施工技术 2010年7月 32 CONSTRUCTION TECHNOLOGY 第39卷第7期 巨型桁架体系次结构施工过程力学分析 曾强1，黄川2，程睿，鲍广鉴 (1.重庆大学土木工程学院，重庆400045；2.中冶赛迪工程技术股份有限公司，重庆400013) [摘要]巨型桁架结构主要由巨型柱、巨型斜撑和巨型桁架构成.在巨型桁架结构的修建过程中，巨型斜撑发挥了 特殊的传力卸载作用，与常规竖向结构传力途径存在较大差别.研究钢结构巨型桁架体系次结构的预起拱问题， 以及安装过程中关键构件内力变化过程.利用通用有限元平台编制分析程序，对核心筒超前施工条件下巨型桁架 预起拱的间题进行仿真分析，将仿真计算结果、常规计算和实际测量数据进行比较分析，并对巨型桁架体系次结构 .施工过程的内力变化特点进行深人研究. [关键词]上海环球金融中心；次结构；巨型桁架体系；预拱值；有限元分析 [中图分类号]TU323.4 [文献标识码]A[文章编号]1002-8498(2010)07-0032-03 Substructure Mechanical Analysis of Mega-truss System During Construction Zeng Qiang' Huang Chuan2 Cheng Rui' Bao Guangjian' (1.Department of Civil Engineering Chongging Unisersity Chongging 400045 China; 2.MCC Cisdi Engineering Co.Ld.Chongging 400013 China) Abstract:Mega-truss system is posed of mega-column mega-truss and mega-brace.During the construction process of mega-truss system mega-brace plays a special role to deliver the force paring with general structure.Authors focuse on the substructure pre-arch of mega-truss system and the variation of key-member force during construction.Depending on piling special program on general finite element analysis program platform authors pare the calculation results between numerical analysis considering core building in first construction method and normal structure design analysis method. Furthermore the detail analysis on the member-fore character of the substructure during construction process is given. Key words:Shanghai World Financial Center;substructure;mega-truss system;pre-ar...
巨型桁架体系次结构施工过程力学分析.pdf
