长沙国际会议中心大跨钢桁架受力性能分析与设计  

Mechanical behavior analysis and design of large-span steel truss for Changsha International Conference Center

作　　者：高义奇 林超伟 刘红星 方飞虎 吴昀泽 GAO Yiqi;LIN Chaowei;LIU Hongxing;FANG Feihu;WU Yunze(PTI Engineering Design Consultancy Shenzhen Co.,Ltd.,Shenzhen 518031,China;Shenzhen PT Lansn International Architecture Design Co.,Ltd.,Shenzhen 518053,China)

机构地区：[1]柏涛国际工程设计顾问(深圳)有限公司,深圳518031 [2]深圳市柏涛蓝森国际建筑设计有限公司,深圳518053

出　　处：《建筑结构》2023年第4期93-100,共8页Building Structure

摘　　要：从楼盖结构选型、节点设计等方面阐述了长沙国际会议中心75m大跨钢桁架的设计要点,采用有限元模拟方法对竖向荷载下钢桁架极限承载力、楼板刚度及温度作用对钢桁架受力的影响进行了分析,同时对楼盖舒适度评估等设计重难点进行研究。结果表明,通过调整构件安装次序可使桁架构件内力得到合理重分配,局部构件屈服后钢桁架整体仍有较大的承载能力和变形能力,混凝土楼板对钢桁架受力的影响主要限于与楼板直接接触的桁架上弦。大跨楼盖能满足正常使用舒适度要求,相关技术研究成果可供类似工程参考。The design key points of the 75m large-span steel truss for Changsha International Conference Center were described from the aspects of the selection for floor structure and joint design.The finite element simulation method was used to analyze ultimate bearing capacity of steel truss under vertical load,the influence of floor stiffness and temperature on the steel truss mechanical behavior.At the same time,the design of floor comfort evaluation and other important and difficult points were studied.The results show that the internal forces of truss members can be reasonably redistributed by adjusting their installation sequence,the steel truss still have great bearing capacity and deformation capacity after local members yield.The influence of concrete floor on the force of steel truss is mainly limited to the upper chord of truss directly in contact with the floor.The large-span floor can meet the comfort requirements,the research results can be used as reference for similar projects.

关 键 词：长沙国际会议中心 钢桁架 大跨楼盖 极限承载力 楼板刚度 温度作用 楼盖舒适度 

分 类 号：TU391[建筑科学—结构工程] TU973