【摘要】 以润扬大桥北汊斜拉桥的实际工程为背景,采用Midas Civil 2010有限元软件建立三维计算模型,进行动力特性分析,得出其前十阶的自振频率和相应的振型图。根据桥址场地地震参数,分别采用规范反应谱法和时程分析法对该桥进行地震反应分析,得出主体结构重要截面在地震作用下的内力和位移。更多还原

【Abstract】 Taking the practical project of Runyang Bridge Beicha Cable-stayed Bridge as the background,the article uses Midas Civil 2010 finite element software to set up a 3D calculation model for the dynamic characteristic analysis,and gives the first ten natural frequencies and the relevant vibration diagram.Based on the earthquake parameters of the bridge site,the article analyzes the earthquake response of this bridge separately by the standard response spectrum method and the time history analysis method,and gives the inner force and displacement of the important sections of the main structure under the earthquake action.更多还原