Fa+2现浇箱梁理论伸长值计算

预应力筋理论伸长值计算表钢绞线φj15.24 Ryb=1860MPa Ey=195000Mpa A=140mm2 K=0.0015 u=0.225 控制张拉应力0.75*Ryb=1395MPa 　　张拉工作长度L0=75cmPp=P(1-e-(KL+uθ))/(KL+uθ) 　　　　　　　　　　　　　　　　 ΔL=PpL/(ApEy)钢束L(m)3.421.3966.941.39.191.39.241.396Fa+2施工段4.181.3966.941.39.191.39.241.3961.5251.028θ(rad)0.00000.17440.00000.17440.00000.17440.00000.17440.00000.17440.00000.17440.00000.17440.00000.17440.0000KL+uθ0.00510.04130.01040.04130.00630.04130.000.04130.00630.04130.01040.04130.00630.04130.000.04130.0023e-(KL+uθ)0.99490.95950.960.95950.99370.95950.99370.95950.99370.95950.960.95950.99370.95950.99370.95950.9977P(N)195300.0000194300.67651831.3058184500.6226177028.1639175919.0310168794.1353167724.0112160931.0219159925.1411153448.0139151858.9057145708.4690144795.56311331.1988138050.4003132459.2218Pp(N)194799.9110190338.87931854.23180738.1773.0165172332.0362168258.50611304.1131160427.55601566.2623152652.0812148762.4977145251.5379141843.1768138490.3327135235.5481132308.3330ΔL(mm)24.40359.733147.14739.242227.08518.812326.13258.401824.56368.011138.80617.607022.29327.253221.50916.91537.3666305.2830286.9660258323.599986594%(mm)106%(mm)