摘要
黏滞阻尼器是各类工程结构中常用的消能减震装置。为研究不同参数组合下黏滞阻尼器的消能减震性能,通过调整阻尼器的速度指数和阻尼系数,开展不同黏滞阻尼器减震单层框架实时混合试验数值模拟,通过框架横向位移峰值和稳态振动下位移峰值与滞回耗能能力对阻尼器进行评估。结果表明,随着阻尼器速度指数增大,框架横向位移峰值与稳态振动下位移峰值持续增大,滞回耗能能力持续降低;随着阻尼器阻尼系数增大,框架横向位移峰值先减后增,稳态振动下位移峰值持续减小,滞回耗能能力持续提高。建议当前算例下黏滞阻尼器的速度指数和阻尼器与框架阻尼之比的取值范围分别为0.1~0.3和1.2~1.4。该研究可为黏滞阻尼器的设计与应用提供参考。
Viscous dampers are commonly used as energy dissipation devices in various engineering structures.In order to study the energy dissipation performance of viscous dampers under different parameter combinations,real-time hybrid testing numerical simulations of single story frame with different viscous dampers were carried out by adjusting the velocity index and damping coefficient of the dampers.The dampers were evaluated by the peak value of lateral displacement of the frame,the peak value of displacement under steady-state vibration and the hysteretic energy dissipation capacity.The results show that with the increase of damper velocity index,the peak value of lateral displacement and the peak value of displacement under steady-state vibration of the frame continue to increase,and the hysteretic energy dissipation capacity continues to decrease.With the increase of damper damping coefficient,the peak value of lateral displacement of the frame first decreases and then increases,the peak value of displacement under steady-state vibration continues to decrease,and the hysteretic energy dissipation capacity continues to improve.It is suggested that the velocity index of viscous damper and the ratio of damper to frame damping in the current case should be 0.1~0.3 and 1.2~1.4,respectively.This study can provide reference for the design and application of viscous dampers.
作者
郑欢
王涛
张佳辉
ZHENG Huan;WANG Tao;ZHANG Jiahui(Construction Institute,Guangdong Technology College,Zhaoqing Guangdong 526100,China;School of Architecture&Engineering,Heilongjiang University of Science&Technology,Harbin 150022,China)
出处
《佳木斯大学学报（自然科学版）》
CAS
2024年第4期93-96,共4页
Journal of Jiamusi University：Natural Science Edition
基金
国家自然科学基金项目(52278173)。
关键词
黏滞阻尼器
实时混合试验
滞回曲线
稳态振动
viscous damper
real-time hybrid testing
hysteretic curve
steady-state vibration
