轮辐式大跨度张拉结构地震反应分析  

Study on seismic response analysis of ring-shaped long-span tensile structure

作　　者：冼耀强[1,2] 刘伯权[1] 丁江澍[1,3] 

机构地区：[1]长安大学建筑工程学院,陕西西安710064 [2]招商局地产控股股份有限公司,广东佛山528000 [3]佛山市建筑我程质量检测站,广东佛山528000

出　　处：《世界地震工程》2011年第3期126-133,共8页World Earthquake Engineering

基　　金：佛山市科技专项发展基金项目(2007055B)

摘　　要：以世纪莲体育中心大跨度轮辐式张拉索膜结构为研究对象,利用有限元程序ANSYS,分别采用振型分解反应谱法和时程分析方法,计算地震作用下结构的受力性能。研究表明:结构以索膜屋盖竖向振动为主,上压环、下压环及腹杆等均参与了振动,动力特性复杂;地震作用下结构内力和位移较大,不同方向地震作用的危害主次不明显,应同时考虑一维及多维地震组合作用的影响;2种计算方法下,结构的内力和位移变化趋势基本一致,为全面了解结构的动力特性,建议采用时程分析方法。Used the program ANSYS, finite element model of the ring-shape long-span tensile cable-membrane structure in Foshan Century Lotus Stadium is established to investigate its dynamic performance under seismic load- ing. The calculation methods include the response spectrum method and the time-history method. Results indicate that the structure＇ s vibration is mainly vertical vibration. The upper compression ring, the lower compression ring, and the truss web, all the components participate in vibration, and the structure＇ s dynamic characteristics are complex. The structure＇ s internal force and displacement are bigger under the seismic loading, and the harming degree of the seismic loading to the structure is not different if the directions of the earthquake waves are different. So the effects of the waves＇ direction and their combination should be considered. Made a comparison between the two calculation methods, the structure＇ s internal force has a similar trend, and its displacement also. For finding out the structure＇s dynamic characteristics completely, the time-history method should be firstly used.

关 键 词：轮辐式大跨度张拉结构 振型分解反应谱法 时程分析 地震作用 

分 类 号：TU245.2[建筑科学—建筑设计及理论] P315.96[天文地球—地震学]