附加调谐质量-颗粒阻尼器复合减振体系的钢框架结构振动台试验研究  

Shaking table test on steel frame structures with combined damping system with TMD and particle damper

作　　者：王宝顺 薛建阳[1,2] 赵怡萌 步延博 WANG Baoshun;XUE Jianyang;ZHAO Yimeng;BU Yanbo(School of Civil Engineering,Xi’an University of Architecture&Technology,Xi’an 710055,China;Key Lab of Structural Engineering and Earthquake Resistance,Ministry of Education(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,陕西西安710055

出　　处：《建筑结构学报》2025年第3期89-101,共13页Journal of Building Structures

基　　金：国家自然科学基金项目(52208315)。

摘　　要：为研究调谐质量阻尼器(tuned mass damper, TMD)与并联式单向单颗粒阻尼器(parallel single-dimensional single particle damper, PSSPD)并联形成的复合减振体系(combined damping system with TMD and PSSPD, CTP)及其布置方案对多层结构减震性能的影响,选取了缩尺比为1/5的3层钢框架结构模型,开展了5条天然地震动下的振动台试验,对比研究CTP及TMD的减震效果。基于试验模型结构质量、自振频率及振型等动力特性,数值模拟TMD及3种CTP布置方案,分析了不同减震方案下模型结构与质量块的位移及加速度响应。试验结果表明:CTP对模型结构动力响应峰值平均减震率可达到16.74%,均方根平均减震率可达到21.90%,其对多层结构减震控制效果良好;CTP对模型结构动力响应均方根的减震效果优于峰值的,阻尼器布置方案会显著影响其减震效果,且颗粒质量按照主体结构第1阶振型分配时其减震效果最佳;相同质量时,CTP比TMD的减震效果更好,具有一定的减震优势,质量块的相对位移幅值更小、更早进入工作状态。提出了附加CTP的多层框架结构力学模型及其数值模拟方法,结果表明,模型结构位移峰值及均方根值的试验值与模拟值的相对误差平均值最大值仅为13.20%,误差控制在可接受范围内。To investigate the effect of a combined damping system,formed by the parallel connection of tuned mass damper(TMD)and parallel single-dimensional single particle damper(PSSPD)(named the combined damping system with TMD and PSSPD,or CTP),and its arrangement scheme on the seismic performance of multi-layer structures,a three story steel frame structure model with a scale ratio of 1/5 was constructed,and shaking table tests were conducted under five natural ground motions.The damping effects of CTP and TMD were compared and analyzed.Based on the dynamic characteristics of the experimental structure model such as mass,natural frequency,and vibration mode,the TMD and three layout schemes of CTP were designed.The displacement and acceleration responses of the structural model and the mass block under different damping schemes were analyzed.The test results indicate that the CTP can achieve the average damping rates of 16.74%and 21.90%for the peak response and the root mean square of the responses,respectively,which demonstrate that CTP has a good damping effect on multi-story structures.The damping effect of CTP on the root mean square of structural dynamic response is better than that on the peak response.The arrangement scheme of CTP significantly affectes its damping effect,and the optimal damping effect is achieved when the particle mass is distributed according to the first-order mode of the primary structure.Under the same mass,CTP has a better damping effect,and the mass block has a smaller amplitude of relative displacement and thus enters the working state earlier,compared with TMD.Meanwhile,a mechanical model for multi-layer frame structures equipped with CTP and its numerical simulation methods were proposed.The results show that the maximum average relative error between the experimental and simulated values of the peak displacement and root mean square value of the model structure is only 13.20%,and the error is controlled within an acceptable range.

关 键 词：结构振动控制 调谐质量阻尼器 颗粒阻尼器 减震机理 数值模拟 减震率 

分 类 号：TU352[建筑科学—结构工程] TU391