中文摘要：

根据南京地铁车站建设的实际背景，以浅埋于深厚软土场地中某个典型的两层双柱三跨的地铁车站结构为研究对象，对考虑SSI效应时地铁车站结构水平向非线性地震反应规律进行了研究。本文中主要探讨了侧向有软土层存在时地铁车站结构的水平向相对位移反应和加速度反应规律。结果表明：车站结构顶、底板之间的最大相对水平位移接近于自由场地对应点间的最大相对水平位移，而车站结构的侧向水平相对位移曲线明显区别于自由场地对应深度范围内两点间的水平相对位移曲线，采用三次多项式能很好地拟合车站接轨的水平相对位移沿侧墙高度的变化曲线，初步给出了各拟合参数用车站结构顶、底板间最低水平相对位移拟合的经验公式；同时，考虑SSI效应时，传递到车站结构基底处的峰值加速度反应明显大于自由场地对应点处的峰值加速度反应。

英文摘要：

According to the construction of subway station in Nanjing City, a representative soft site is selected as the groundwork of subway station structure. By using the ABAQUS finite-element software, the nonlinear dynamic soil-subway station structure interaction （ SSI influence） is modeled by the finite-element method. The displacement and acceleration responses of subway station structure are analyzed respectively. Results prove that the horizontal relative displacement between the top and the bottom of subway station is close to the displacement between the corresponding positions in corresponding free site. However, the horizontal relative displacement curve of the subway station structure is different from that of corresponding positions in corresponding free site. At the same time, by considering the SSI influence, the peak acceleration at the bottom of subway station is significantly greater than that of the corresponding positions in the corresponding free site.