Clipping plane
Vertical shaft connection
Analysis results for underground facilities
Principal stresses
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MIDAS/GTS Program Application [15]
Pyunghwa Engineering
Engineer
Project Overview Title Project
Project Image
Tunnel stability analysis through a weak zone Design for construction Fault zone and ground conditions are closely examined to perform
Scope
analysis for tunnel construction in the weak zone while reflecting reinforcement.
Displacements & stresses of tunnels, shotcrete and rock bolts were expected to
Overview increase significantly in the fault zone.
3-D construction stage analysis was
performed.
Main section
32
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MIDAS/GTS Modeling Pre-processing Analysis model
Reinforcement zone at exits (shotcrete & rock bolts model)
Post-processing Clipping Plane
Analysis results at reinf. zone
Displacements
Stresses
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MIDAS/GTS Program Application [16]
SunKoo Engineering
Engineer
Project Overview Title
Project
Scope
Overview
High
speed
train
Project Image track
construction
Design for construction
Analysis of train track base for train vibration Numerical analysis of ground vibration characteristics with varying train moving speeds relative to different thicknesses of track base
Key plan
34
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MIDAS/GTS Modeling Pre-processing Analysis model
Ground & Loadcase
Post-processing Displacements
Displacements for moving train
LSS-22 standard liveload
Time history graph
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MIDAS/GTS Program Application [17]
Engineer
Dongshin Tech Development Project Overview
Title Project
Scope
Project Image
Kosack – Soowon new roadway
Design for construction
2/3-D numerical analysis of bridge foundation
1. Abutment and backfill exhibit 3-D behavior, and as such construction stage
Overview
analysis is required. 2. Pier P1 is constructed within a temporarily shored excavation, which requires construction stage analysis.
Plan, section & elevation
36
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MIDAS/GTS Modeling Pre-processing Analysis model
Close-up of foundation
Post-processing Vertical displacements after construction
Analysis results of abutment fdn.
Close-up of displacements
Abutment model isolated
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MIDAS/GTS Program Application [18]
Engineer
Daehan Consultant Project Overview
Title Project
Project Image
High speed train track construction Design for construction Investigation of effects on
Scope
existing highway bridge pier and sewage box structure due to tunnel excavation 1. Tunnel excavation beneath an existing highway bridge and a large section
Overview
sewage box structure 2. Investigation for needs for reinforcing both structures 3. Check movements and stability of both structures
Plan Potential damage assessment was performed for tunnel excavation, which crosses the existing structures at STA. 271km 240~380 (L=140m zone).
38
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MIDAS/GTS Modeling Pre-processing 3-D finite element mesh
Pier foundation & box (side)
Pier foundation & box (front)
Flying view
Post-processing Vertical stress diagram
Horizontal stress diagram
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MIDAS/GTS Program Application [19]
Engineer
Dongshin Tech Development Project Overview
Title Project
Scope
Project Image
Sewage discharge network construction Private sector financed project
Stability check for open cut excavation method
1. After assembling panels, excavation & placement take place simultaneously Î
Overview
very fast operation 2. No hammering, vibration & noise process Î pollution & disturbance minimized 3. For high ground water level Î SCW method employed to cut off water
Typical section Temp shoring (double slide rail) (Excavation depth: 4.0~6.0m)
40
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MIDAS/GTS Modeling Pre-processing Initial stabilization
Excavation & temp structure erection
Post-processing Vertical displacements
Stresses in temp structures
Clipping plane
Hor. Stresses in temp structures
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MIDAS/GTS Program Application [20]
Engineer
Dongshin Tech Development Project Overview
Title
Project
Scope
Project Image
Sewage pipe network construction
Private sector financed project
Stability check based on semishielded excavation method
1. Advancing with a specifically fabricated shield head
Overview 2. Possibility of excavating a long distance 3. Advantageous in weak soil and high ground water table
Setup
Semi-shield method
42
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MIDAS/GTS Modeling Pre-processing Initial stage
Advancing pipe
Post-processing Ground displacements after pipe advanced
Close-up of displacements
Stresses at tunnel excavation
Close-up of stresses
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MIDAS/GTS Program Application [21]
Engineer
Dongshin Tech Development Project Overview
Title
Project
Scope
Overview
Project Image
Sewage pipe network construction
Private sector financed project
Structural analysis of buried pipe in weak ground
1. Pipe support base Î 180° sand bed 2. Depth of pipe Î within 1.0~6.5m
Typical section
44
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MIDAS/GTS Modeling Pre-processing Analysis model
Polyethylene pipe
Post-processing Embedded pipe
Total displacements
Max principal stresses
Ground principal stresses
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MIDAS/GTS Program Application [22]
Engineer
DongA Geotechs Project Overview
Title Project
Project Image
Temporary railway bridge 1
Design for construction Check settlement of soil
Scope
retained by shored walls during excavation
1. For pedestrian path construction, JES and open cut shoring methods are used.
Overview
2. Existing railway slope consists of retaining walls at front, which is further sloped at the top.
Key plan
Path zone A: H = 4.4 ~ 13.2m
46
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MIDAS/GTS Modeling Pre-processing Initial stage
Temp structure erection
Post-processing Vertical displacements
Earth anchor axial forces
Total displacements
Temp structure moments
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MIDAS/GTS Program Application [23]
Engineer
DongA Geotechs Project Overview
Title Project
Project Image
Temporary railway bridge 2
Design for construction Check settlement of soil
Scope
retained by shored walls during excavation
1. For pedestrian path construction, JES and open cut shoring methods are used.
Overview
3. Existing railway slope consists of retaining walls at front, which is further sloped at the top.
Key plan
Path zone A: H = 4.4 ~ 13.2m
48
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MIDAS/GTS Modeling Pre-processing Initial stage
Final excavation
Post-processing Vertical displacements
Soldier pile moment diagram
Settlement graphs by distances
Tie load & nailing axial forces
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MIDAS/GTS Program Application [24]
Engineer
Moojin NeoTech Project Overview
Title Project
Project Image
A new roadway construction
Turnkey design Investigation for stability of
Scope
adjacent tunnel due to blasting for a new tunnel 1. When modeling ground, which is infinite in mass, normal boundary conditions result in reflecting waves. So viscosity boundary is used instead.
Overview 2. Dynamic properties are found through eigenvalue analysis. 3. Time history analysis is carried out to investigate dynamic behaviors of structures due to dynamic blast load
Key plan Calculation of blast loads
50
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MIDAS/GTS Modeling Pre-processing Initial stage
Blast load
Post-processing Vertical displacements
Vibration history speed curve
Shotcrete axial forces
Stresses after erecting cover arch
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MIDAS/GTS Program Application [25]
Engineer
Project Overview Title Project
Scope
Project Image
Seismic design through dynamic analysis Preliminary design
Seismic analysis of pipe by time history method
1. Pipe design based on dynamic analysis of pipe and connections
Overview 2. True earthquake records such as Hachinohe wave or Ofunato wave and artificial earthquake are used as input.
Waves & section
Artificial wave
Analysis section
Hachinohe wave (long period)
52
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MIDAS/GTS Modeling Pre-processing Eigenvalue analysis results – 1st & 2nd periods
Time history analysis (ground movement)
Post-processing Perpendicular to the pipe axis (X,Y)
Clipping plane
Hachinohe ground movement
Stresses inside the pipe
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MIDAS/GTS Program Application [26]
Engineer
Tejo Engineering
Project Overview Title
Project
Scope
Overview
Project Image
Bridge – Foundation design
Preliminary design
Structure & foundation interaction analysis
3-D numerical analysis for a bridge structure was performed, which reflected settlement of the abutment foundation.
Plan & perspective views
54
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MIDAS/GTS Modeling Pre-processing Analysis model
Close-up of bridge
Post-processing Displacements after construction (XYZ)
After foundation construction
Displacements after foundation construction (XYZ)
Displacements (XYZ)
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MIDAS/GTS Program Application [27]
Engineer
Undisclosed Project Overview
Title
Project
Scope
Project Image
A new subway line construction
Design for construction Structural analysis for subway tunnel & utility tunnel crossing
3-D analysis was performed to investigate anticipated stress concentration at the
Overview
crossing of a main subway tunnel and a utility tunnel. Effects on the utility tunnel were focused during the subway tunnel excavation.
Key plan & section
Extent of analysis 56
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MIDAS/GTS Modeling Pre-processing Analysis model
Shotcrete-rock bolt in analysis
Post-processing Yield Ratio
Rock bolt axial forces
Stresses at crossing
Stresses at vertical connection
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MIDAS/GTS Program Application [28]
Engineer
Yongma Engineering Project Overview
Title
Project
Scope
Project Image
Analysis check for a weak fault zone
Design for construction
Stress-seepage coupled analysis in a fault zone 1. The strike and slope of a fault affect the behavior of tunnels.
Ground
configuration properties and stratification in the fault zone are reflected in a numerical analysis model to design shotcrete and rock bolts.
Overview 2. Geological investigation identified undesirable physical properties and high permeability of the rock in the fault zone. Development of pore pressure and decrease in groundwater level are expected to adversely affect the shotcrete and rock bolts.
Main section
58
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MIDAS/GTS Modeling Pre-processing Analysis model
Shotcrete-rock bolts model
Post-processing Horizontal displacements
Pattern of waterhead distribution
Rock bolt axial forces
Water pressure distribution
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MIDAS/GTS Program Application [29]
Engineer
Kaya ENG Project Overview
Title
Project
Scope
Overview
Project Image
Bridge and underpath design
Value engineering
Abutment foundation design by construction stage analysis
Analysis of vertical and horizontal displacements of abutments and pile caps
Section, key plan & perspective view
60
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MIDAS/GTS Modeling Pre-processing Analysis model
Flying view
Post-processing Displacements
On-curve diagram
Vertical displacements of abutment piles
Analysis results in Flying view
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MIDAS/GTS Program Application [30]
Engineer
Dongshin Tech Development Project Overview
Title Project
Project Image
A new roadway construction
Design for construction Differential settlements check for a
Scope
traffic underground path supported on different soil stratification
Overview
Design of underground path and its foundation support for its own weight & backfill. Design of the concrete structure to reflect differential settlements.
Typical sections
Strut+Earth Anchor
62
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Removable Earth Anchor
MIDAS/GTS Modeling Pre-processing Analysis model
Close-up at abutment foundation
Post-processing Vertical displacements at final excavation
Horizontal displacements at final excavation
Temporary support structure
Horizontal stresses at final excavation
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MIDAS/GTS Program Application [31]
Engineer
Dongshin Tech Development Project Overview
Title
Project
Scope
Project Image
Kosack – Soowon new roadway
Design for construction
Seismic analysis of bridge substructure
1. Seismic analysis (equivalent static, dynamic & response spectrum analyses)
Overview 2. Construction stage analysis of bridge
Design Criteria
Artificial earthquake waves
Design earthquake wave
64
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MIDAS/GTS Modeling Pre-processing Analysis model
Close-up of pier
Post-processing Vert. displacements after excavation
Pile moment diagram
Vert. displacements of pier piles
Pattern of vert. displacements
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MIDAS/GTS Program Application [32]
Engineer
midasIT for Ove Arup, Singapore Project Overview
Title
Project
Project Image
Y22 new development project
Design for construction
stability of subway structure when
Scope
excavating the building site
The development project is the construction of a 70 stories high twin building in the
Overview
Yeouido district of Seoul, Korea. The excavation site is located nearby the subway line 5. The effects of excavation on the existing subway tunnel are investigated by construction stage analysis.
Key plan
66
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MIDAS/GTS Modeling Pre-processing Preliminary 2D model
3D model
Post-processing Vert. displacements after excavation
Stresses in subway lining
Vert. displacements of the shaft
Axial forces in the rock bolts
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MIDAS/GTS Program Application [33]
Engineer
Samsung Engineering & Construction Project Overview
Title
Project
Scope
Project Image
Seoul new City Hall
Design for construction
Excavation stability
Overview
Key plan
68
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MIDAS/GTS Modeling Pre-processing Geometry
Mesh
Excavation layers
Columns
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MIDAS/GTS Program Application [34]
Hyder Consulting Ltd, UK
Engineer
Project Overview Title Project
Project Image
Dubai Tower, Doha, Qatar Piled-raft foundation design
Analysis results for design:
Scope
- Settlements - Raft forces and bending moments - Pile forces and bending moments
The proposed development for the Dubai Tower project comprises the construction of an approximately eighty floor high rise tower with mezzanine,
Overview ground floor and five basement levels and will be the tallest structure in Qatar when it is complete. The tower is founded on a piled raft. In order to fully understand the behaviour of the foundation, a 3D finite element model is required.
Pile scheme
70
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MIDAS/GTS Modeling Pre-processing Podium and basement levels
Side view, Piles and Basement
Post-processing Quarter cut on settlement results
Bending moments in the raft
Vertical stress in the rock layers
Pile axial forces
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2
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Table of content Underground PC Culvert water line connection to shoreline dock................................................ 4 Underground path construction at a new building......................................................................... 6 Sosa ~ Nogsan new roadway ....................................................................................................... 8 Train car depot construction for Busan subway line 3 ................................................................ 10 Sosa ~ Nogsan tunnels ............................................................................................................... 12 New expressway route 60 ........................................................................................................... 14 Busan subway line 3 tunnel – zone 321...................................................................................... 16 South coast highway expansion (Sachun – SaIn)....................................................................... 18 New building construction ........................................................................................................... 20 Sosa – Nogsan roadway construction......................................................................................... 22 Excavated tunnel construction .................................................................................................... 24 Analysis for effects on subway tunnels due to construction of a new building ........................... 26 Overflow weir construction .......................................................................................................... 28 Mining shaft/tunnel construction.................................................................................................. 30 Tunnel stability analysis through a weak zone............................................................................ 32 High speed train track construction ............................................................................................. 34 Kosack – Soowon new roadway.................................................................................................. 36 High speed train track construction ............................................................................................. 38 Sewage discharge network construction..................................................................................... 40 Sewage pipe network construction ............................................................................................. 42 Sewage pipe network construction ............................................................................................. 44 Temporary railway bridge 1......................................................................................................... 46 Temporary railway bridge 2......................................................................................................... 48 A new roadway construction ....................................................................................................... 50 Seismic design through dynamic analysis .................................................................................. 52 Bridge – Foundation design......................................................................................................... 54 A new subway line construction .................................................................................................. 56 Analysis check for a weak fault zone .......................................................................................... 58 Bridge and underpath design ...................................................................................................... 60 A new roadway construction ....................................................................................................... 62 Kosack – Soowon new roadway.................................................................................................. 64 Y22 new development project ..................................................................................................... 66 Seoul new City Hall ..................................................................................................................... 68 Dubai Tower, Doha, Qatar .......................................................................................................... 70
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3
MIDAS/GTS Program Application [1]
Freyssinet
Engineer
Project Overview Title Project
Project Image
Underground PC Culvert water line connection to shoreline dock Design for construction TechSpan design for buried culvert connection
Scope
- Construction stage analysis - Differential soil pressure due to varying backfill levels - Effects from non-uniform live loads - Check for PC culvert connection
The underground structure, which is prefabricated concrete segments in the form
Overview of an arch, is analyzed in construction stages to reflect sequential backfill and pavements while fully accounting for soil-structure interaction.
Typical section
4
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MIDAS/GTS Modeling Pre-processing Global model overview
Native soil mesh generation
Post-processing Vert. displ. under culvert structure
After backfill (Iso Surface)
Axial forces of plate elements
Displacements due to live loads
www.midas-diana.com/gts
5
MIDAS/GTS Program Application [2]
Bu Kyoung Geo-Consultant
Engineer
Project Overview Title
Project
Project Image
Underground path construction at a new building
Design for construction Investigation of effects on
Scope
surrounding structures and facilities
Overview 1. Stability analysis for an underground path at an urban construction site 2. Excavation – Messer Shield Tunnel advancing construction method
Typical section
6
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MIDAS/GTS Modeling Pre-processing 3-D finite element mesh
Messer Shield Tunnel excavation
Post-processing Horiz. Displ. at connection (at stair)
History of displ. at connection path
Moment diagram for ventilation part
Shear force diagram for entrance part
www.midas-diana.com/gts
7
MIDAS/GTS Program Application [3]
Engineer
ChungSuk Engineering Project Overview
Title Project
Project Image
Sosa ~ Nogsan new roadway Turnkey Design Stability analysis of tunnels over a 100m length represented by a typical section of connection between main and utility tunnels.
Scope
Investigation for adequacy of shotcrete & rock bolts by checking stress concentration, displacements & member forces at connection zones.
Overview
Numerical analysis of shotcrete & rock bolt pattern and excavation method at main & utility tunnel connections
Typical section
Layout of shotcrete and rock bolts
Analysis section
8
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MIDAS/GTS Modeling Pre-processing Analysis model
Geometry - Solid
Post-processing Displacements (Z)
Ground Principal Stresses
Shotcrete Stresses
Rock bolt Axial forces
www.midas-diana.com/gts
9
MIDAS/GTS Program Application [4]
Engineer
Hakyung Engineering Project Overview
Title Project
Project Image
Train car depot construction for Busan subway line 3 Design for construction Analysis for effects on and stability of underground sewage box
Scope
structure under a train depot construction site due to new structures and fill placement
Overview
3-D numerical analysis for foundation soil replacement & fill placement to check existing sewage box structure
Typical section
10
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MIDAS/GTS Modeling Pre-processing Sewage box placement (Construction stage)
Analysis model
Post-processing Vert. displ. after 1st phase fill
Clipping Plane (vert stresses)
Vert. displ. after 2nd phase fill
Min. principal stresses
www.midas-diana.com/gts
11
MIDAS/GTS Program Application [5]
Daejeong Consultants
Engineer
Project Overview Title Project
Project Image
Sosa ~ Nogsan tunnels
Turnkey design Investigation for stability of
Scope
tunnels, shotcrete & rock bolts by analyzing stress concentration at the transverse tunnel connection
Displacements & stresses of tunnels, shotcrete and rock bolts were expected to
Overview increase significantly in the fault zone.
3-D construction stage analysis was
performed.
Typical section
12
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MIDAS/GTS Modeling Pre-processing Total analysis model
Model for tunnels, shotcrete & rock bolts
Post-processing Displacements (x)
Shotcrete stresses
Rock bolt axial forces
www.midas-diana.com/gts
13
MIDAS/GTS Program Application [6]
Engineer
Kaya ENG Project Overview
Title
Project
Scope
Overview
Project Image
New expressway route 60
Turnkey design Analysis for stability of foundation adjacent to a fault zone
Stability of bridge foundation in a fault zone was examined. The support strata were examined in detail relative to severely weathered faults.
Typical section
14
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MIDAS/GTS Modeling Pre-processing 3-D finite element mesh
Pile model
Post-processing Horizontal displacements
Vertical displacements
Pile axial forces
Pile moment diagram
www.midas-diana.com/gts
15
MIDAS/GTS Program Application [7]
Orum Engineering
Engineer
Project Overview Title Project
Project Image
Busan subway line 3 tunnel – zone 321 Design for construction
This new tunnel construction takes
Scope
place beneath major existing structures for which their stability must be ensured.
Overview
The zone 321 (STA.1+440~+580) intersects with an underground path, a waterway and another subway line. An existing bridge also exists in the longitudinal direction.
Plan & Typical section
16
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MIDAS/GTS Modeling Pre-processing Underground structure model
Micropile foundation reinforcement
Post-processing Settlement analysis results for Subway Line 1 piers
Settlement analysis results for
Shotcrete flexural axial stresses
www.midas-diana.com/gts
bridge piers
Rockbolt axial forces
17
MIDAS/GTS Program Application [8]
Engineer
Manyoung Eng Project Overview
Title
Project Image
South coast highway expansion (Sachun – SaIn)
Project
Design for construction
Scope
3-D blast vibration analysis
1. Modeling blast loads in surrounding mass due to blasting at a center cut hole
Overview
2. Time history analysis was performed to analyze the dynamic behavior of the ground mass. Vibration effects on the existing tunnels and ground surface were investigated.
Typical section
18
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MIDAS/GTS Modeling Pre-processing Analysis model
Existing tunnel shotcrete
Post-processing Displacements at new tunnel (0.01sec)
Displacements at new tunnel (1.0sec)
Expanded tunnel blast (0.01sec)
Expanded tunnel blast (1.0sec)
www.midas-diana.com/gts
19
MIDAS/GTS Program Application [9]
Engineer
Jinyoung E & C Project Overview
Title Project
Project Image
New building construction
Design for construction
Investigation of existing subway
Scope
structure subjected to excavation for new building construction
Safety investigation for 2-Arch tunnels and 1-Arch type tunnel where a large scale
Overview excavation for a new building foundation takes place with temporary shoring within the proximity of a 2D (D=tunnel diameter) distance
Underground structures
20
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MIDAS/GTS Modeling Pre-processing Subway station & tunnel model
Excavation zone with temp. shoring
2-Arch / 1-Arch connection part
Temp. shoring detail model
Subway station zone
Temp. shoring detail model
www.midas-diana.com/gts
21
MIDAS/GTS Program Application [10]
Engineer
Daejung Consultants Project Overview
Title
Project
Scope
Project Image
Sosa – Nogsan roadway construction
Turnkey design
3-D tunnel stability analysis
1. Tunnel exits are situated in weak layers of alluvial and weathered soils within 15m from the ground surface.
Overview 2. Since the tunnel exits are constructed after excavating the sloped surface, the surrounding ground will experience new stress fields, which exhibit different behaviors than the initial state of stresses.
Main sections
22
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MIDAS/GTS Modeling Pre-processing Total analysis model
Tunnel model
Post-processing Displacements (Dxyz)
Displacements (Dxyz) shotcrete & rock bolts
Shotcrete stresses
www.midas-diana.com/gts
23
MIDAS/GTS Program Application [11]
Engineer
Seoyeoung Engineering Project Overview
Title Project
Project Image
Excavated tunnel construction
Design for construction 3-D FEM analysis was performed to
Scope
investigate stability of tunnel and ground. Applicability of cover slab and arch was examined.
1. Excavated tunnel construction is applied where ground cover ranges from 0.7 to
Overview
5.8m passing underneath a valley. 2. Bedrock is sand stone with layers of shale underlain by shallow hard rock.
Typical sections
24
Cover slab
Cover arch
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MIDAS/GTS Modeling Pre-processing Cover slab
Cover arch
Post-processing Results after construction of cover slab
Results after construction
Stresses at tunnel excavation
Stresses after construction of cover arch
www.midas-diana.com/gts
25
MIDAS/GTS Program Application [12]
Bu Kyoung Geo-Consultant
Engineer
Project Overview
Project Image
Analysis for effects on subway
Title
tunnels due to construction of a new building
Project
Design for construction
Scope
Stability check for existing subway
Overview 1. Design of temporary shoring for excavation for a new building 2. Check existing subway in the proximity of new excavation
Main section
26
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MIDAS/GTS Modeling Pre-processing 3-D finite element mesh
Temporary structure model
Post-processing Tunnel center line stresses
Ground & temp. structure stresses after completion of construction
Shotcrete stresses
Temp structure (Strut & H-Pile) analysis results
www.midas-diana.com/gts
27
MIDAS/GTS Program Application [13]
Tejo Engineering
Engineer
Project Overview Title Project
Project Image
Overflow weir construction
Preliminary design 3-D numerical analysis of an overflow weir structure in which
Scope
settlement under the weir is reflected in the design of the structure
Overview
Check displacements, settlement and stresses of an overflow weir through 3-D numerical analysis
Elevation & sections
Overflow
28
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Roadway
MIDAS/GTS Modeling Pre-processing Analysis model
Overflow weir
Post-processing Displacements (XYZ)
Principal stresses in vert. direction
Vertical displacements
Horizontal displacements
www.midas-diana.com/gts
29
MIDAS/GTS Program Application [14]
Daehan Consultant
Engineer
Project Overview Title Project
Project Image
Mining shaft/tunnel construction
Design for construction
Mine facilities (vert. shaft / machine
Scope
room / explosives storage etc.) design
Overview 1. Complex excavation from horizontal tunnels to vertical shaft to machine room 2. 3-D staged analysis
Main section
30
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MIDAS/GTS Modeling Pre-processing Analysis model
Underground facilities model
Post-processing Clipping plane
Vertical shaft connection
Analysis results for underground facilities
Principal stresses
www.midas-diana.com/gts
31
MIDAS/GTS Program Application [15]
Pyunghwa Engineering
Engineer
Project Overview Title Project
Project Image
Tunnel stability analysis through a weak zone Design for construction Fault zone and ground conditions are closely examined to perform
Scope
analysis for tunnel construction in the weak zone while reflecting reinforcement.
Displacements & stresses of tunnels, shotcrete and rock bolts were expected to
Overview increase significantly in the fault zone.
3-D construction stage analysis was
performed.
Main section
32
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MIDAS/GTS Modeling Pre-processing Analysis model
Reinforcement zone at exits (shotcrete & rock bolts model)
Post-processing Clipping Plane
Analysis results at reinf. zone
Displacements
Stresses
www.midas-diana.com/gts
33
MIDAS/GTS Program Application [16]
SunKoo Engineering
Engineer
Project Overview Title
Project
Scope
Overview
High
speed
train
Project Image track
construction
Design for construction
Analysis of train track base for train vibration Numerical analysis of ground vibration characteristics with varying train moving speeds relative to different thicknesses of track base
Key plan
34
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MIDAS/GTS Modeling Pre-processing Analysis model
Ground & Loadcase
Post-processing Displacements
Displacements for moving train
LSS-22 standard liveload
Time history graph
www.midas-diana.com/gts
35
MIDAS/GTS Program Application [17]
Engineer
Dongshin Tech Development Project Overview
Title Project
Scope
Project Image
Kosack – Soowon new roadway
Design for construction
2/3-D numerical analysis of bridge foundation
1. Abutment and backfill exhibit 3-D behavior, and as such construction stage
Overview
analysis is required. 2. Pier P1 is constructed within a temporarily shored excavation, which requires construction stage analysis.
Plan, section & elevation
36
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MIDAS/GTS Modeling Pre-processing Analysis model
Close-up of foundation
Post-processing Vertical displacements after construction
Analysis results of abutment fdn.
Close-up of displacements
Abutment model isolated
www.midas-diana.com/gts
37
MIDAS/GTS Program Application [18]
Engineer
Daehan Consultant Project Overview
Title Project
Project Image
High speed train track construction Design for construction Investigation of effects on
Scope
existing highway bridge pier and sewage box structure due to tunnel excavation 1. Tunnel excavation beneath an existing highway bridge and a large section
Overview
sewage box structure 2. Investigation for needs for reinforcing both structures 3. Check movements and stability of both structures
Plan Potential damage assessment was performed for tunnel excavation, which crosses the existing structures at STA. 271km 240~380 (L=140m zone).
38
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MIDAS/GTS Modeling Pre-processing 3-D finite element mesh
Pier foundation & box (side)
Pier foundation & box (front)
Flying view
Post-processing Vertical stress diagram
Horizontal stress diagram
www.midas-diana.com/gts
39
MIDAS/GTS Program Application [19]
Engineer
Dongshin Tech Development Project Overview
Title Project
Scope
Project Image
Sewage discharge network construction Private sector financed project
Stability check for open cut excavation method
1. After assembling panels, excavation & placement take place simultaneously Î
Overview
very fast operation 2. No hammering, vibration & noise process Î pollution & disturbance minimized 3. For high ground water level Î SCW method employed to cut off water
Typical section Temp shoring (double slide rail) (Excavation depth: 4.0~6.0m)
40
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MIDAS/GTS Modeling Pre-processing Initial stabilization
Excavation & temp structure erection
Post-processing Vertical displacements
Stresses in temp structures
Clipping plane
Hor. Stresses in temp structures
www.midas-diana.com/gts
41
MIDAS/GTS Program Application [20]
Engineer
Dongshin Tech Development Project Overview
Title
Project
Scope
Project Image
Sewage pipe network construction
Private sector financed project
Stability check based on semishielded excavation method
1. Advancing with a specifically fabricated shield head
Overview 2. Possibility of excavating a long distance 3. Advantageous in weak soil and high ground water table
Setup
Semi-shield method
42
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MIDAS/GTS Modeling Pre-processing Initial stage
Advancing pipe
Post-processing Ground displacements after pipe advanced
Close-up of displacements
Stresses at tunnel excavation
Close-up of stresses
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43
MIDAS/GTS Program Application [21]
Engineer
Dongshin Tech Development Project Overview
Title
Project
Scope
Overview
Project Image
Sewage pipe network construction
Private sector financed project
Structural analysis of buried pipe in weak ground
1. Pipe support base Î 180° sand bed 2. Depth of pipe Î within 1.0~6.5m
Typical section
44
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MIDAS/GTS Modeling Pre-processing Analysis model
Polyethylene pipe
Post-processing Embedded pipe
Total displacements
Max principal stresses
Ground principal stresses
www.midas-diana.com/gts
45
MIDAS/GTS Program Application [22]
Engineer
DongA Geotechs Project Overview
Title Project
Project Image
Temporary railway bridge 1
Design for construction Check settlement of soil
Scope
retained by shored walls during excavation
1. For pedestrian path construction, JES and open cut shoring methods are used.
Overview
2. Existing railway slope consists of retaining walls at front, which is further sloped at the top.
Key plan
Path zone A: H = 4.4 ~ 13.2m
46
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MIDAS/GTS Modeling Pre-processing Initial stage
Temp structure erection
Post-processing Vertical displacements
Earth anchor axial forces
Total displacements
Temp structure moments
www.midas-diana.com/gts
47
MIDAS/GTS Program Application [23]
Engineer
DongA Geotechs Project Overview
Title Project
Project Image
Temporary railway bridge 2
Design for construction Check settlement of soil
Scope
retained by shored walls during excavation
1. For pedestrian path construction, JES and open cut shoring methods are used.
Overview
3. Existing railway slope consists of retaining walls at front, which is further sloped at the top.
Key plan
Path zone A: H = 4.4 ~ 13.2m
48
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MIDAS/GTS Modeling Pre-processing Initial stage
Final excavation
Post-processing Vertical displacements
Soldier pile moment diagram
Settlement graphs by distances
Tie load & nailing axial forces
www.midas-diana.com/gts
49
MIDAS/GTS Program Application [24]
Engineer
Moojin NeoTech Project Overview
Title Project
Project Image
A new roadway construction
Turnkey design Investigation for stability of
Scope
adjacent tunnel due to blasting for a new tunnel 1. When modeling ground, which is infinite in mass, normal boundary conditions result in reflecting waves. So viscosity boundary is used instead.
Overview 2. Dynamic properties are found through eigenvalue analysis. 3. Time history analysis is carried out to investigate dynamic behaviors of structures due to dynamic blast load
Key plan Calculation of blast loads
50
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MIDAS/GTS Modeling Pre-processing Initial stage
Blast load
Post-processing Vertical displacements
Vibration history speed curve
Shotcrete axial forces
Stresses after erecting cover arch
www.midas-diana.com/gts
51
MIDAS/GTS Program Application [25]
Engineer
Project Overview Title Project
Scope
Project Image
Seismic design through dynamic analysis Preliminary design
Seismic analysis of pipe by time history method
1. Pipe design based on dynamic analysis of pipe and connections
Overview 2. True earthquake records such as Hachinohe wave or Ofunato wave and artificial earthquake are used as input.
Waves & section
Artificial wave
Analysis section
Hachinohe wave (long period)
52
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MIDAS/GTS Modeling Pre-processing Eigenvalue analysis results – 1st & 2nd periods
Time history analysis (ground movement)
Post-processing Perpendicular to the pipe axis (X,Y)
Clipping plane
Hachinohe ground movement
Stresses inside the pipe
www.midas-diana.com/gts
53
MIDAS/GTS Program Application [26]
Engineer
Tejo Engineering
Project Overview Title
Project
Scope
Overview
Project Image
Bridge – Foundation design
Preliminary design
Structure & foundation interaction analysis
3-D numerical analysis for a bridge structure was performed, which reflected settlement of the abutment foundation.
Plan & perspective views
54
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MIDAS/GTS Modeling Pre-processing Analysis model
Close-up of bridge
Post-processing Displacements after construction (XYZ)
After foundation construction
Displacements after foundation construction (XYZ)
Displacements (XYZ)
www.midas-diana.com/gts
55
MIDAS/GTS Program Application [27]
Engineer
Undisclosed Project Overview
Title
Project
Scope
Project Image
A new subway line construction
Design for construction Structural analysis for subway tunnel & utility tunnel crossing
3-D analysis was performed to investigate anticipated stress concentration at the
Overview
crossing of a main subway tunnel and a utility tunnel. Effects on the utility tunnel were focused during the subway tunnel excavation.
Key plan & section
Extent of analysis 56
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MIDAS/GTS Modeling Pre-processing Analysis model
Shotcrete-rock bolt in analysis
Post-processing Yield Ratio
Rock bolt axial forces
Stresses at crossing
Stresses at vertical connection
www.midas-diana.com/gts
57
MIDAS/GTS Program Application [28]
Engineer
Yongma Engineering Project Overview
Title
Project
Scope
Project Image
Analysis check for a weak fault zone
Design for construction
Stress-seepage coupled analysis in a fault zone 1. The strike and slope of a fault affect the behavior of tunnels.
Ground
configuration properties and stratification in the fault zone are reflected in a numerical analysis model to design shotcrete and rock bolts.
Overview 2. Geological investigation identified undesirable physical properties and high permeability of the rock in the fault zone. Development of pore pressure and decrease in groundwater level are expected to adversely affect the shotcrete and rock bolts.
Main section
58
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MIDAS/GTS Modeling Pre-processing Analysis model
Shotcrete-rock bolts model
Post-processing Horizontal displacements
Pattern of waterhead distribution
Rock bolt axial forces
Water pressure distribution
www.midas-diana.com/gts
59
MIDAS/GTS Program Application [29]
Engineer
Kaya ENG Project Overview
Title
Project
Scope
Overview
Project Image
Bridge and underpath design
Value engineering
Abutment foundation design by construction stage analysis
Analysis of vertical and horizontal displacements of abutments and pile caps
Section, key plan & perspective view
60
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MIDAS/GTS Modeling Pre-processing Analysis model
Flying view
Post-processing Displacements
On-curve diagram
Vertical displacements of abutment piles
Analysis results in Flying view
www.midas-diana.com/gts
61
MIDAS/GTS Program Application [30]
Engineer
Dongshin Tech Development Project Overview
Title Project
Project Image
A new roadway construction
Design for construction Differential settlements check for a
Scope
traffic underground path supported on different soil stratification
Overview
Design of underground path and its foundation support for its own weight & backfill. Design of the concrete structure to reflect differential settlements.
Typical sections
Strut+Earth Anchor
62
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Removable Earth Anchor
MIDAS/GTS Modeling Pre-processing Analysis model
Close-up at abutment foundation
Post-processing Vertical displacements at final excavation
Horizontal displacements at final excavation
Temporary support structure
Horizontal stresses at final excavation
www.midas-diana.com/gts
63
MIDAS/GTS Program Application [31]
Engineer
Dongshin Tech Development Project Overview
Title
Project
Scope
Project Image
Kosack – Soowon new roadway
Design for construction
Seismic analysis of bridge substructure
1. Seismic analysis (equivalent static, dynamic & response spectrum analyses)
Overview 2. Construction stage analysis of bridge
Design Criteria
Artificial earthquake waves
Design earthquake wave
64
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MIDAS/GTS Modeling Pre-processing Analysis model
Close-up of pier
Post-processing Vert. displacements after excavation
Pile moment diagram
Vert. displacements of pier piles
Pattern of vert. displacements
www.midas-diana.com/gts
65
MIDAS/GTS Program Application [32]
Engineer
midasIT for Ove Arup, Singapore Project Overview
Title
Project
Project Image
Y22 new development project
Design for construction
stability of subway structure when
Scope
excavating the building site
The development project is the construction of a 70 stories high twin building in the
Overview
Yeouido district of Seoul, Korea. The excavation site is located nearby the subway line 5. The effects of excavation on the existing subway tunnel are investigated by construction stage analysis.
Key plan
66
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MIDAS/GTS Modeling Pre-processing Preliminary 2D model
3D model
Post-processing Vert. displacements after excavation
Stresses in subway lining
Vert. displacements of the shaft
Axial forces in the rock bolts
www.midas-diana.com/gts
67
MIDAS/GTS Program Application [33]
Engineer
Samsung Engineering & Construction Project Overview
Title
Project
Scope
Project Image
Seoul new City Hall
Design for construction
Excavation stability
Overview
Key plan
68
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MIDAS/GTS Modeling Pre-processing Geometry
Mesh
Excavation layers
Columns
www.midas-diana.com/gts
69
MIDAS/GTS Program Application [34]
Hyder Consulting Ltd, UK
Engineer
Project Overview Title Project
Project Image
Dubai Tower, Doha, Qatar Piled-raft foundation design
Analysis results for design:
Scope
- Settlements - Raft forces and bending moments - Pile forces and bending moments
The proposed development for the Dubai Tower project comprises the construction of an approximately eighty floor high rise tower with mezzanine,
Overview ground floor and five basement levels and will be the tallest structure in Qatar when it is complete. The tower is founded on a piled raft. In order to fully understand the behaviour of the foundation, a 3D finite element model is required.
Pile scheme
70
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MIDAS/GTS Modeling Pre-processing Podium and basement levels
Side view, Piles and Basement
Post-processing Quarter cut on settlement results
Bending moments in the raft
Vertical stress in the rock layers
Pile axial forces
www.midas-diana.com/gts
71
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