萍乡奥体中心游泳馆结构设计  

Structural design of natatorium of Pingxiang Olympic Sports Center

作　　者：谢先义 鲁浩 邱剑 XIE Xianyi;LU Hao;QIU Jian(Citic General Institute of Architectural Design and Research Co.,Ltd.,Wuhan 430014,China)

机构地区：[1]中信建筑设计研究总院有限公司,武汉430014

出　　处：《建筑结构》2022年第4期63-68,共6页Building Structure

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。The design standard,load value,substructure system,steel roof structure system,support design and Y-shaped column design of the natatorium of Pingxiang Olympic Sports Center were introduced.The interior space of the building were analyzed,and through multiple rounds of structural scheme comparison and selection,finally steel roof main body adopted a structural system that combines a string beam and a single-layer grid,which preserves the net height of the building to the greatest extent.And at the same time,the interior space that the frame column has no impact on the building extend to the roof,and the span of the roof was effectively reduced.Thus a Y-shaped column,string beam and single-layer grid composite 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 results show that it is very important to accurately simulate the restraint conditions of the support.The steel structure roof has a large span.Linear buckling analysis was performed on each load combination,and the load combination with the smallest buckling factor was used as the initial load to perform nonlinear stability analysis.The analysis results all meet the requirements of the code.

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 

分 类 号：TU398.7􀆰[建筑科学—结构工程]