An investigation of damping performance of co-working of viscous and metal dampers in reinforcement engineering

Journal Information

J. Hefei Univ. Tech. (Nat. Sci.), Feb.2024, Vol.47 No.2: 246-251

DOI: 10.3969/j.issn.1003-5060.2024.02.016

Authors

BAI Danyang $ ^{1} $, CHEN Daozheng $ ^{1,2} $, WANG Pengcheng $ ^{1} $

(1. School of Civil and Hydraulic Engineering, Hefei University of Technology, Hefei 230009, China; 2. Key Laboratory of Earthquake Engineering and Engineering Vibration, Institute of Engineering Mechanics, China Earthquake Administration, Harbin 150080, China)

Abstract and Keywords

Abstract: Based on the existing research on viscous dampers and metal dampers, taking the actual reinforcement project of an inpatient and outpatient building in Anhui Province as the research object, this paper puts forward three reinforcement schemes, namely separate arrangement of viscous dampers, separate arrangement of metal dampers and mixed arrangement of viscous and metal dampers. The dynamic time history analysis of each scheme under frequent and rare earthquakes is carried out, and the parameters such as inter-story displacement and maximum acceleration before and after damping are integrated, exploring the advantages and disadvantages of the damping performance of viscous damper and metal damper working together. Finally, based on the cooperative work scheme, the energy dissipation after reinforcement and the hysteretic curve of damper are further analyzed to explore its specific damping effect in practical engineering. The results show that when the two dampers are applied to the reinforcement engineering at the same time, the reasonable mixed arrangement scheme can significantly improve the seismic mitigation effect of the structure, and can make full use of the energy dissipation characteristics of the two dampers to achieve phased energy dissipation, with excellent energy dissipation performance.

Keywords: viscous damper; metal damper; seismic energy dissipation; time history analysis; reinforcement scheme

作者信息

白丹阳 $ ^{1} $，陈道政 $ ^{1,2} $，王鹏程 $ ^{1} $

（1. 合肥工业大学土木与水利工程学院，安徽合肥 230009；2. 中国地震局工程力学研究所地震工程与工程振动重点实验室，黑龙江哈尔滨 150080）

摘要和关键词

摘要: 文章基于现有黏滞阻尼器和金属阻尼器的研究,以安徽某住院门诊楼实际加固项目为研究对象,提出单独布置黏滞阻尼器、单独布置金属阻尼器、混合布置黏滞与金属阻尼器的3种加固方案;开展各方案在多遇和罕遇地震下的动力时程分析,综合减震前后层间位移、最大加速度等参数,研究黏滞阻尼器和金属阻尼器协同工作减震性能的优劣;基于协同工作方案进一步分析加固后的能量耗散情况以及阻尼器滞回曲线,研究其在实际工程中的具体减震效果。结果表明:2种阻尼器同时应用于加固工程时,合理的混合布置方案对结构的减震效果有显著提升,并且可以利用2种阻尼器的耗能特性实现分阶段耗能,耗能表现优异。

关键词: 黏滞阻尼器；金属阻尼器；消能减震；时程分析；加固方案

Funding

中国地震局工程力学研究所基本业务费专项资助项目（2020EEEVL0417）

合肥工业大学学报(自然科学版)

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