地铁车站结构抗震设计的分析研究

Research on aseismic design of a subway station

目前轨道交通已成为城市交通运输的重要组成部分,而国内对地铁车站结构抗震设计的重视程度有待提高。结合上海某地铁车站结构的抗震设计案例,发现在地震作用下常规车站的二维模型和三维模型计算结果较为接近,因此常规车站抗震设计可仅进行二维抗震设计分析。另外通过计算发现车站结构中柱在地震作用下的内力明显大于静力荷载作用下的内力,因此必须重视中柱的抗震设计。

As the subway system plays an important role in transportation,the aseismic design of subway station should be paid more attention.Through a case of aseismic design of a subway station in Shanghai,the calculating result comparison of plane model and spatial model is obtained.It is found that the results of two models are nearly the same.The plane model is recommended as preferred method in aseismic design of the subway station.What's more,based on the calculating result,it is found that the internal forces of column in seismic status were significantly greater than those in static status.Therefore,the aseismic design of column is necessary.