钢混组合结构斜拉桥抗震性能研究

为了对一座钢混组合结构斜拉桥在不同塔梁连接刚度下的抗震性能进行研究,利用通用有限元软件M IDAS CIVIL对该斜拉桥建立空间梁格体系模型,并利用反应谱法对其在不同塔梁连接刚度下的地震响应进行计算,得到该斜拉桥在地震力作用下的内力及位移响应,通过对计算结果的对比分析,最后确定该斜拉桥在塔梁部位的连接形式,为该桥设计及今后的工程应用提供参考。

Study on Seismic Performance of Steel-concrete Combined Structure Cable-stayed Bridge

In order to study the seismic performance of a steel-concrete combined structure cable-stayed bridge under the different pylon beam connection rigidities,the current finite element software MIDAS CIVIL is used to set up the spatial beam grid system model for this cable-stayed bridge,and the response spectrum method is used to calculate its earthquake response under the different pylon beam connection rigidities to achieve the inner force and displacement response of this cable-stayed bridge under the earthquake force.After the comparison and analysis of the calculation results,the article finally determines the connection type of this cable-stayed bridge at the pylon and beam,which can be referred for the design of this bridge and the future engineering application.