拱形连续梁桥抗震性能分析

Analysis on Anti-seismic Property of Arched Continuous Beam Bridge

拱形连续梁桥上部结构呈拱形,造型优美,且与该项目所处景区景观协调一致、相得益彰;然而拱形连续梁桥质量分布具有"头重脚轻"的现象,不利于抗震设防,需对其进行抗震计算分析。以一座拱形连续梁桥为例,对其结构动力特性进行了分析,采用反应谱法计算其地震响应,并进行了抗震性能验算。计算思路、方法可为类似桥梁的抗震设计计算提供参考和借鉴。

The superstructure of arched continuous beam bridge is arched with the appealing design, and is coordinated and complements each other with the landscape in the scenic area of this project. However, the quality distribution of arched continuous beam bridge has the phenomenon of "front heaviness", which goes against the seismic fortification. It is necessary to carry out its anti-seismic calculation and analysis. Taking an arched continuous beam bridge as an example, the article analyzes its structural dynamic property. The response spectrum method is used to calculate its earthquake response and to check the anti-seismic property. The calculation idea and method can be referred for the anti-seismic design and calculation of the similar bridges.