Study on the Earthquake Response of Subway Station Built in Soft Sites with Different Thickness of Soft Soil Layers

Abstract eng:
To research how the thickness of the soft soil layer to affect the earthquake response of subway station, the finite-element method is used to model the nonlinear soil-subway station dynamic interaction when nine soft sites with different thickness of soft soil layers are used as the engineering site of subway station respectively. By the research results given in this paper and others given by author before, it is disadvantageous to the earthquake resistant of subway station when the soft soil layers locate in the lateral foundation of subway station, and it is especially disadvantageous when the soft soil layers are locating in the bottom of lateral foundation of subway station. However, it is advantageous to the earthquake resistant of subway station when the soft soil layers are locating under the foundation. When the soft soil layers are lying in the top of lateral foundation, it is more disadvantageous to the earthquake resistant of subway station with the thickness of soft soil layers becoming larger. However, when the soft soil layers lie in the bottom of lateral foundation or under the foundation of subway station, the thickness of soft soil layer has not accordant effect on the earthquake resistant of subway station.

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