天津国家会展中心中央入口大厅结构设计
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(中国建筑科学研究院, 北京 100013)
[摘要]天津国家会展中心采用了大量极具特色的建筑形式,其中央入口大厅造型独特,32个完全相同的树形结构通过屋面连接梁组合而成。根据建筑设计要求,中央入口大厅树形结构柱采用了X形变截面柱,边梁采用了L形箱形构件,树杈采用了箱形构件。介绍了中央入口大厅结构设计的布置与计算分析情况。为减少用钢量,结构设计中采用了较多的薄壁构件;为保证构件的局部稳定性,设计中布置了纵横向加劲肋。由于建筑特殊的造型要求,柱顶节点成为结构的薄弱环节,设计分析时采用了有限元分析,保证节点强度满足规范要求。[关键词]天津国家会展中心; 树形结构; 薄壁构件; 展览中心中图分类号:TU393.3 文献标识码:A 文章编号:1002-848X(2015)13-0052-05
Structure design of central entrance hall in Tianjin National Convention and Exhibition CenterWang Yang, Ma Ming, Zhao Pengfei, Liu Feng, Zhang Gaoming, Zhang Qiang(China Academy of Building Research, Beijing 100013, China)Abstract: Many remarkable architectural forms are used in the design of Tianjin National Convention and Exhibition Center. The central entrance hall has a very unique shape. The central entrance hall is formed by 32 identical tree structures, which are connected to a whole by the roof beams. According to the requirements of the architecture design, the tree structure adopted X-shaped variable section columns, the boundary beam adopted L-shaped box component and the branches adopted box components. The detailed structure layout and the analysis result of central entrance hall were shown. To reduce the steel usage, thinwalled members were used, longitudinal and lateral stiffening ribs were designed to keep the local stability of the members. Due to the special requirement of the buildings, capital joint becomes the weakness of the structure. Finite element analysis was used to confirm the joint bearing capacity can meet the requirements of the code.Keywords:Tianjin National Convention and Exhibition Center; tree structure; thin-walled member; exhibition center
作者简介:王杨,高级工程师,一级注册结构工程师,Email:wangyang@cabr-design.com。