(中信建筑设计研究总院有限公司， 武汉 430014)

摘要: 介绍了萍乡奥体中心游泳馆的设计标准、荷载取值、下部结构体系、屋盖钢结构体系、支座设计及 Y 形柱设计。 对建筑室内空间进行分析，通过多轮结构方案比选，最终钢屋盖主体采用张弦梁与单层网格相结合的结构体系，最大程度保留建筑净高，同时适当地将室内对建筑无影响的框架柱伸至屋面，有效减小屋盖跨度，从而形成 Y形柱、张弦梁及单层网格组合结构方案。 建立钢结构屋盖单体模型及带下部结构的整体模型，对两者在恒活荷载作用下的内力及竖向位移进行了对比分析，结果表明准确模拟支座的约束条件非常重要。 钢结构屋盖跨度较大，对各荷载组合进行线性屈曲分析，并以屈曲因子最小的荷载组合为初始荷载，进行非线性稳定分析，分析结果均满足规范要求。

关键词: 萍乡奥体中心游泳馆； 钢结构屋盖； Y 形柱； 线性屈曲分析； 非线性稳定分析

中图分类号:TU398. 7 文献标志码:A 文章编号:1002￣848X(2022)04￣0063￣06

DOI:10. 19701 / j.jzjg.LS202018

Structural design of natatorium of Pingxiang Olympic Sports Center

XIE Xianyi， LU Hao， QIU Jian

(Citic General Institute of Architectural Design and Research Co.， Ltd.， Wuhan 430014， China)

Abstract:The design standard， load value， substructure system， steel roof structure system， support design and Y￣shapedcolumn design of the natatorium of Pingxiang Olympic Sports Center were introduced. The interior space of the building wereanalyzed， and through multiple rounds of structural scheme comparison and selection， finally steel roof main body adopted astructural system that combines a string beam and a single￣layer grid， which preserves the net height of the building to thegreatest extent. And at the same time， the interior space that the frame column has no impact on the building extend to theroof， and the span of the roof was effectively reduced. Thus a Y￣shaped column， string beam and single￣layer gridcomposite structure was formed. A single steel structure roof model and an overall model with substructure were established，and the internal force and vertical displacement of the two under constant live load were compared and analyzed. The resultsshow that it is very important to accurately simulate the restraint conditions of the support. The steel structure roof has alarge span. Linear buckling analysis was performed on each load combination， and the load combination with the smallestbuckling factor was used as the initial load to perform nonlinear stability analysis. The analysis results all meet therequirements of the code.

Keywords:natatorium of Pingxiang Olympic Sports Center； steel roof structure； Y￣shaped column； linear bucklinganalysis； nonlinear stability analysis

第一作者:谢先义，硕士，高级工程师，一级注册结构工程师，主要从事于高层建筑结构、空间结构研究， Email:xxy10368639@163.com。

[引用本文] 谢先义，鲁浩，邱剑. 萍乡奥体中心游泳馆结构设计[J]. 建筑结构，2022，52(4):63￣68. XIE Xianyi， LU Hao，QIU Jian. Structural design of natatorium of Pingxiang Olympic Sports Center[J]. Building Structure，2022，52(4):63￣68.