站桥合一地铁高架车站抗震性能分析

以北京某地铁高架车站为背景,建立了有斜撑与无斜撑站桥合一高架车站的有限元计算模型,分析了高架车站上、下层墩柱在地震作用下的位移响应。结果表明,地震作用下,有斜撑站桥合一高架车站与无斜撑站桥合一高架车站相比,墩柱顶部的竖向位移相差较小,斜撑对站桥合一高架车站竖向抗震作用并不明显;与无斜撑站桥合一高架车站相比,有斜撑站桥合一高架车站上层墩柱的横纵向水平位移响应有大幅降低,车站结构在水平方向上的抗震性能提高较大;有斜撑站桥合一高架车站的结构整体性更好,抗震性能更强,结构形式更合理。

Analysis on Seismic Resistance Performance of Elevated Station with Station and Bridge in One

The results show that under the action of earthquake, comparing an elevated station with diagonal brace and an elevated station without diagonal brace, the differences between vertical displacements of top of piers of the elevated stations with diagonal brace are small and the brace for elevated station for vertical seismic effect is not obviousompared with the elevated station without diagonal brace, transverse and longitudinal horizontal displacement response on its tipper pier for the elevated station with a diagonal brace is greatly reduced, the seismic resistance perfbrmances of the station structure in horizontal direction are greatly improved.