预应力张拉油表读数
分段X(mm)θ(rad)kx+u θe -(kx+u θ)起点力Pq 终点力Pz 135000.00050.99951900921900922218000.00330.9967190092189781.536400.0320.0010.999189781.538189689.742777.500.00420.9958189689.713189295.1伸长量
分段X(mm)θ(rad)kx+u θe -(kx+u θ)起点力Pq 终点力Pz 135000.00050.99951900921900922119400.00180.9982190092189921.9311130.18550.00170.9983189921.874189759463700.0010.999189838.297189747.6511130.18550.00170.9983189747.631189584.96154100.00230.9977189584.933189366伸长量
盖梁伸长量计算表(17#/18#桥墩盖梁)
根据施工规范及设计图纸说明,孔道摩擦系数取值:k=0.0015,u=0.25,
为0.73fpk N1、N3钢绞线
N2、N4、N5钢绞线
)
0.25,张拉端锚下控制应力
PpΔLΔL=Pp*L/Ap*Ep 190092 2.437076923Pp=P*(1-e-(kx+uθ)/(kx+uθ) 189936.815.16711196θ(rad)=2π*θ(°)/360 189735.6 4.44801467X=R*θ(rad)
189492.419.2789443Ep=1.95*105MPa
82.66229571
PpΔL
190092 2.437076923
190006.98.310193513
189840.57.739649124
189793 4.4285025
189666.37.732548414
189475.510.69529981
82.68654056