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ELEMNTOS DEL DISEร‘O GEOMETRICO DATOS:

1. Calculo del Radio Mรญnimo y Grado Mรกximo de Curvatura ๐‘…๐‘šรญ๐‘› =

๐‘ฃ2 127.14(๐‘’๐‘šรก๐‘ฅ + ๐‘“)

๐Ÿ

๐‘น๐’Žรญ๐’ =

๐Ÿ๐Ÿ๐Ÿ•(+)

Se seleccionarรก para diseรฑo un R= ๐‘’๐‘šรก๐‘ฅ = 0.08 ( 4-36 SIECA) ๐บ๐‘šรก๐‘ฅ = 145,692.26 โˆ—

(๐‘’๐‘šรก๐‘ฅ + ๐‘“)๐‘ฃ 2 ๐‘ฃ2

๐‘ฎ๐’Žรก๐’™ = ๐Ÿ๐Ÿ’๐Ÿ“, ๐Ÿ”๐Ÿ—๐Ÿ. ๐Ÿ๐Ÿ” โˆ—

(๐’†๐’Žรก๐’™ + ๐’‡)๐’—๐Ÿ ๐’—๐Ÿ

2. Cรกlculo de la superelevaciรณn ๐‘’๐‘šรก๐‘ฅ ๐‘’= (2๐บ๐‘šรก๐‘ฅ โˆ’ ๐บ๐‘๐‘ข๐‘Ÿ๐‘ฃ๐‘Ž )๐บ๐‘๐‘ข๐‘Ÿ๐‘ฃ๐‘Ž ๐บ๐‘šรก๐‘ฅ 2 ๐’†๐’Žรก๐’™ ๐’†= (๐Ÿ๐‘ฎ๐’Žรก๐’™ โˆ’ ๐‘ฎ๐’„๐’–๐’“๐’—๐’‚ )๐‘ฎ๐’„๐’–๐’“๐’—๐’‚ ๐‘ฎ๐’Žรก๐’™ ๐Ÿ

1145.92 ๐‘… 3. Cรกlculo de la longitud de la espiral ๐บ=

๐ฟ๐‘’๐‘š๐‘–๐‘› = ๐‘š. ๐‘Ž. ๐‘’ ( ๐‘๐‘Ž๐‘Ÿ๐‘Ž 2 ๐‘๐‘Ž๐‘Ÿ๐‘Ÿ๐‘–๐‘™๐‘’๐‘ ) ๐‘š = 1.5625๐‘‰ + 75 ๐’Ž = ๐Ÿ. ๐Ÿ“๐Ÿ”๐Ÿ๐Ÿ“๐‘ฝ + ๐Ÿ•๐Ÿ“

๐‘ณ๐’†๐’Ž๐’Š๐’ = ๐’Ž. ๐’‚. ๐’† ( ๐’‘๐’‚๐’“๐’‚ ๐Ÿ ๐’„๐’‚๐’“๐’“๐’Š๐’๐’†๐’”) 4. Cรกlculo de los elementos de la curva. a) Tangente

๐‘‡ = ๐‘‡๐‘ + ๐‘‡๐‘ + ๐พ = ๐พ + (๐‘… + ๐‘ƒ)๐‘ก๐‘Ž๐‘› ๐‘‡๐‘ = ๐‘…๐‘ก๐‘Ž๐‘› ๐‘ƒ=

โˆ† 2

โˆ† 2

๐ฟ๐‘’ 2 ๐ฟ๐‘’ 2 ๐ฟ๐‘’ 4 (1 โˆ’ + ) 24๐‘… 112๐‘… 2 21120๐‘… 4 ๐‘‡๐‘ = ๐‘ƒ๐‘ก๐‘Ž๐‘›

โˆ† 2

๐ฟ๐‘’ ๐ฟ๐‘’ 2 ๐ฟ๐‘’ 4 ๐พ = (1 โˆ’ + ) 2 120๐‘… 2 17280๐‘… 4 ๐‘ป = ๐‘ป๐’„ + ๐‘ป๐’‘ + ๐‘ฒ = ๐‘ฒ + (๐‘น + ๐‘ท)๐’•๐’‚๐’ b) Desarrollo ๐ท = ๐ท๐‘ + ๐ฟ๐‘’ ๐ท๐‘ =

๐œ‹๐‘…โˆ† ๐…๐‘นโˆ† = 180 ๐Ÿ๐Ÿ–๐ŸŽ

๐‘ซ = ๐‘ซ๐’„ + ๐‘ณ๐’† O bien: ๐ท = 2 ๐ฟ๐‘’ + ๐ฟ๐‘ (๐‘Ž๐‘Ÿ๐‘๐‘œ ๐‘๐‘–๐‘Ÿ๐‘๐‘ข๐‘™๐‘Ž๐‘Ÿ) โˆ†= 2๐œƒ๐‘’ + โˆ†๐‘ ๐œƒ๐‘’ =

๐ฟ๐‘’ โˆ— ๐บ ๐‘ณ๐’† โˆ— ๐‘ฎ = 40 ๐Ÿ’๐ŸŽ

โˆ†๐‘ = โˆ† โˆ’ 2๐œƒ๐‘’ โˆ†๐’„ = โˆ† โˆ’ ๐Ÿ๐œฝ๐’† ๐ฟ๐‘ =

๐œ‹๐‘…โˆ†๐’„ 180

๐‘ณ๐’„ =

๐…๐‘นโˆ†๐’„ ๐Ÿ๐Ÿ–๐ŸŽ

c) Externa ๐ธ = ๐ธ๐‘ + ๐ธ๐‘

โˆ† ๐Ÿ

๐‘ฌ = ๐‘ฌ๐’„ + ๐‘ฌ๐’‘ ๐ธ๐‘ = ๐‘…(๐‘ ๐‘’๐‘

โˆ† โˆ’ 1) 2

โˆ† ๐‘ฌ๐’„ = ๐‘น(๐’”๐’†๐’„ โˆ’ ๐Ÿ) ๐Ÿ โˆ† ๐ธ๐‘ = ๐‘(๐‘ ๐‘’๐‘ ) 2 โˆ† ๐‘ฌ๐’‘ = ๐’‘(๐’”๐’†๐’„ ) ๐Ÿ d) Tangente corta (TC) ๐‘‡๐ถ =

๐‘Œ ๐‘ ๐‘’๐‘›๐œƒ๐‘’

๐œƒ๐‘’ =

๐ฟ๐‘’ โˆ— ๐บ 40

๐œฝ๐’† =

๐‘ณ๐’† โˆ— ๐‘ฎ ๐Ÿ’๐ŸŽ

Y= Ordenada a la tangente del SC o CS ๐พ3 ๐พ4 ๐พ8 ๐‘Œ= (1 โˆ’ + ) 6๐‘…๐ฟ๐‘’ 56๐‘… 2 ๐ฟ๐‘’ 2 7040๐ฟ๐‘’ 4 ๐’€=

๐‘ฒ๐Ÿ‘ ๐‘ฒ๐Ÿ’ ๐‘ฒ๐Ÿ– (๐Ÿ โˆ’ + ) ๐Ÿ”๐‘น๐‘ณ๐’† ๐Ÿ“๐Ÿ”๐‘น๐Ÿ ๐‘ณ๐’†๐Ÿ ๐Ÿ•๐ŸŽ๐Ÿ’๐ŸŽ๐‘น๐Ÿ’ ๐‘ณ๐’†๐Ÿ’ ๐พ = ๐‘†๐ถ โˆ’ ๐‘‡๐‘† = ๐ฟ๐‘’ ๐‘ป๐‘ช =

๐’€ ๐’”๐’†๐’๐œฝ๐’†

e) Tangente larga (TL) ๐‘‡๐ฟ = ๐‘‹ โˆ’ ๐‘‡๐ถ๐‘๐‘œ๐‘ ๐œƒ๐‘’ X= Distancia sobre la tangente de SC o CS referida al TS o ST ๐พ4 ๐พ8 ๐‘‹ = ๐พ(1 โˆ’ + ) 40๐‘… 2 ๐ฟ๐‘’ 2 3456๐‘… 4 ๐ฟ๐‘’ 4 ๐‘ฟ = ๐‘ฒ(๐Ÿ โˆ’

๐‘ฒ๐Ÿ’ ๐‘ฒ๐Ÿ– + ) ๐Ÿ’๐ŸŽ๐‘น๐Ÿ ๐‘ณ๐’†๐Ÿ ๐Ÿ‘๐Ÿ’๐Ÿ“๐Ÿ”๐‘น๐Ÿ’ ๐‘ณ๐’†๐Ÿ’

๐‘ป๐‘ณ = ๐‘ฟ โˆ’ ๐‘ป๐‘ช๐’„๐’๐’”๐œฝ๐’†

f) Parรกmetro de la curva espiral (A) ๐ด = โˆš๐‘…๐‘๐ฟ๐‘’ ๐‘จ = โˆš๐‘น๐’„๐‘ณ๐’† 5. Cรกlculo de estacionamiento PI: TS: TS+Le PM: TS+D/2 CS: SC+Dc ST: CS+Le

6. Cรกlculo de la TABLA DE PERALTES Y SOBREANCHOS. Mรฉtodo del desarrollo del peralte por el eje de la vรญa. 6.1. Cรกlculo del valor de N (Tangent Runout).

6.2.

๐‘=

๐ฟ๐‘’ โˆ— ๐‘ ๐‘’๐‘๐‘ข๐‘Ÿ๐‘ฃ๐‘Ž

๐‘ต=

๐‘ณ๐’† โˆ— ๐’ƒ ๐’†๐’„๐’–๐’“๐’—๐’‚

Cรกlculo del SOBREANCHO ๐‘†๐‘Ž = ๐‘› (๐‘… โˆ’ โˆš๐‘… 2 + ๐ฟ2 ) + ๐‘บ๐’‚ = ๐’ (๐‘น โˆ’ โˆš๐‘น๐Ÿ + ๐‘ณ๐Ÿ ) +

๐‘ฃ 10โˆš๐‘… ๐’— ๐Ÿ๐ŸŽโˆš๐‘น

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