地铁地下结构荷载-结构模型反应谱法抗震性能分析

Analysis on the Seismic Performance of Load-Structure Response Spectrum Method for Metro Underground Structure

结合荷载—结构法和反应谱法各自优点,本文提出了地下结构抗震分析更加高效便捷的荷载—结构模型反应谱法。为证明该方法的有效性,本文以昆明地铁4号线某地下三层岛式车站为例进行抗震分析,结果表明,荷载—结构模型反应谱法计算结果符合地震作用时地下车站受力及变形特点。同时,计算表明该方法也能够用于强震作用下的地下结构安全性分析。

A more efficient and convenient load-structure response spectrum method for seismic analysis of Metro underground structures was proposed when taken the advantages of load-structure method and response spectrum method into account.Additionally,an earthquake-resistant analysis is carried out to prove this method basing on an underground three-story island station of Kunming metro No.4 line.The results illustrates that load-structure response spectrum method is available for internal forces and deformation calculation of Metro underground structure.Furthermore,the calculations shows that the proposed method can also be used for safety analysis under strong earthquakes.