Abstract An investigation on the dynamic interactions existing in a system consisting of multiple above-ground buildings, soil and a subway station when subjected to ground motions, normally named surface structures–soil–underground structure interaction (SSSI), is presented in this paper. Based on a series of shaking table tests on the seismic response of a system comprising a building, a tunnel and soil, a numerical simulation was conducted. The results were compared with experimental records for verification of the numerical modeling. According to the modeling procedure, the ABAQUS software was further developed and an auto-modeling system creating a multiple above-ground buildings–soil–subway station system rapidly was obtained and enhanced for calculation in time domain. The subroutine of the modified Davidenkov constitutive model was called to consider the nonlinearity of the soft soil in the computational process. The influencing mechanism of the interaction on the seismic response of the subway station was studied using the auto-modeling system. The inter-story drift ratio and peak acceleration were selected to evaluate the dynamic interaction in this complicated system. The influencing factors, including the horizontal distance between the buildings and the subway station, number of the buildings, height of the buildings, and burial depth of the subway station were considered in this study. Numerical results indicate that several key factors such as number of buildings, and burial depth may evidently amplify or attenuate the seismic response of an underground structure.

中文翻译：

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考虑结构-土-结构相互作用的软土地铁站地震响应

摘要 本文研究了由多个地上建筑物、土壤和地铁站组成的系统在受到地面运动时的动态相互作用，通常称为表面结构-土壤-地下结构相互作用（SSSI）。基于对由建筑物、隧道和土壤组成的系统的地震响应的一系列振动台试验，进行了数值模拟。将结果与实验记录进行比较，以验证数值建模。根据建模程序，进一步开发了ABAQUS软件，得到了快速创建多个地上建筑物-土壤-地铁站系统的自动建模系统，并增强了时域计算。调用修正Davidenkov本构模型子程序，在计算过程中考虑软土的非线性。利用自动建模系统研究了相互作用对地铁车站地震反应的影响机制。选择层间漂移比和峰值加速度来评估这个复杂系统中的动态交互。本研究考虑建筑物与地铁站的水平距离、建筑物数量、建筑物高度、地铁站埋深等影响因素。数值结果表明，建筑物数量和埋藏深度等几个关键因素可能会明显放大或减弱地下结构的地震响应。