黏滞阻尼器参数对框架结构减震效率的影响研究  

Study on the influence of viscous damper parameters on the damping efficiency of frame structure

作　　者：兰香 张兴仙 邵一凡 张龙飞 苏何先[4] 潘文[4] LAN Xiang;ZHANG Xingxian;SHAO Yifan;ZHANG Longfei;SU Hexian;PAN Wen(College of Architecture and Civil Engineering,Kunming University,Kunming 650214,China;Yunnan Open University&Yunnan Vocational&Technical College of National Defense Industry,Kunming 650032,China;Yunnan Zhengyan Isolation Technologies Co.,Ltd.,Kunming 650051,China;Civil Engineering Department,Kunming University of Science and Technology,Kunming 650500,China)

机构地区：[1]昆明学院建筑工程学院,云南昆明650214 [2]云南开放大学&云南国防工业职业技术学院,云南昆明650032 [3]云南震研减震科技有限公司,云南昆明650051 [4]昆明理工大学土木工程系,云南昆明650500

出　　处：《自然灾害学报》2024年第5期176-187,共12页Journal of Natural Disasters

基　　金：云南省科技厅基础研究专项青年项目(202101AU070059);云南省教育厅科学研究基金项目(2022J0596);昆明学院人才引进项目(XJ20210006)。

摘　　要：通过探究框架结构中黏滞阻尼器参数对结构减震效率的影响,进而研究黏滞阻尼器参数的优化问题。以某一框架结构为背景,采用非线性动力时程分析方法建立三维有限元模型,并以附加阻尼比、顶点位移降低率、基底剪力降低率和层间位移利用率等减震指标为研究对象。首先通过敏感性分析研究了不同黏滞阻尼参数对各指标的影响规律;然后基于响应面法拟合黏滞阻尼参数与各指标之间的关系模型,并通过F检验法和判定系数R 2评估拟合效果;最后建立关键减震指标的目标函数进而寻求最优参数。结果表明:传统的敏感性分析法很难综合考虑不同减震效率指标的共同影响;响应面法拟合精度高,可预测性好,可作为优化模型;考虑与黏滞阻尼器参数匹配的支撑构件刚度后,通过实际工程案例的实操证明了最优阻尼参数的可实现性。提出一套简便且易于操作的黏滞阻尼器参数优化设计方法,为框架结构减震设计提供重要指导。By exploring the influence of viscous damper parameters in frame structure on the structural damping efficiency,the optimization problem of viscous damper parameters is studied.A three-dimensional finite element model is created using nonlinear dynamic time-history analysis for a frame structure.Various damping indices,such as additional damping ratio,reduction rate of vertex displacement,reduction rate of base shear force,and utilization rate of inter-layer displacement,are studied.The study begins with a sensitivity analysis to examine the influence of different viscous damping parameters on each index.Next,a response surface method is utilized to establish a relationship model between the viscous damping parameters and the indices.The fitting accuracy of this model is evaluated using the F test and the judgment coefficient R 2.Finally,an objective function for key damping indices is developed,and optimal parameters are determined through optimization techniques.The results demonstrate that the traditional sensitivity analysis method may not comprehensively consider the collective influence of different damping efficiency indices.On the other hand,the response surface method provides high fitting accuracy and good predictability and can serve as an effective optimization model.Moreover,after considering the stiffness of the supporting members matching the parameters of viscous dampers,the feasibility of the optimal damping parameters is proved by the practice of actual engineering cases.A set of simple and easy-to-operate parameter optimization design method of viscous dampers is proposed,which provides important guidance for damping design of frame structures in the future.

关 键 词：消能减震结构 框架结构 黏滞阻尼器参数 减震效率 响应面法 

分 类 号：TU352.1[建筑科学—结构工程] P315.9[天文地球—地震学]