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

作　　者：王勃 孙凯 虞胡恒 韩宇 石磊 WANG Bo;SUN Kai;YU Huheng;HAN Yu;SHI Lei(MCC(Shanghai)Steel Structure Technology Co.,Ltd.,Shanghai 201908,China)

机构地区：[1]中冶(上海)钢结构科技有限公司,上海201908

出　　处：《建筑施工》2023年第5期872-876,共5页Building Construction

摘　　要：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.

关 键 词：索承桁架 预应力索 分级张拉 施工模拟 有限元分析 

分 类 号：TU755[建筑科学—建筑技术科学]