市政桥梁与地铁车站合建时，为满足2种不同构筑物的结构安全和正常使用需求，保证结构合理受力，对比“低转换梁连接”及“桥墩与车站顶板固结结合部分换填”2种方案，建立三维地层-结构模型并进行计算，对各结构承载能力、变形情况及抗震能力进行分析。研究结果表明，采用“低转换梁连接方案”进行合建存在设计、施工困难，且运营期转换结构有检测、维护需求；采用“桥墩与车站顶板固结结合部分换填方案”进行合建可有效避免此类问题，且车站板、墙、柱等结构受力情况较“低转换梁方案”得到改善，同时方案对车站及桥墩能起到更好的变形控制效果，各结构承载力强度及变形均满足规范要求。

When municipal bridge and metro station are jointly built, the structural safety and normal use of the two different structures must be considered, and the structure can also be reasonably stressed. Two schemes of "connection of low transfer beams" and "bridge pier and station roof consolidation and partial replacement" are compared, and the bearing capacity, deformation and seismic capacity of each structure are analyzed through a threedimensional stratumstructure model. The research results show that it is difficult to design and construct the integrated structure with "low transfer beam connection scheme", and the transfer structure needs to be inspected and maintained during operation period; the integrated structure can be carried out using "bridge pier and station roof consolidation and partial replacement scheme". Such problems are effectively avoided, and the stress of the station slab, wall, column, and other structures is improved compared with the "low transfer beam scheme". The bearing capacity and deformation of each structure meet the requirements.