Cau Kien Dam Cot

Tính toán cốt thép cho dầm Ra (kG/cm2) Rn (kG/cm2)

3600 155

αo

0.55

M (Tm) b (cm) h (cm) t (cm) ho (cm) A γ

41 30 80 5 75 0.157 0.914

Fa (cm2)

16.61

m

Tính toán cốt thép cho cột lệch tâm xiên fc (kG/cm2) fy (kG/cm2) ax (cm) ay (cm) lo (cm) t (cm) tg(a1) N (T) Mx (Tm) My (Tm) tg(a) Ac (cm2 As-gt (cm2) M1 (Tm) M2 (Tm) h (cm) b (cm) d1 (cm) d2 (cm) Nu (kG) Na (kG) K β a n m M* (Tm) M eo ϕ s γ

320 4000 90 90 320 5 1.0000 1005 30 8 0.2667 8100 62.24 30 8 90 90 85 85 1382995.2 612000 0.4903 0.0071 0.3127 0.3877 0.5447 33.14 37.50 3.73 0.0415 0.4562 1.0683

As1 12.2710

As2 -23.5121

As3 34.4908

n m m-ns

0 1 0.5347

0.05 0.94 0.5347

As (cm2)

12.27

0.1 0.88 0.5347

0.15 0.82 0.5823

0.2 0.77 0.5447

0.3 0.65 0.5447

tâm xiên

0.4 0.53 0.5435

0.5 0.42 0.5547

0.6 0.3

Tính toán cốt thép cho cột lệch tâm xiên Rb (kG/cm2) Rs (kG/cm2)

145 3650

N (T) Mx (Tm)

90.46 74.27

ξr

0.56

My (Tm)

16.29

t (cm) eax eay M1 (Tm) M2 (Tm) h (cm) b (cm) ho Z ea x1 mo M (Tm) eo (cm)

5 4.4 2.8 74.27 16.29 110 70 105 100 5.0 8.9 0.95 98.56 113.9

Cx (cm) Cy (cm) l (cm)

110 70 320

λx

7.05

λy λ ε ξr*ho

59.12

γe ϕ ϕe Ast1 (cm2)

Ast (cm2)

Lệch tâm lớn

Mx/Cx My/Cy

0.68 0.23

11.09

ix (cm)

31.8

11.09

iy (cm)

20.2

-0.55

εo

0.95

1.00

x

60.1

1.00

e

163.9

-332.85

Ast2 (cm2)

-211.59

1.08

Ast3 (cm2)

tâm xiên 39.27

39.27