Experimental Investigation on Cyclic Performance of Rotation-Based Metallic Damper

IF 4.6 2区 工程技术 Q1 CONSTRUCTION & BUILDING TECHNOLOGY Structural Control & Health Monitoring Pub Date : 2024-06-27 DOI:10.1155/2024/5768511
Qianqian Li, Jianze Wang, Tao Li, Rui Pu, Jun Xu, Kaoshan Dai
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Abstract

Metallic yielding devices have been widely used for improving seismic performance of buildings. However, metallic dampers currently in use are often attached to structural systems through brace components, potentially causing conflicts with architectural requirements. In this study, a metallic damper that utilizes the angular deformation generated at the beam-column connection under lateral loads is proposed. The seismic input energy can be dissipated through inelastic deformations of hyperbolic-shaped steel bars. Firstly, this paper introduces the configuration and design concept of the newly proposed rotation-based metallic damper (RMD). Then, in order to investigate the hysteretic behavior and failure modes of the proposed devices, a total of twelve RMD specimens were fabricated, and quasistatic tests were conducted. Subsequently, the influences of physical characteristics associated with hyperbolic-shaped steel bars on the energy dissipation performance of RMD were studied. Finally, finite element analysis was conducted based on the detailed models of RMD specimens, and the results showed a good agreement with the experimental data. The results demonstrate that the RMD exhibits a sound energy dissipation capacity. It is replaceable and flexible in architectural arrangements due to its low space requirements, which is friendly in engineering practice.

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基于旋转的金属阻尼器循环性能实验研究
金属屈服装置已被广泛用于改善建筑物的抗震性能。然而,目前使用的金属阻尼器通常是通过支撑部件连接到结构系统上的,可能会与建筑要求产生冲突。本研究提出了一种利用横向荷载作用下梁柱连接处产生的角变形的金属阻尼器。地震输入能量可通过双曲线形钢筋的非弹性变形来消散。本文首先介绍了新提出的基于旋转的金属阻尼器(RMD)的构造和设计理念。然后,为了研究拟议装置的滞后行为和失效模式,共制作了十二个 RMD 试样,并进行了准静态试验。随后,研究了双曲型钢筋的相关物理特性对 RMD 能量耗散性能的影响。最后,根据 RMD 试样的详细模型进行了有限元分析,结果与实验数据吻合良好。结果表明,RMD 具有良好的消能能力。由于其对空间的要求较低,因此在建筑布置上具有可更换性和灵活性,这在工程实践中是非常友好的。
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来源期刊
Structural Control & Health Monitoring
Structural Control & Health Monitoring 工程技术-工程:土木
CiteScore
9.50
自引率
13.00%
发文量
234
审稿时长
8 months
期刊介绍: The Journal Structural Control and Health Monitoring encompasses all theoretical and technological aspects of structural control, structural health monitoring theory and smart materials and structures. The journal focuses on aerospace, civil, infrastructure and mechanical engineering applications. Original contributions based on analytical, computational and experimental methods are solicited in three main areas: monitoring, control, and smart materials and structures, covering subjects such as system identification, health monitoring, health diagnostics, multi-functional materials, signal processing, sensor technology, passive, active and semi active control schemes and implementations, shape memory alloys, piezoelectrics and mechatronics. Also of interest are actuator design, dynamic systems, dynamic stability, artificial intelligence tools, data acquisition, wireless communications, measurements, MEMS/NEMS sensors for local damage detection, optical fibre sensors for health monitoring, remote control of monitoring systems, sensor-logger combinations for mobile applications, corrosion sensors, scour indicators and experimental techniques.
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