摘要
对安徽大学体育馆屋盖张弦网壳结构的动力特性进行了分析,采用时程分析法对改变矢跨比的张弦网壳结构进行水平、竖向地震作用分析。分析结果表明,张弦网壳结构的自振频率密集,结构的低阶整体振型以竖向振动为主,刚性网壳下布置索杆施加初始预应力可以提高结构竖向刚度并由此提高结构基频;结构空间刚度的变化决定结构在不同方向地震作用响应的特点。
Natural vibration properties of a cable-strut-supported shell structure in Anhui University are analyzed.Earthquake responses of the structure with original and small height subjected to horizontal and vertical earthquakes are analyzed by the time history method.Analysed results show that frequencies of the cable-strut-supported shell structure are dense,and the first global modes are almost in the vertical direction.Combining prestressed cable-strut structure with stiff shell can enhance the vertical stiff...
出处
《世界地震工程》
CSCD
北大核心
2008年第4期136-141,共6页
World Earthquake Engineering
关键词
张弦网壳结构
地震响应
动力特性
cable-strut-supported shell structure
earthquake response
dynamic property
