（上海建筑设计研究院有限公司， 上海 200031）

［摘要］合肥滨湖国际会展中心二期由一个综合展馆和两个标准展馆组成，其中综合展馆为实现展厅区域的无柱大空间，采用跨度为144m的空间张弦桁架屋盖，是目前国内会展建筑中最大跨度的张弦桁架屋盖之一。介绍了该屋盖结构形式、结构布置、支座设计以及构件截面等基本设计信息，对支座形式进行了比选，给出了结构静力分析结果，同时进行了拉索不松弛验算，最后阐述了屋盖的防倒塌验算方法。结果表明，屋盖结构选型合理，各项指标均满足规范要求。

［关键词］大跨空间结构； 张弦桁架； 预应力； 非线性屈曲； 防倒塌验算

中图分类号：TU323.4, TU391文献标识码：A文章编号：1002-848X(2020)09-0032-05

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Design on large-span roof of general exhibition hall of Hefei Binhu International Exhibition Center Phase 

LIU Hongxin, LI Yaming

（Shanghai Institute of Architectural Design and Research Co., Ltd., Shanghai 200031, China）

Abstract:Hefei Binhu International Exhibition Center Phase Ⅱ consists of one general exhibition hall and two standard exhibition halls. In order to realize the column-free space in the general exhibition hall, the spatial truss string roof structure of a span of 144m is adopted, which is one of the largest span spatial truss string structures of the current exhibition buildings in China. The basic design information of the roof  was introduced, including structural form and arrangement, support design and member section. The support forms were compared and selected, and the structural static analysis results were provided. At the same time, the checking calculation of the cable was carried out, and finally the method for anti-collapse checking calculation of the roof was described. The results show that the roof structural system selection is reasonable, and all indexes meet the requirements of the specification.

Keywords:large-span spatial structure; truss string structure; prestress; non-linear buckling; anti-collapse checking calculation

*上海华建集团课题《大跨度弦支钢-铝组合桁架应用技术研究》（18-1类-0066-结）。

作者简介：刘宏欣，博士，高级工程师，Email:liuhx@isaarchitecture.com。