九际洋大桥30米预制T梁边跨钢绞线伸长量计算表
钢束编号长度(m)起弯角θ(rad)kl+θμN1直线段9.6230曲线段3.570.11838568直线段1.310曲线段3.3380.1107直线段11.92200.0178832730.017724048合计29.763备注0.01443450.034951420.0019650.03267132732732732730.0321EgAg1-e-(kl+θμ)Pp(KN)ΔL(cm)长度(m)起弯角θ(rad)kl+θμ0.014330820.034347670.0019631193.7229190.547872190.36078190.43625193.508826.7862.4490.9132.2918.37820.816N2EgAg1-e-(kl+θμ)Pp(KN)ΔL(cm)长度(m)起弯角θ(rad)kl+θμ标准强度Ryb=1860Mpa;截面面积A=140mm弹性模量 Ey=1.95×05Mpa管道摩擦系数μ=0.25管道偏差系数K=0.00151/米 控制张拉应力σ=1.95×105Mpa 钢绞线实际伸长量需减去工作长度的伸长量以及夹片回缩量2N3EgAg1-e-(kl+θμ)Pp(KN)ΔL(cm)长度(m)起弯角θ(rad)kl+θμN4EgAg1-ePp(KN)ΔL(cm)
