毕节体育场无内支撑钢屋盖体系设计  

Design on steel roof with no inner support of Bijie Stadium

作　　者：高峰[1] GAO Feng(Shanghai Institute of Architecture Design&Research Co.,Ltd.,Shanghai 200041,China)

机构地区：[1]上海建筑设计研究院有限公司,上海200041

出　　处：《建筑结构》2020年第23期13-17,共5页Building Structure

摘　　要：毕节体育场采用一种无内支撑的空间管桁架体系,屋盖钢结构与下部混凝土看台间未设置竖向支撑,仅通过脚部的38个成品球铰支座铰接支承于下部混凝土柱顶,独自站立。设计中,考虑了屋盖钢结构非坐落于地面引起的地震放大影响,对结构体系进行了考虑初始缺陷的稳定性分析,并对结构中关键节点进行了非线性有限元分析。结果表明,该体系在使用荷载作用下具有足够的承载能力和刚度,并有良好的稳定性能和可靠的节点连接。Space pipe truss with no inner support has been adopted in the construction of Bijie Stadium. The steel roof stands on its own with the help of 38 ball-and-sockets at the bottom, but no vertical brace between the roof and the stands.In the design, the seismic amplification effect caused by the roof steel structure not located on the ground was considered, the stability analysis of the structural system considering the initial defects, and the nonlinear finite element analysis of the key nodes of the structure were carried out. The results suggest that the structure system of the unbraced steel roof applied to Bijie Stadium shows satisfactory carrying capacity and high rigidity at the service loads, as well as favourable stability with reliable joint connections.

关 键 词：毕节体育场 大跨度钢结构 空间管桁架 无内支撑钢屋盖 稳定分析 节点分析 

分 类 号：TU393.3[建筑科学—结构工程]