桥梁摩擦摆式支座参数分析

Parameter Analysis of Bridge Friction Pendulum Bearing

地震是一种突发性的自然灾害现象,造成的经济损失不容忽视。摩擦摆支座是一种良好的减震、隔震装置,其特点是承载力高、造价低、易施工、易维护,且应用广泛。文章以靖远金滩黄河大桥(100+168+100)m为工程依托,根据摩擦摆支座原理,分析了3条地震波作用下不同摩擦系数下摩擦摆支座的减震情况,说明摩擦系数是摩擦支座设计的重要参数,应根据桥墩合理设计摩擦摆式支座参数。

Earthquake is a kind of sudden natural disaster phenomenon,and the economic loss caused by it cannot be ignored.Friction pendulum bearing is a good shock absorption and isolation device,which is characterized by high bearing capacity,low cost,convenient construction,easy maintenance and extensive application.Based on the Jingyuan Jintan Yellow River Bridge(100+168+100)m,according to the principle of friction pendulum bearing,this paper analyzes the vibration reduction of friction pendulum bearing under the action of three seismic waves and different friction coefficients.The results indicate that the friction coefficient is an important parameter of the friction bearing design which should be reasonably designed based on the bridge pier.