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重庆国际博览中心多功能厅结构设计
卫东,倪烽,周文源,位立强,单瑞增
摘 要

(北京市建筑设计研究院有限公司, 北京 100045)

[摘要]重庆国际博览中心多功能厅总建筑面积为8万m2,平面尺寸为216m×261m的矩形。中央大厅钢屋盖采用双向正交平面桁架体系,结构跨度为117m。详细介绍了结构体系和项目特点;针对超长结构进行了温度应力分析;通过多点多维时程分析,研究了行波效应对大跨钢结构及周边混凝土竖向构件的影响;对钢屋盖进行了中震弹性验算、抗连续性倒塌验算,并对主桁架关键相贯节点进行了应力分析,确保了屋盖结构的整体安全。

[关键词]重庆国际博览中心; 大跨钢结构; 超长结构; 多点多维时程分析; 抗连续性倒塌

中图分类号:TU973-13, TU351文献标识码:A文章编号:1002-848X(2017)18-0037-04

 

Structural design of multifunctional hall in Chongqing International Exhibition Center

Wei Dong, Ni Feng, Zhou Wenyuan, Wei Liqiang, Shan Ruizeng

(Beijing Institute of Architectural Design, Beijing 100045, China)

Abstract:The multifunctional hall in Chongqing International Exhibition Center covers a total floor area of 80 000 m2 and a rectangular plane of 216m×261m. The steel structure roof of the central hall consists of two-way orthogonal planar truss system with span of 117m. The structural system and project features were introduced in detail. The temperature stress in the super-long concrete structure was analyzed. The influence of traveling wave effect on the super-long steel structure and surrounding vertical concrete members was studied by multi-point and multi-dimensional time-history analysis. Elastic checking calculation and resistance to progressive collapse were conducted on the steel roof under fortification earthquake. The finite element stress analysis was done on the key intersecting joints of the main truss to ensure the whole roof structure safe.

Keywords:Chongqing International Exhibition Center; large-span steel structure; super-long structure; multi-point and multi-dimensional time-history analysis; resistance to progressive collapse

 

作者简介:卫东,博士,教授级高级工程师,副总工程师,Email:weidong@biad.com.cn。

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