软土地区换乘车站抗震设计分析

Analysis on Anti-seismic Design of Transfer Station in Soft Soil Area

近年来我国地质灾害频发,为保证地铁工程的安全,在结构设计阶段应针对地震工况进行验算分析,尤其对于地质条件较差且结构复杂的车站。本文选取南京软土地区典型的换乘车站为背景,分别采用目前常用的反应位移法、时程分析法对车站抗震工况进行验算对比,并结合静力工况计算进行分析,结果表明:抗震工况下反应位移法与时程分析法计算结果规律接近但计算值有明显差异,车站配筋最终为静力工况计算控制。分析成果可为今后类似工程提供一定的参考。

In the recent years,geological disasters occurred frequently in China.To ensure the safety of subway projects,the seismic conditions should be calculated and analyzed during the structural design stage,especially for poor geological conditions and complex structures stations.This article selects the typical transfer station in the soft soil area of Nanjing as the background,and adopts displacement response method and time history analysis method to calculate and compare the seismic working conditions of the station,combined with the calculation of static working conditions for analysis.The results show that the calculation result regulars of the displacement response method and the time history analysis method under the seismic conditions are similar but the calculated values are obviously different.The station reinforcement is ultimately controlled by the static conditions.The analysis results can provide a certain reference for similar projects in the future.