阻尼装置在桥梁抗震中的应用效果分析

Application Effects Analysis of Damping Device in Bridge Seismic

文章对阻尼防碰撞防落梁装置的工作原理及其工程应用进行了介绍。当不安装和分别安装于2种不同的位置(相邻主梁之间和主梁底部与墩顶之间)时,对主梁与盖梁的位移时程进行分析,结果表明2种阻尼安装位置都能很好地防止相邻两梁的碰撞,但是当阻尼装置安装于相邻两梁之间时,不能起到很好的防落梁效果。

In this paper, the working principle of the damping device that could prevent beam falling and collision, as well as the application in engineering are introduced. The displacement time history of main girder and cover beam without damping device and with damping device installing in two different locations（between adjacent girders, installed and the bottom of the main girder and pier top） are analyzed. Results show that damping device with two installation positions can prevent the collision between two beams effectively, but when the damping device installes between two adjacent beams, it cannot prevent beam falling effectively.