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对 1 995年日本阪神地震中地铁车站的破坏现象进行了研究 ,分析了地铁车站的地震破坏机理 ;采用二维子结构分析方法和软件SASSI2 0 0 0 ,分别对水平向和竖向地震动作用下神户大开地铁车站结构的地震反应进行了数值模拟分析。首先采用SHAKE91程序计算自由场土体的动剪切模量和阻尼比 ,在SASSI2 0 0 0中不再考虑土体的非线性 ,在建模时把地铁车站上方的土体作为车站的附属结构。把本文的计算结果与 1 995年阪神地震中该车站的震害进行了详细的对比分析 ,发现本文所得的大开地铁车站地震反应规律与其震害完全吻合 ,本文的计算结果能够合理的解释神户大开地铁车站的各种震害现象。因此 ,本文对地下车站的抗震设计具有一定的参考价值和指导意义
The destruction phenomenon of metro stations in Japan's Hanshin Earthquake in 1995 was studied and the earthquake damage mechanism of metro stations was analyzed. Using the two-dimensional substructure analysis method and software SASSI2000, the horizontal and vertical ground motions Under the Kobe subway station structure under the earthquake response numerical simulation analysis. Firstly, the SHAKE91 program is used to calculate the dynamic shear modulus and damping ratio of the free-field soil. The soil nonlinearity is no longer considered in the SASSI2006. The soil above the subway station is modeled as an ancillary structure of the station . The results of this paper are compared with those of the station in Hanshin in 1995. It is found that the earthquake response law of the station is in good agreement with the earthquake damage. The calculation results of this paper can explain Kobe Wide open metro station of a variety of earthquake damage phenomenon. Therefore, this paper has certain reference value and guiding significance for the seismic design of underground stations