茅草街大桥动力特性有限元模拟与分析

Modeling and Analysis of Finite Element of Dynamic Characteristics for Maocaojie Bridge

桥梁结构的动力特性 (固有频率、振型 )是结构动力分析、抗震分析的重要参数 ,是进行谐响应分析、谱分析和瞬态动力学分析的基础。采用 ANSYS有限元软件对茅草街钢管混凝土拱桥的振动频率及振型进行了分析 ,并讨论了主要结构参数对其动力特性的影响 ,为本桥的动力设计提供参考。

The dynamic characteristics (natural frequencies, vibration shapes) for the bridge is the important parameter for the dynamic analysis and the anti-seimic analysis of structure and the basis for harmonic responding analysis, analysis of spectrum and instantaneous dynamics. The ANSYS software is utilized for calculating the vibrating frequencies and vibration shapes and discussing the effect of major structural parameters on dynamic characteristics for the dynamic design of this bridge.