预制承插式桥墩受力性能研究

预制承插式桥墩具有施工便捷、容许误差大、节点可靠等优势，为推广该装配式桥墩在我国的工程应用，依托某高速改扩建项目，基于ABAQUS有限元计算平台，对工程中采用的承插式连接的预制装配式桥梁进行足尺实体建模。同时，建立相同尺寸的现浇式桥墩有限元模型，对二者进行单调位移加载。数值模拟结果表明，承插式连接与现浇连接受力性能基本相似，具有较好的受力性能，实际工程中可认为其等同现浇连接，具有较大的推广价值。

Study on Mechanical Performance of Prefabricated Socket-type Pier

The prefabricated socket-type pier has the advantages of convenient construction, large allowable error and reliable node. In order to promote the engineering application of this prefabricated pier in China, relying on a expressway reconstruction and extension project and based on ABAQUS finite element calculation platform, the full-scale solid modeling of prefabricated bridge connected by socket and spigot joints in the project is carried out. At the same time, the finite element model of cast-in-place bridge pier with the same size is established. And the monotonic displacement loading is carried out on the both. The numerical simulation results show that the socket-type connection is basically similar to the cast-in-place connection, and has the good mechanical performance. It can be considered as equivalent to the cast-in-place connection in practical projects, and has the great promotion value.