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华敏帝豪大厦塔楼结构方案在综合考虑结构抗震性能、建筑功能及经济性后,外围框架柱和转换斜撑采用矩形钢管混凝土构件。介绍了矩形钢管混凝土结构的计算、构造和节点,着重阐述了钢管混凝土斜撑转换构件的设计和构造,并用有限元程序ANSYS对重要节点进行分析。工程实践表明,矩形钢管混凝土结构承载力高、抗震性能好,可显著减小柱断面,与钢框架梁连接方便。最后介绍了矩形钢管混凝土施工中的重要问题。
Huamin Imperial Tower Building Structure Scheme After considering the structural seismic performance, building function and economy, the outer frame column and the conversion bracing are made of rectangular CFST. The calculation, construction and joints of rectangular CFST structure are introduced. The design and construction of the concrete-filled steel tube slant transition member are emphatically described. The critical nodes are analyzed by the finite element program ANSYS. Engineering practice shows that the rectangular CFST structure has high bearing capacity and good anti-seismic performance, which can significantly reduce the cross-section of the column and facilitate the connection with the steel frame beam. Finally, the important problems in the construction of rectangular CFST are introduced.