新型大跨度弦支穹顶结构的动力特性与抗震试验  

Novel Dynamical Feature and Anti-seismic Experiment About the Big Span Suspend-dome Structure

作　　者：王冬梅[1,2] 张爱林[1] 刘学春[1] 

机构地区：[1]北京工业大学建筑工程学院,北京100124 [2]中核集团中国核电工程有限公司,北京100840

出　　处：《北京工业大学学报》2012年第2期194-200,共7页Journal of Beijing University of Technology

基　　金：国家自然科学基金资助项目(50678012);北京市拔尖创新人才资助项目(05004311200601)

摘　　要：弦支穹顶结构是一种新型的预应力钢结构体系,适用于大跨度空间结构的屋盖.为了保证北京奥运会羽毛球馆新型大跨度弦支穹顶结构的抗震性能.利用北京工业大学的九子台阵系统完成了对9.3 m弦支穹顶结构模型的动力特性试验和振动台试验.试验测得模型的多阶自振频率、振型,得到了模型在竖直地震动作用下的加速度、位移、杆件应变、索轴力的响应及响应变化规律.试验结果表明弦支穹顶结构振型密集,在八度大震作用下,具有良好的抗震性能.A suspend-dome structure is a new prestressed steel system,which is suitable for the roof of a big span structure.The experiment study on the anti-seismic performance of the new-type large span suspend-dome of badmiton Gympasiwm for 2008 Olympic Games is a guarantee to a large-scale public building.The dynamic feature and vibration table experiments of a 9.3 m suspend-dome structure model were conducted through the multiple vibration table array system in Beijing University of Technology.Dynamical features of the model were tested.The responses and rules of acceleration,displacement,stress of the structure,and force of cable under the earthquake were obtained.Results show that the structure has closely distributed modes,and has good anti-seismic performance under strong earthquakes at a magnitaude of eight.

关 键 词：大跨度弦支穹顶 动力特性 抗震 

分 类 号：TU393.3[建筑科学—结构工程] TU317