以金马大桥为例 ,通过建立空间有限元模型 ,考虑不同的施工程序 ,对斜拉桥中边主梁截面的横梁进行受力分析表明 ,分批张拉预应力筋可以使同一块件的两根横梁的受力更加均匀 ,在恒载作用下 ,距离塔较远处的横梁受力与简支梁相同 Taking Jinma Bridge as an example, through the establishment of the spatial finite element model and considering different construction procedures, the force analysis of the beam in the cross-section of the main girder in the cable-stayed bridge shows that by prestressing the tendons in batches, The root beam load more uniform, under the action of dead load, the beam from the tower far away from the same force and the same beam