宽箱梁双索面斜拉桥横向预拱度设置

Transverse Pre-Camber Setting of Cable-Stayed Bridge with Wide Box and Double Cable Plane

应用有限元分析软件Abaqus对影响钢箱梁横向挠度的多种变量进行分析对比,得出各变量的影响规律。结合实际工程,在箱梁施工时按计算预拱度设置横向预拱度,成桥后横坡度达到设计值,表明设置横向预拱度的方法是正确的,可作为宽箱梁双索面斜拉桥横向预拱度计算的参考。

The finite element analysis software Abaqus is used to analyze and compare the various variables whichinfluence the lateral deflection of steel box girders. The influence law of each variable is obtained. Based on the actual engineering, the transverse pre-camber is set according to the pre-arch degree in the box girder construction. The transverse slope reaches the design value according to the results of the bridge,which shows that the method of setting the transverse pre-camber is correct and can be used as a reference for the calculation of the transverse pre-camber of the cable-stayed bridge with wide box and double cable plane.