并联式单向单颗粒阻尼器减震控制的试验与数值模拟研究  

Experimental investigation and numerical simulation on vibration control of a parallel single-dimensional single particle damper

作　　者：王宝顺 薛建阳[1,2] 魏敬徽 刘康[1] Wang Baoshun;Xue Jianyang;Wei Jinghui;Liu Kang(College of Ciril Engineering,Xi'an Unioerniy of Archidecrure&Technology,Xi'an 710055,China;Key Lab of Siructural Engineering and Earthquabe Resistenee,Ministry of Eduroto(XAUAT),Xi'an 710055,China)

机构地区：[1]西安建筑科技大学土木工程学院,陕西西安710055 [2]西安建筑科技大学结构工程与抗震教育部重点实验室,西安710055

出　　处：《土木工程学报》2025年第3期12-22,共11页China Civil Engineering Journal

基　　金：国家自然科学基金(52208315);陕西省重点科技创新团队项目(2019TD-029)。

摘　　要：为研究颗粒阻尼器布置方案对多层结构减震性能的影响,制作了缩尺比为1/5的三层钢框架模型结构,进行了5条天然波下的地震模拟振动台试验,研究并联式单向单颗粒阻尼器(Parallel Single-dimensional Single Particle Damper,PSSPD)的减震控制效果。基于试验获得的模型自振频率、阻尼比等动力特性设计3种PSSPD布置方案,分析不同布置方案下模型结构的试验现象及位移和加速度响应。试验结果表明:PSSPD对结构响应峰值减震率可达到43.43%,均方根减震率可达到38.18%,其对多层结构具有良好的减震控制效果;PSSPD对结构均方根的平均减震效果要优于对峰值的平均减震效果;PSSPD布置方案对其减震效果影响显著,且其减震性能与本身参数、受控结构振动特性、地震动参数之间的耦合关系复杂。最后,建立PSSPD在任意布置方案下受控结构的力学模型,提出其数值分析流程。数值计算结果和试验结果在位移峰值及均方根方面具有良好的吻合度。To investigate the influence of layout schemes of particle damper on the seismic performance of multi-story structures,a three-story steel frame model structure with a scale ratio of 1/5 was manufactured,and the shaking table tests with 5 natural ground motions were conducted.The damping effect of a parallel single-dimensional single particle damper(PSSPD)was studied.Based on the dynamic characteristics of the model including natural frequency and damping ratio obtained from experiments,three layout schemes of PSSPD were designed.The experimental phenomena,displacement,and acceleration responses of the model structure under different layout schemes were analyzed.The experimental results show that PSSPD can achieve the peak damping rate of 43.43%and the root mean square damping rate of 38.18%in terms of structural responses,demonstrating its good damping effect on the multi-story structures.The average damping effect of PSSPD with reference to the root mean square of the structure is better than that on the peak.The layout schemes of PSSPD may significantly affect its damping effect.The coupling relationships between its damping effect and test parameters,controlled structural vibration characteristics or ground motion parameters are complex.Finally,a mechanical model of the controlled structure with PSSPDs in any layout scheme was established,and the corresponding flowchart of numerical analysis process was proposed.The numerical calculation results agree well with the experimental results in terms of displacement peak and root mean square.

关 键 词：结构振动控制 颗粒阻尼器 振动台试验 布置方案 数值模拟 

分 类 号：TU352[建筑科学—结构工程] TU391