预制箱梁钢绞线伸长量计算

钢绞线截面面积钢绞线试样弹性模量底板束张拉锚下控制应力顶板束张拉锚下控制应力管道摩擦系数μ管道偏差系数k平均张拉力钢筋回缩和锚具变形理论伸长量部位孔道长度弯起角θX(m)(rad)3.5056.1092.6161.5744.8875.80400.12217000.12217000.02443000.122170kx+μe-（kx+μθ）计算参数A=140mm2EY=199500Mpaσn=1395Mpaσt=1376Mpa0.200.0025σP=σ(1-e-(kx+μθ))/(kx+μθ)6mm△L=σp×L/Ey(1-e-(kx+μθ))/(kx+μθ)张拉应力σ(Mpa)终点138313281319139013391320139113821346138313281319平均应力138913561324139313651330139313871364138913561324伸长量△L(mm)24.441.5217.36160.5610.9933.4438.69160.247.435.1070.67160.424.0741.5218.01161.2±6%范围(mm)编号起点直线段(1)中 跨 底曲线段(2)板束:N1中间直线段(3)起点直线段(1)中 跨 底曲线段(2)板束:N2中间直线段(3)起点直线段(1)1.065中 跨 底曲线段(2)0.733板束:N3中间直线段(3)10.337起点直线段(1)中 跨 底曲线段(2)板束:N4中间直线段(3)3.4576.1092.714起点0.00876250.9912757780.99563161213950.03970650.9610714720.9804069351383(1)0.00654000.9934813390.9967371561328(1)合计伸长量=((1)+(2)+(3))×2－6mm0.0039350.9960727320.99803506913950.03665150.9640120350.9818961021390(1)0.01451000.9855947620.9927800131339(1)合计伸长量=((1)+(2)+(3))×2－6mm0.00266250.9973410410.99867004613950.00671850.9933040180.9966483591391(1)0.02584250.9744885590.9871893581382(1)合计伸长量=((1)+(2)+(3))×2－6mm0.00864250.9913947390.99569117713950.03970650.9610714720.9804069351383(1)0.0067850.9932379660.996615181328(1)合计伸长量=((1)+(2)+(3))×2－6mm151170151170151170152171X1标预制箱梁钢绞线伸长量计算

钢绞线截面面积钢绞线试样弹性模量底板束张拉锚下控制应力顶板束张拉锚下控制应力管道摩擦系数μ管道偏差系数k平均张拉力钢筋回缩和锚具变形理论伸长量部位孔道长度弯起角θX(m)(rad)kx+μe-（kx+μθ）计算参数A=140mmEY=199500Mpaσn=1395Mpaσt=1376Mpa0.200.0025σP=σ(1-e-(kx+μθ))/(kx+μθ)6mm△L=σp×L/Ey(1-e-(kx+μθ))/(kx+μθ)张拉应力σ(Mpa)终点139013401320139213831347137313481373133813731338平均应力139313651330139413881365137413611374135613741356伸长量△L(mm)±6%范围(mm)2编号起点直线段(1)边 跨 底曲线段(2)板束:N2中间直线段(3)起点直线段(1)边 跨 底曲线段(2)板束:N3中间直线段(3)曲线段(1)直线段(2)曲线段(1)直线段(2)曲线段(1)直线段(2)顶板束T1顶板束T2顶板束T3起点1.55300.00388250.9961250270.99806130013954.8870.122170.03665150.9640120350.9818961021390(1)5.85000.0146250.9854814250.9927230761340(1)合计伸长量=((1)+(2)+(3))×2－6mm0.98800.00247000.9975330470.99876639613950.7330.024430.00671850.9933040180.9966483591392(1)10.48900.02622250.9741183240.9870026121383(1)合计伸长量=((1)+(2)+(3))×2－6mm0.87800.0021950.9978074070.99890341613763.1270.052360.01828950.9818767370.9909107951373(1)合计伸长量=((1)+(2)+(3))×2－6mm0.87800.0021950.9978074070.99890330313766.1270.052360.02578950.9745402080.9872154171373(1)合计伸长量=((1)+(2)+(3))×2－6mm0.87800.0021950.9978074070.99890330313766.1270.052360.02578950.9745402080.9872154171373(1)合计伸长量=((1)+(2)+(3))×2－6mm108433.4415339.00160.566.905.1015271.77161.546.054621.3348.766.058441.6589.46.0541.6589.484173171529595