天津市地铁3号线解放桥站--天津站站盾构区间穿越京津城际客运专线为我国首例已实施的盾构穿越高速铁路路基段工程，通过使用ANSYS软件，建立地层-结构三维实体模型，模拟盾构穿越客运专线的过程，分析盾构穿越期间轨道沉降及横移变形规律，将数值分析与实际测试结果进行对比分析，表明在无轨道加固、车辆限速措施的条件下，采用严格控制施工参数的措施可以保证高速铁路的正常运营。

Shield tunneling between Jiefangqiao station and Tianjin subway station of Tianjin subway Line 3 under-crossed a high-speed railway. Finite element software ANSYS was used to build the three-dimensional model of soil and structure to simulate the construction process of this project and then to analyse the regularity of track settlements and lateral deformations during construction. The results of numerical simulation were compared with the in-situ measured data which demonstrated that without track reinforcement measures and train deceleration measures, strict control of construction parameters could ensure the safe operation of the railway.