Development of steel dampers for bridges to allow large displacement through a vertical free mechanism

作     者：Pan Peng Yan Hong Wang Tao Xu Peizhen Xie Qiang 

作者机构：Key Laboratory of Civil Engineering Safety and Durability of China Education Ministry Department of Civil Engineering Tsinghua University China Shanghai Architectural Design & Research Institute CO.Ltd. Key Laboratory of Earthquake Engineering and Engineering Vibration Institute of Engineering Mechanics China Earthquake Administration School of Civil Engineering Qingdao Technological University Department of Building Engineering Tongji University 

出 版 物：《Earthquake Engineering and Engineering Vibration》 (地震工程与工程振动（英文刊）)

年 卷 期：2014年第13卷第3期

页      面：375-388页

核心收录：

学科分类：081406[工学-桥梁与隧道工程] 08[工学] 0814[工学-土木工程] 082301[工学-道路与铁道工程] 0823[工学-交通运输工程] 

基　　金：Natural Science Foundation of China under Grant Nos.51178250 and 51261120377 Tsinghua University of China under Grant No.2010Z01001 

主　　题：steel damper large deformation bridge cyclic loading numerical simulation 

摘      要：Isolation bearings and dampers are often installed between piers and superstructures to reduce the seismic responses of bridges under large earthquakes. This paper presents a novel steel damper for bridges. The damper employs steel plates as energy dissipation components, and adopts a vertical free mechanism to achieve a large deformation capacity. Quasi-static tests using displacement-controlled cyclic loading and numerical analyses using a finite element program called ABAQUS are conducted to investigate the behavior of the damper, and a design methodology is proposed based on the tests and numerical analyses. Major conclusions obtained from this study are as follows： （1） the new dampers have stable hysteresis behavior under large displacements; （2） finite element analyses are able to simulate the behavior of the damper with satisfactory accuracy; and （3） simplified design methodology of the damper is effective.