TLCD-偏心基础隔震结构减振控制  

Vibration Control of TLCD-eccentric Base Isolated Structure

作　　者：符川 肖怡凡 李子健 FU Chuan;XIAO Yifang;LI Zijian(School of Civil Engineering,North China University of Technology,Beijing 100144,China)

机构地区：[1]北方工业大学土木工程学院,北京100144

出　　处：《土木工程与管理学报》2022年第2期61-69,共9页Journal of Civil Engineering and Management

基　　金：国家自然科学基金(51608010);北京市教育委员会科技计划一般项目(KM201810009011);北方工业大学毓优人才支持计划项目(107051360019XN134/019);北京市属高校基本科研业务费(110052971921/064)。

摘　　要：为了减小隔震层和上部结构偏心造成的结构扭转破坏,本文对偏心基础隔震结构和调频液柱阻尼器(TLCD)相结合的混合系统进行了研究,采用分部计算方法,分别先建立单层和多层上部结构、隔震层、TLCD运动方程,再建立基础隔震结构方程,得到TLCD–基础隔震结构耦联方程。根据偏心基础隔震结构动力特性合理放置TLCD,利用偏心结构TLCD转化TMD方法初步设计单个TLCD频率和阻尼比,并采用状态空间方程优化多个TLCD参数。编写MATLAB软件对比偏心基础隔震与偏心结构混合控制系统动力响应。通过对某三层偏心基础隔震结构进行数值模拟,四条地震波作用下对偏心隔震结构、TLCD–偏心隔震结构进行了时程分析,得出TLCD–隔震结构比隔震结构能更好地控制各层平移–扭转耦联响应。In order to reduce the torsional damage caused by the eccentricity of the isolation layer and the superstructure,a hybrid system of eccentric base isolation structure and tuned liquid column damper(TLCD)is studied.Firstly,the motion equations of single-storey and multi-storey superstructure,isolation layer and TLCD are established respectively,and then the base isolation structure equation is established.Finally,the motion equation of TLCD-eccentric base isolation structure under earthquake is established by using the partical computing method.TLCD is reasonably placed according to the dynamic characteristics of the isolated structure.The optimal frequency and damping ratio of TLCD are designed according to the method of transforming TLCD-eccentric structure into TMD-eccentric structure.The state space equation is used to optimize the parameters of TLCDs.The dynamic response of TLCD-eccentric base isolation structure and eccentric base isolation structure is compared by MATLAB software.Numerical simulations of a three-storey eccentric base isolated structure indicate the TLCD-isolation structure can more efficiently reduce the translation-torsion coupling response than the isolation structure.

关 键 词：调频液柱阻尼器 调频质量阻尼器 偏心基础隔震 时程分析 混合控制 

分 类 号：TU352.12[建筑科学—结构工程]