巴拉嘎尔大桥钢绞线计算
按1/2梁长计算 钢绞线(1)
θ:6.5°=0.11345 K :0.0015 M=0.23 AP=140mm2 EP :181867 R =40m
曲线长:L =θR=0.11345×40=4.538m
直线长L=5.257m+0.4(千斤顶)+0.05(锚板)=5.707m
计算公式:△L =
Pp =
PL PpL (直) △L =(曲) AP *EP AP *EP p {1-e -(kx +u θ)} kx +u θ
计算kx +u θ=0.0015×4.538+0.23×0.11345=0.0329
e-(kx+uθ)=0.9676
P P =
△L 曲=
△L 直=
73.987×2=147.974mm =14.797cm 设计
13.7cm 1395*140*5. 707*1000=41.494(mm ) 140⨯1918671373. 799⨯140⨯4. 538⨯1000=32.493(mm ) 140⨯191867p {1-e -(kx +u θ)}1395⨯(1-0. 9676) 1395⨯0. 0324===1373.799 kx +u θ0. 03290. 032973.987mm
钢绞线计算(2)
θ:6.5°=0.11344 K :0.0015 M=0.23 AP=140mm2 EP :191867 R =35m
L 曲=θR =0.11345×35=3.9708m
L 直=5.8442m+0.4+0.05=6.294m
直线计算公式:△L 直=
Pp =PL PpL 曲线计算公式= AP *EP AP *EP p {1-e -(kx +u θ)} X =L 曲 kx +u θ
计算:kx+uθ=0.03205 e-(kx+uθ)=0.96846
Pp =1395×0.03154/0.03205=1372.8
△L 曲=
△L 直=
(28.411+45.763)×2=148.348mm=14.835cm 设计13.7cm 1372. 8⨯140⨯3. 9708⨯1000=28.411(mm ) 140⨯1918671395⨯140⨯6. 294⨯1000=45.763(mm ) 140⨯191867
中梁20 钢绞线计算(3)
直线长:8.9677+0.4+0.05=9.4177m
曲线长:0.7323m
L =θR =1.4°x ×30m =0.7323m 180
角度:1.4° 换算成弧度为0.02443
K :0.0015 u :0.23 钢绞线截面积:140mm 2 弹性横量EP :191867
计算公式:△L =
曲Pp =PL (直) AP *EP p {1-e -(kx +u θ)} kx +u θ
计算kx+uθ=0.006717 e-(kx+uθ)=0.9933
曲线部 Pp =1395×
△L 曲=
△L 直=
(5.3108+68.473)×2=147.568mm=14.76cm 设计13.7cm 0. 0067=1391.469 0. 0067171391. 469⨯140⨯0. 7323⨯1000=5.3108(mm ) 140⨯1918671395⨯140⨯9. 4177⨯1000=68.473(mm ) 140⨯191867
巴拉嘎尔大桥钢绞线计算
按1/2梁长计算 钢绞线(1)
θ:6.5°=0.11345 K :0.0015 M=0.23 AP=140mm2 EP :181867 R =40m
曲线长:L =θR=0.11345×40=4.538m
直线长L=5.257m+0.4(千斤顶)+0.05(锚板)=5.707m
计算公式:△L =
Pp =
PL PpL (直) △L =(曲) AP *EP AP *EP p {1-e -(kx +u θ)} kx +u θ
计算kx +u θ=0.0015×4.538+0.23×0.11345=0.0329
e-(kx+uθ)=0.9676
P P =
△L 曲=
△L 直=
73.987×2=147.974mm =14.797cm 设计
13.7cm 1395*140*5. 707*1000=41.494(mm ) 140⨯1918671373. 799⨯140⨯4. 538⨯1000=32.493(mm ) 140⨯191867p {1-e -(kx +u θ)}1395⨯(1-0. 9676) 1395⨯0. 0324===1373.799 kx +u θ0. 03290. 032973.987mm
钢绞线计算(2)
θ:6.5°=0.11344 K :0.0015 M=0.23 AP=140mm2 EP :191867 R =35m
L 曲=θR =0.11345×35=3.9708m
L 直=5.8442m+0.4+0.05=6.294m
直线计算公式:△L 直=
Pp =PL PpL 曲线计算公式= AP *EP AP *EP p {1-e -(kx +u θ)} X =L 曲 kx +u θ
计算:kx+uθ=0.03205 e-(kx+uθ)=0.96846
Pp =1395×0.03154/0.03205=1372.8
△L 曲=
△L 直=
(28.411+45.763)×2=148.348mm=14.835cm 设计13.7cm 1372. 8⨯140⨯3. 9708⨯1000=28.411(mm ) 140⨯1918671395⨯140⨯6. 294⨯1000=45.763(mm ) 140⨯191867
中梁20 钢绞线计算(3)
直线长:8.9677+0.4+0.05=9.4177m
曲线长:0.7323m
L =θR =1.4°x ×30m =0.7323m 180
角度:1.4° 换算成弧度为0.02443
K :0.0015 u :0.23 钢绞线截面积:140mm 2 弹性横量EP :191867
计算公式:△L =
曲Pp =PL (直) AP *EP p {1-e -(kx +u θ)} kx +u θ
计算kx+uθ=0.006717 e-(kx+uθ)=0.9933
曲线部 Pp =1395×
△L 曲=
△L 直=
(5.3108+68.473)×2=147.568mm=14.76cm 设计13.7cm 0. 0067=1391.469 0. 0067171391. 469⨯140⨯0. 7323⨯1000=5.3108(mm ) 140⨯1918671395⨯140⨯9. 4177⨯1000=68.473(mm ) 140⨯191867