水深对桥梁动力效应的影响分析

Study on Influence of Water Depth to Dynamic Effect of Bridge

结合深水墩连续刚构桥设计,研究水深对桥梁动力效应的影响。以深水墩桥梁的模态分析和谐响应分析为对象,应用ANSYS软件,分别建立桥墩摸型和全桥简化模型,对6种不同水深下的桥墩和全桥结构的自振频率及谐响应进行了数值计算,对计算结果进行对比分析,得到了可供设计和研究借鉴的结论。

The influence of water depth upon dynamic effect of the continuous rigid frame bridge in deep water under designed was studied. The bridge pier model and simplified model were built by Ansys to carry out the modal analysis and harmonic response analysis of deep water bridge. Nature frequencies of bridge piers and the whole bridges of six different water depths were calculated. It arrives at a conclusion on the basis of the contrastive analysis of the calculation results, which is helpful to the bridge design and research.