30米箱梁张拉伸长量计算程序表

本文格式为Word版，下载可任意编辑——30米箱梁张拉伸长量计算程序表

30m箱梁张拉伸长量计算表带计算程序

池州长江大桥及接线工程05标30米小箱梁预应力张拉计算书由图纸设计可知预制小箱梁采用高强度、低松弛钢绞线，公称直径为15.20mm,截面面积Ay=140mm2,其标准抗拉强度fpk=1860MPa,钢绞线弹性模量为Ey=1.95105MPa,控制张拉应力为0.75fpk=1395MPa,波纹管采用金属粘结波纹管，查表得到孔道偏差系数K=0.0015,管道摩擦系数μ=0.25P1=0.75fpk*AyAy=n*140P均=P(1-e-(kL+μθ))/(kx+μθ)L=从张拉端至计算截面的孔道长度

△L=P均*L/Ay*Ey由图纸计算张拉端至计算截面的孔道长度钢束编号L1L29.96808.36156.75551.06658.18806.62304.99751.0165L3=圆周率/180*切角*半径

L4

L/2

N130米中跨箱梁N2N3N4N130米边跨箱梁N2N3N4

0.650.650.650.650.650.650.650.65

3.9273.9273.9270.7333.9273.9273.9270.733

0.8852.5074.12912.9012.6934.2635.89313.001

15.430015.445515.461515.350515.458015.46315.467515.4005

30m箱梁张拉伸长量计算表带计算程序

30米中跨预应力箱梁张拉伸长量计算表序号线段L1N1L2L3L4合计L1N2L2L3L4合计L1N3L2L3L4合计L1N4L2L3L4合计L(m)0.659.9683.927θ(rad)00k0.00150.0015μ0.250.250.250.250.250.250.250.250.250.250.250.250.250.250.250.25P1(N)781.20781.20769.58748.45781.20781.20771.44750.26781.20781.20773.31752.08781.20781.20779.95774.34P2(N)781.20769.58748.45747.46781.20771.44750.26747.45781.20773.31752.08747.43781.20779.95774.34759.45P(N)781.20775.39759.01747.95781.20776.32760.85748.86781.20777.26762.70749.76781.20780.58777.15766.90Ep(Mpa)195000195000195000195000195000195000195000195000195000195000195000195000195000195000195000195000Ay(mm2)560560560560560560560560560560560560560560560560ΔL(mm)4.65070.77927.2956.062108.7864.65059.44327.36117.192108.6474.65048.08427.42828.349108.5114.6507.6235.21790.602108.092216.1844217.0216217.2939217.5721总伸长

0.0872660.0015

0.88500.001515.4299930.859980.6500.00158.36153.9272.507015.44550.656.75553.9274.12915.46150.651.06650.73312.90115.35050030.89100030.92300030.7010.00150.00150.00150.00150.00150.00150.00150.00150.0872660.0015

0.0872660.0015

0.0244350.0015

30m箱梁张拉伸长量计算表带计算程序

30米边跨预应力箱梁张拉伸长量计算表序号线段L1N1L2L3L4合计L1N2L2L3L4合计L1N3L2L3L4合计L1N4L2L3L4合计L(m)0.658.1883.927θ(rad)00k0.00150.0015μ0.250.250.250.250.250.250.250.250.250.250.250.250.250.250.250.25P1(N)976.50976.50964.56938.08976.50976.50966.83940.29781.20781.20775.36754.07781.20781.20780.01774.40P2(N)976.50964.56938.08934.29976.50966.83940.29934.29781.20775.36754.07747.43781.20780.01774.40759.40P(N)976.50970.53951.32936.18976.50971.67953.56937.29781.20778.28764.72750.75781.20780.60777.20766.90Ep(Mpa)195000195000195000195000

195000195000195000195000195000195000195000195000195000195000195000195000Ay(mm2)700700700700700700700700560560560560560560560560ΔL(mm)4.65058.21727.36918.470108.7064.65047.14527.43329.272108.5014.65035.61827.50040.514108.2824.6507.2665.21791.304108.438216.876216.5646217.0014217.4118备注

0.0872660.0015

2.69300.001515.4579930.915980.6500.00156.6233.9274.26315.46300.654.99753.92700000.00150.00150.00150.00150.0872660.0015

0.0872660.0015

5.89300.001515.4674930.934980.6500.00151.01650.73313.001000.00150.00150.0244350.0015

15.4005430.80108

30m箱梁张拉伸长量计算表带计算程序

30米小箱梁负弯矩张拉伸长量计算表序号N1N2N3线段T1T2T3L(m)3.557.5θ(rad)000k0.00150.00150.0015μ0.250.250.25P1(N)781.20585.90781.20P2(N)781.20585.90781.20P(N)781.20585.90781.20Ep(Mpa)195000195000195000Ay(mm2)560