为研究装配式地铁车站结构在地震设防区域可液化场地中的适用性，基于长春地铁双丰站的工程实际，采用有限差分软件FLAC^3D开展可液化地层中装配式地铁车站结构的地震响应分析，并与相应的现浇地铁车站工况的计算结果对比，研究地基孔隙水压力、地铁车站结构的动力反应与上浮特征及装配式地铁车站结构的变形特点等。结果表明：与现浇地下结构计算工况类似，可液化场地中装配式地铁车站计算工况中，场地土孔压比呈现出三阶段：初始缓增阶段、中间急升阶段、最后平缓阶段；地震强度较高时，地下结构对周围土层发生液化具有的明显抑制作用；装配式车站结构的加速度反应小于现浇结构，体现了其在可液化场地中柔性适应地形变形的一面；侧墙与中板连接部位是结构强度控制的重点部位；在输入地震动的强度较低时，结构的竖向位移变化底板不同位置都表现出“起始少量下沉，随后急剧上浮，最后趋于下降”的发展阶段，但随着地震动强度的增加，这一现象逐渐不明显；装配式地铁车站结构在水平地震动作用下的变形更接近剪切型变形；其柔性连接比现浇车站的刚接更易适应较大的竖向相对变形，其抗倾覆的能力更好。

In order to study the applicability of the assembled subway station structure in the liquefiable site of the seismic fortification area, based on the engineering practice of Shuangfeng Station of Changchun Metro, the seismic response analysis of the assembled subway station structure in the liquefiable stratum was carried out by using the finite difference software FLAC^3D. Compared with the calculation results of the corresponding cast-in-place subway station conditions, the pore water pressure of the foundation, the dynamic response and floating characteristics of the subway station structure and the deformation characteristics of the assembled subway station structure were studied. The results show that, similar to the calculation condition of cast-in-place underground structure, in the calculation condition of assembled subway station in liquefiable site, the pore pressure ratio of site soil shows three stages: initial slow increase stage, middle rapid increase stage and final gentle stage. When the seismic intensity is high, the underground structure has a significant inhibitory effect on the liquefaction of the surrounding soil. The acceleration response of the prefabricated station structure is smaller than that of the cast-in-place structure, which reflects its flexible adaptation to the deformation of the terrain in the liquefiable site. The connection between the side wall and the middle plate is the key part of structural strength control. When the intensity of the input ground motion is low, the vertical displacement changes of the structure are manifested at different positions of the bottom plate show the development stage of a small amount of sinking at the beginning, then a sharp rise, and finally a downward trend, but with the increase of the intensity of the ground motion, this phenomenon is gradually not obvious. The deformation of the assembled subway station structure under horizontal ground motion is closer to the shear deformation. Its flexible connection is easier to adapt to the larger vertical relative deformation than the rigid connection of the cast-in-place station, and its anti-overturning ability is better.