摘要
成都体育学院综合体育馆项目主体采用现浇混凝土框架结构体系,屋盖大跨度钢结构采用张弦桁架,存在建筑功能复杂、楼板不连续、斜柱、扭转不规则等特点。介绍了项目的结构设计详情,对项目中大跨度钢结构屋盖进行多种结构方案比选,充分考虑建筑外形特点,采用张弦桁架结构实现了建筑结构一体化设计。对大跨度钢结构屋盖进行了线性和非线性稳定分析,结果表明结构稳定性能较好;采用动力方法对大跨度钢屋盖结构进行了防连续性倒塌分析,并对屋盖结构的关键节点进行有限元分析,改善了《钢结构设计标准》(GB 50017—2017)关于销轴节点局部承压的计算方法。采用大直径缓连接预应力技术保证大跨度混凝土结构的安全,同时采用变截面的次梁设计方法解决了支承主梁的剪扭计算超限的难题。
The comprehensive gymnasium of Chengdu Sport University project adopts cast-in-place concrete frame structure system,and the long-span steel structure of the roof adopts prestressed string truss,which has the characteristics of complex architectural function,discontinuous floor,inclined column and irregular torsion.The details of the structural design of this project was introduced,a variety of structural schemes of long-span steel structure roof were compared and selected.Considering the shape characteristics of the architecture fully,the integrated architectural and structural design was realized by using prestressed string truss structure.The linear and nonlinear stability analysis of long-span steel roof was carried out,the results show that the structural stability is good.The anti-collapse analysis of long-span steel roof structure was carried out by using dynamic method,and the finite element analysis of the key joints of the roof structure was carried out,which improves the method of the local pressure calculation of the pin joint in the Standard for design of steel structure(GB 50017—2017).The prestressed technology of large diameter retard-bonded tendons was used to ensure the safety of large span concrete structure,and the problem of overrun of shear torsion calculation of supporting girder was solved by the design method of secondary beam with variable section.
作者
阳升
雷蕾
赵仕兴
何俊
夏静
李志黎
YANG Sheng;LEI Lei;ZHAO Shixing;HE Jun;XIA Jing;LI Zhili(Sichuan Provincial Architectural Design and Research Institute Co.,Ltd.,Chengdu 610095,China;Complex Structure Design and Research Center,Sichuan Provincial Architectural Design and Research Institute Co.,Ltd.,Chengdu 610095,China)
出处
《建筑结构》
北大核心
2023年第7期56-63,共8页
Building Structure
基金
四川华西集团有限公司科研项目(KY202106)
四川省建筑设计研究院有限公司科研项目(KYYN202007)。
关键词
大跨钢结构
张弦桁架
稳定分析
防连续性倒塌
缓连接预应力
long-span steel structure
prestressed string truss
stability analysis
anti-collape analysis
retardbonded prestress
