斜交预应力箱梁钢绞线形状特性及其影响

Steel Strands Shape Parameters of Skew Prestress Box Girder

斜交预应力箱梁位于腹板的钢绞线是三维曲线,若简化为平面曲线进行计算,将使下料长度和竖向弯起角与实际有不可忽略的误差,并影响张拉伸长量的计算结果。文章结合施工实例介绍了斜交箱梁钢绞线长度及弯起转角的计算方法。

Stress strands in webs of skew prestress box girder are three-dimensional curves.lf simplified as plane curves, it is to occur the deviation of length of cables and struts and in bend up angles between theory and practice. Based on construction examples, this paper introduces the calculating method of steel strands length and bend up angle of skew box girder.