地震带桥梁铰结阻尼器的设计

Design of Seismic Cable Hinge Restrainers for Bridges

处于地震带的多跨桥梁 ,会由于铰结支座宽度不足而毁坏 ,铰结阻尼器能有效削减构架间的相应位移 ,减少灾害发生。本文具体介绍了基于线性模型的新的铰结阻尼器设计基本原理及方法 ,对大多数桥梁设计提供了相应的铰位移和设计规范。

The collapse of bridges due to unseating at intermediate(in-span) hinges during recent earthquakes emphasizes the need to provide an edequate number of restrainers to limit the relative displacement between frames in a bridge with inadequate hinge seat width.A new design procedure for hinge restrainers,based on a linearized model,is developed.