Hysteretic Performance of the Rotational Friction Damper and Its Application in Multi-stage Seismic Design

被引：0
|
作者：
Du X.-L. [1 ]
Wang Y.-D. [1 ]
Dong H.-H. [1 ]
Han Q. [1 ]
机构：
[1] Key Laboratory of Urban Security and Disaster Engineering of Ministry of Education, Beijing University of Technology, Beijing
来源：
Zhongguo Gonglu Xuebao/China Journal of Highway and Transport | 2022年 / 36卷 / 07期
基金：
中国国家自然科学基金;
关键词：
bridge engineering; multi-stage seismic; rotational friction damper; seismic resilience; self-centering capability; variable hysteresis behavior;
D O I：
10.19721/j.cnki.1001-7372.2023.07.002
中图分类号：
学科分类号：
摘要：
Aiming to meet the demands of multi-level fortification, this paper proposes a variable hysteresis rotational friction damper (VH-RF). The damper was applied to a bridge pier structure, and its multi-stage seismic performance was investigated. The configuration of the new damper, its working mechanism, and its variable hysteretic principle were discussed. In addition, a simplified analysis model was established. A finite element model of the new damper was established in the ABAQUS software. Based on the simplified mathematical model and finite element model, the hysteretic behavior and corresponding influence law of the damper were systematically studied. A hysteretic behavior model was developed for the new damper in OpenSees to reflect the multi-stage seismic performance of the double-column pier. The results are as follows: © The VH-RF can present different hysteretic behaviors under different deformations. It has a stable energy dissipation capacity under small deformations and great self-centering capability under large deformations. (2) By changing the design parameters of VH-RF, the hysteretic performance of VH-RF can be adjusted. (3) A double-column pier with the VH-RF can provide a staged seismic response, thereby enhancing the seismic resilience of the bridge structure. © 2022 Xi'an Highway University. All rights reserved.
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页码：31 / 46
页数：15
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