基于Pushover方法的双柱墩高架车站抗震性能分析

以某双柱墩高架车站为研究对象,通过反应谱分析发现结构Y方向的抗倾覆比值系数小于X方向。应用Pushover方法对车站结构Y方向的抗震性能进行分析,结果表明该车站结构满足结构弹塑性的相关要求,结构Y方向超强系数大于2,结构最先在二层柱端产生塑性铰,首层双柱产生塑性铰的时间相对滞后。基于Pushover的分析方法能反映结构弹塑性表现,为设计提供依据。

Analysis on Seismic Performance of Double-column Pier Elevated Station Based on Pushover

Based on a study object of a double-column pier elevated station, it is found that the anti-overturning ratio coefficient in the Y direction of structure is smaller than that in the X direction through the reaction spectrum analysis. The seismic performance in the Y direction of station structure is analyzed by Pushover method. The results show that the structure of this station meets the related requirements of structural elastoplasticity. The super-strength coefficient in the Y direction of structure is greater than 2. The structure first produces the plastic hinge at the end of the second-layer column, and the production time of plastic hinge of the first-layer double column lags relatively. The analytical method based on Pushover can reflect the elastoplastic performance of the structure, which provides a basis for the design.