天津慈海桥摩天轮结构的抗震性能分析

Seismic Behavior of Skyscraper Wheel Structure in Tianjin Cihai Bridge

对天津慈海桥摩天轮结构的抗震性能进行了分析,采用振型分解反应谱法和弹性时程分析法分别计算多遇地震下结构的内力和变形,从地震波的加速度谱和功率谱两方面分析了比较结果,将反应谱结果考虑一增大系数后进行结构校核。采用弹塑性时程分析法进行了罕遇地震作用下的分析。分析结果表明,结构的变形和强度均满足要求,抗震性能良好。

The seismic behavior of the skyscraper wheel structure in Tianjin Cihai bridge is studied. Using mode-superposition response spectrum method and elastic time-history analysis method, the internal force and deformation of the structure under frequent earthquake are calculated and compared. The comparing results are researched by acceleration spectrum and power spectrum of earthquake waves, and the results of response spectrum considering a magnifying coefficient are applied to check the structure. The elastoplastie time-history analysis method is usecl to calculate rare earthquake action. The results indicate that the deformation and strength of the structure can satisfy requirements, and it has favorable seismic behavior.