大跨度钢筋混凝土箱形拱桥的模态分析

Modal analysis of large span reinforced concrete box arch bridge

基于工程实例,采用数值模拟方法,并进行特征值分析,对桥梁动力特性展开研究。结果表明:桥梁结构刚度大于计算值,该桥的整体动力特性良好;模型具有较高的仿真效果,其计算结果可为类似桥梁的抗震、抗风设计以及车桥动力相互作用分析等提供参考。

Based on the engineering example, the paper adopts the numerical simulation method and carries out the characteristic value analysisto study the dynamic characteristics of the bridge. The results show that the stiffness of the bridge is greater than the calculated value, and the overalldynamic characteristic of the bridge is good. The model has a high simulation effect, and its calculation results can provide reference forseismic, wind-resistant design and dynamic interaction analysis of bridges.