弦支穹顶结构的抗震性能研究  

Seismic behaviors of suspen-dome structure

作　　者：崔晓强[1] 郭彦林[2] 

机构地区：[1]同济大学土木工程学院,上海200092 [2]清华大学土木工程系,北京100084

出　　处：《地震工程与工程振动》2005年第1期67-75,共9页Earthquake Engineering and Engineering Dynamics

基　　金：中国博士后基金项目(2003034275);上海市青年科技启明星计划项目(QMX1469)

摘　　要：弦支穹顶是一种受力性能优良的结构体系,它综合了单层网壳结构和索穹顶结构的优点,详细分析了影响弦支穹顶结构自振特性的各类参数,指出了边界条件对结构抗震性能的决定性影响。研究表明:当采用径向滑动边界时,即边界节点竖向和法向受到约束而容许径向在水平面滑动时,局部布索的弦支穹顶具有较佳的抗震性能;当边界条件相同时,弦支穹顶在水平地震和竖向地震作用下反应相似,只是程度上不同。As a new type of structural form, the suspen-dome structure combines both benefits of a single layer reticulated shell structure and a cable-dome structure. The parameters influencing the free vibration behavior of suspen-dome structure are also investigated theoretically. According to the time history analysis results, it is pointed out that the boundary condition is the main influence factor of the seismic behavior. The results obtained demonstrate that the partial suspen-dome structures show good seismic behavior when the boundary joints are only fixed in vertical and tangential directions. When the boundary conditions are the same,the supspen-dome structures have the similar seismic response in different level under horizontal earthquake action and vertical earthquake action.

关 键 词：弦支穹顶 自振特性 抗震性能 

分 类 号：P315.95[天文地球—地震学]