大矢高脊线式叉筒网壳静力及抗震性能分析

The Static and Seismic Performance Analysis of Ridge-type LICS with Large Vector Height

运用ANSYS软件对大矢高脊线式叉筒网壳结构进行系统的静力性能分析,详细研究了结构跨度S、矢高f、环向区域份数Kn、径向节点圈数nx对结构静力性能的影响;在此基础上对结构进行自振特性分析和地震响应分析。探讨了跨度、矢高对结构基频的影响规律,及结构环向区域份数、径向节点圈数对结构震后最大位移的影响规律。研究结果表明:大矢高脊线式叉筒网壳静力性能良好,矢高对结构静力性能影响不大,环向区域份数、径向节点圈数对结构静力性能影响较复杂;结构自振频率分布和振型有很强的规律性,结构基频对跨度较敏感;结构抗震性能优越,结构环向区域份数对结构震后最大位移影响较大。

Using ANSYS software to analyze the static performance of ridge-type LICS with large vector height, The influence of the structure span S, the height of the structure f, the number of the ring to the region and the number of radial nodes on the static performance of the structure are studied in detail. On this basis, the analysis of the natural vibration characteristics and seismic response of the structure are carried out, and the influence of the span and the height to the fundamental frequency of the structure is discussed. The research results show that：The static performance of ridge-type LICS with large vector height is good, The influence of the rise to the static per-formance of the structure is not much, The effect of the number of the ring and number of radial nodes to the static performance of the structure is complex. The Regularity of Structure natural frequency and vibration mode is strong, Structure base frequency is sensitive to span. The Seismic performance of structure is perfect, The maximum dis-placement of the structure after the earthquake is sensitive to he number of the ring.