天津國家會展中心中央入口大廳結構設計
王楊，馬明，趙鵬飛，劉楓，張高明，張強
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（中國建筑科學研究院， 北京 100013）
［摘要］天津國家會展中心采用了大量極具特色的建筑形式，其中央入口大廳造型獨特，32個完全相同的樹形結構通過屋面連接梁組合而成。根據(jù)建筑設計要求，中央入口大廳樹形結構柱采用了X形變截面柱，邊梁采用了L形箱形構件，樹杈采用了箱形構件。介紹了中央入口大廳結構設計的布置與計算分析情況。為減少用鋼量，結構設計中采用了較多的薄壁構件；為保證構件的局部穩(wěn)定性，設計中布置了縱橫向加勁肋。由于建筑特殊的造型要求，柱頂節(jié)點成為結構的薄弱環(huán)節(jié)，設計分析時采用了有限元分析，保證節(jié)點強度滿足規(guī)范要求。［關鍵詞］天津國家會展中心; 樹形結構; 薄壁構件; 展覽中心中圖分類號：TU393.3 文獻標識碼：A 文章編號：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
作者簡介：王楊，高級工程師，一級注冊結構工程師，Email:wangyang@cabr-design.com。
