DYNAMIC ANALYSIS OF CABLE-TRUSS HYBRID STRUCTURES
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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.Abstract: 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.
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