大跨屋盖结构风致破坏及加固措施研究  

Study of Wind Induced Destruction and Reinforcement Measures of Large Span Roofs

作　　者：谢杰华 别雪梦 

机构地区：[1]湖北荆房投资开发有限公司,湖北荆州434000 [2]长江大学城市建设学院,湖北荆州434023

出　　处：《长江大学学报（自科版）（上旬）》2015年第2期59-63,5,共5页JOURNAL OF YANGTZE UNIVERSITY (NATURAL SCIENCE EDITION) SCI ＆ ENG

基　　金：湖北省高等学校优秀中青年科技创新团队计划项目(T201303)

摘　　要：大跨屋盖结构广泛应用于体育场馆和航站楼等建筑中,而风荷载是这类结构的重要荷载。与此同时,关于大跨屋盖结构的风致破坏及加固的理论研究还相当薄弱,这已成为制约这种结构类型进一步发展的瓶颈。主要阐述了大跨屋盖结构承受风荷载作用的特点,分析了大跨屋盖结构的风致破坏机理和破坏类型,并以体育场馆中最常用的网架结构屋盖为例讨论了大跨屋盖结构加固措施。结果表明,常用的FRP加固法、套管加固法、粘钢加固法和改变受力体系法等适用于屋盖承重结构加固;抗风夹加固法、压顶加固法和增大截面法等适用于屋面板加固。该研究结果对大跨屋盖结构的设计、施工和后期维护具有重要意义。Large-span roofs are widely used in the construction of sports stadiums,terminal buildings and many other buildings.The wind load is an important load of such structures.At the same time,the theory of wind induced destruction and reinforcement measures of large span roofs is still quite weak,which is the bottleneck restricting the further development of this type of structure.This paper describes the features of wind loading of the large span roofs,analyzes the windinduced destruction mechanism and destruction type of the large span roofs,and discusses their reinforcement measures.The results show that the commonly used FRP reinforcement method,casing reinforcement method,bonded steel reinforcement method and the method for changing the system are used for the reinforcement of load-bearing structure of the roof;and anti-wind clip reinforcement method,top reinforcement method and increasing the cross-section are applicable for roof reinforcement.The summary of this study is important for the design,construction and post-maintenance for largespan roofs.

关 键 词：大跨屋盖 风荷载 破坏类型 加固措施 

分 类 号：TU312.1[建筑科学—结构工程]