索—拱杂交结构动力反应分析  

DYNAMIC ANALYSIS OF CABLE-TRUSS HYBRID STRUCTURES

作　　者：王宏[1] 郭彦林[1] 崔晓强[1] 

机构地区：[1]清华大学土木工程系,北京100084

出　　处：《工程力学》2003年第1期144-148,共5页Engineering Mechanics

摘　　要：以中山大学风雨球场工程为实例,分析研究了索--拱杂交结构体系的自振特性以及结构的抗风、抗震性能。分析发现结构的自振频率呈密集型分布,结构的风荷载脉动响应十分显著,论述了索--拱杂交结构体系进行结构动力反应分析的重要性,通过分析得到了结构的风振响应系数,为结构设计提供了重要的参考资料。最后进行了结构时域内的地震反应分析,结构表现出良好的抗震性能。This paper presents the dynamic analysis of a cable-truss hybrid structure by employing ANSYS, a finite element analysis package. The dynamic response of a typical cable-truss structure located in Zhuhai City is investigated. The importance of dynamic analysis for cable-truss hybrid structure is discussed. Results indicate that the natural frequencies of the structure concentrate in a small range. This is a very important characteristic of the structure. The wind induced vibration coefficient of the structure is determined, which is very helpful for structural design. It is shown that the wind-induced response is very important for the cable-truss hybrid structure. The seismic analysis is also carried out by step-by-step method in the time domain. The results indicate that the structure has good aseismic performance.

关 键 词：索-拱杂交结构 动力反应 大跨度建筑结构 模态分析 风振反应 地震反应 结构设计 

分 类 号：TU312.1[建筑科学—结构工程]