拱脚开裂对拱桥动力特性的影响

The Effect of Spring Damaging to Dynamic Characteristic of Arched Bridge

桥梁结构的动力特性对桥梁在车辆、地震以及风等动力荷载的作用下的分析中起着极为重要的作用。拱脚开裂破坏是拱桥的一种主要的破损情况,其对拱桥结构的动力特性有着一定的影响,文章以一座大跨度双曲拱桥为例,对由于拱脚支承情况改变所引起的动力特性的变化进行了分析比较。

The dynamic characteristic of bridge playa significant part in analyse of bridge in the dynamic load effect. The damage of spring is one of the most common failures of arched bridge, which tade effects on dynamic characteristic in a certain extent. In this paper, changes of dynamic response cased by support of spring are analysised and compared based on an example of long- span two - way curved arch bridge.