大型索承桁架预应力斜拉索施工过程分析

Analysisof Construction Process of Large-scale Cable-supported Truss Prestressed Stay Cable

以上海某全球创新园区项目为背景,采用有限元方法确定了索承桁架张拉终态的索力设计值,通过倒拆法分析了分级张拉对索力和结构位移的影响,并验证了分批分级张拉方法的适用性,以期为实际施工提供指导。

Taking the project of a global innovation park in Shanghai as the background,the finite element method is used to determine the cable force design value of the final state of cable-supported truss tensioning,and the influence of graded tensioning on cable force and structural displacement is analyzed by the inverted method,and the applicability of batch-graded tensioning method is verified,so as to provide guidance for the actual construction.