预应力空间钢桁架结构吊挂承载力研究  

Research of Hanging Capacity of Prestressed Spatial Steel Truss Structures

作　　者：张伟[1] 周元 丁志胜[3] 谢官模[1] ZHANG Wei;ZHOU Yuan;DING Zhisheng;XIE Guanmo(School of Science, Wuhan University of Technology, Wuhan 430070, China;China MCC5 Group Corp. I.td. , Chengdu 610063, China;Department of Structural Engineering, Hubei Water Resources Technical College,Wuhan 430070, China)

机构地区：[1]武汉理工大学理学院,武汉430070 [2]中国五冶集团有限公司,成都610063 [3]湖北水利水电职业技术学院建筑工程系,武汉430070

出　　处：《建筑钢结构进展》2018年第3期104-109,116,共7页Progress in Steel Building Structures

基　　金：中央高校基本科研业务费专项资金(2016IB002)

摘　　要：大跨度空间结构类建筑往往人群密集,一旦出现事故必然造成重大安全责任事故,极大地危害人民生命财产安全,对此类建筑承载力的研究有助于避免安全事故的发生。以成都世纪城新国际会展中心为工程背景,考虑展馆参展期间主桁架下弦节点吊挂重物的实际情况,通过有限元仿真计算给出了展馆主桁架下弦节点吊挂承载力及合理吊挂方案,现场吊挂荷载试验验证了理论分析计算的正确性。以理论分析与现场试验相结合的方式,提出了展馆屋面主桁架吊挂承载方案,能为同类型结构运营使用期的承载力确定提供参考。Large span spatial structures are often built in downtown area. Once an accident occurs, there will be significant safety issues. Research on the hanging capacity of these structures is helpful to avoid the occurrence of accidents. The actual hanged mass under bottom chord nodes of Chengdu New International Convention and Exhibition Center is used as an example. The hanging capacity of steel truss at bottom chord nodes and rational hanging scheme is calculated using FEM simulation,and on site hanging experiments are conducted to validate the theoretical calculation. By combining FEM calculation and hanging experiments, suggestions on hanging steel truss are proposed to guide exhibitors. This paper can be used as references for the bearing capacity of similar structures during service.

关 键 词：空间结构 预应力钢桁架 吊挂承载力 有限元仿真 现场试验 

分 类 号：TU317[建筑科学—结构工程]