摩擦耗能器在桥梁减隔震中的有效性分析

桥梁工程作为生命线工程之一。在地震中的破坏会造成震后救灾工作的巨大困难,使次生灾害加重。采取有效抗震措施是减轻桥梁震害的主要方法。通过把"钢筋混凝土支撑钢板-橡胶摩擦耗能"装置引入到桥梁结构当中,以有效地缓解地震带来的各种损失。对钢板-橡胶摩擦耗能器与板式橡胶支座和滑板橡胶支座的组合分别进行时程分析,通过计算来验证在桥梁结构中应用这种组合后的减隔震效果。特别是在脉冲地震波作用下、桥墩较高时以及在三、四类场地上的减隔震效果尤为明显。

The Effectiveness of Friction Energy Dissipation Damper Used in Bridge's Seismic Isolation

Abstract: The damage in the earthquake of bridge project, as one of the lifeline engineering, will make the disaster-relief work after earthquake difficult and enhance the secondary disasters. Taking effective seismic measures is the main method to reduce the damage of bridge in earthquakes. The Purpose of this paper is to introduce the " reinforced concrete support steel plate-rubber friction energy dissipation" devices into the bridge project to effectively relief variety of losses caused by earthquake. This paper will respectively perform finite element analysis to the steel plate - rubber friction energy dissipation device and the combination of laminated rubber bearings and sliding plate rubber bearings. Use the calculating results to verify the reducing and isolating effect of the bridge structure with the application of this combination of isolation. The effect of reduction and isolation is especially effective when the bridge is under the action of pulse seismic waves or its pier is high or it is in three, four sites.