梅江大桥双薄壁墩连续刚构箱梁结构设计及计算分析

Structural Design and Calculation Analysis of Meijiang Bridge Double-thin-wall Pier Continuous Rigid Frame Girder Bridge

梅江大桥主桥为预应力混凝土双薄壁墩连续刚构箱梁结构,跨径布置为76 m+128 m+76 m。介绍了该桥的结构布置、上下部结构及跨越铁路处的设计情况。给出了静力及抗震计算的主要结果,结果表明梅江大桥桥梁静力工况受力合理,抗震性能较好,对类似工程的工程实践具有一定的参考价值。

The main bridge of Meijiang Bridge is a continuous rigid frame box beam structure with prestressed concrete double-thin-wall piers. The span arrangement is 76 m＋128 m＋76 m. The structure of the bridge,the structure of the upper and lower parts and the design situation across the railway were introduced. The main results of static and seismic calculations are given. The results show that the static behavior of Mei- jiang Bridge is reasonable and the seismic performance is good,which has certain reference value for the engineering practice of similar projects.