大跨度自锚式悬索桥的动力特性分析

Dynamics characteristics analysis of long-span self-anchored suspension bridge

以钱江九桥和青岛海湾桥大沽河航道桥两座自锚式悬索桥为例,用通用有限元软件ANSYS建立了大桥的三维有限元动力计算模型,对大桥进行了静力和动力计算分析,发现存在多阶拉索振动振型并对此现象进行了分析,为大跨度自锚式悬索桥的设计、施工提供了参考。

In this paper, two self-anchored suspension bridges such as Qianjiang ninth bridge and Qingdao bay bridge are taken as example. The FEA program ANSYS is used to build three-dimension FE twin-beam models and calculate the dynamic performance of the bridges. Through static and dynamic analysis we found that there are several modes of cable vibration. It is believed that this research can provide reference for the design and construction of long-span self-anchored suspension bridges.