淮河公路大桥地震反应分析

Analysis of Earthquake Response on Huaihe River Highway Bridge

以蚌埠市大庆路淮河公路大桥为工程背景,基于反应谱及时程分析理论,采用数值模拟的方法对该桥的抗震性能进行了深入的研究。本文的研究思路为:利用ANSYS建立整桥模型,并对其自振特性进行分析;运用反应谱分析方法及时程分析方法分别对该桥进行地震动力响应分析,提取各关键截面的位移峰值,判断该大桥的危险截面,并结合相关规范对比了以上分析方法的计算结果。

According to the engineering background of highway bridge crossing Huaihe River in Daqing Road of Bengbu City and based on the response spectrum and the time history analysis theory, the numerical simulation method is used to further study the anti-seismic performance of this bridge. The study idea of the article is to use ANSYS to establish the whole bridge model and to analyze its natural vibration characteristic.The response spectrum analysis method and time history analysis method are separately used to carry out the earthquake dynamic response analysis, to take the displacement peak value of each key section, and to judge the danger section of this bridge. The calculation results of the above analysis methods are compared by the relative standards.