摘要
针对偏心结构,研究在地震激励下,扭转调频液柱阻尼器(TTLCD)系统优化参数和对结构减振控制的模拟。首先通过比较TTLCD-结构体系和TTMD-结构体系的耦联微分方程,可将TTLCD-结构体系转化为TTMD-结构体系,从而得到TTLCD-主结构与TTMD-主结构质量比、频率比、主结构自振频率和主结构阻尼等,利用Ikeda公式对TTLCD阻尼比和频率比参数优化,并用有限元软件来对复杂结构减振控制进行数值计算。通过单层偏心结构和4层偏心放置单个或多个TTLCDs为例,用Ikeda公式求得TTLCDs参数,并用SAP2000进行结构分析,同时与MATLAB结果进行对比,验证了该方法的合理性和可行性。
The optimal parameters of torsional tuned liquid column damper （TTLCD） and numerical simulation on vibration control of an eccentric structure under earthquake load were investigated. By comparing the coupled differential equations of a TTLCD-structure and a TTMD （torsional tuned mass damper）-structure, the TTLCD-structure system could be transformed to a TTMD-structure system. The mass ratio, the optimal frequency ratio, the natural frequency, and damping of the main structure were obtained. Modal tuning of the TTLCD （frequency ratio and damping） was classically done by applying the Ikeda optimization criterion. The analysis of structural vibration control using finite element software was presented. A single-storey eccentric structure and a four-storey eccentric structure with single TTLCD or TTLCDs were numerically simulated. Based on the TTLCD parameters using Ikeda formula, the structural analysis by SAP 2000 software compared with the results from MATLAB show that the method of transforming a TTLCD-structure to a TTMD-structure system is reasonable and feasible.
出处
《振动与冲击》
EI
CSCD
北大核心
2016年第20期183-189,共7页
Journal of Vibration and Shock
基金
国家自然科学基金(51608010)
北京市优秀人才培养资助青年骨干个人项目(2014000020124G007)
关键词
TTLCD
TTMD
参数优化
数值模拟
动力反应
减振控制
torsional tuned liquid column damper （TTLCD）
torsional tuned mass damper （TTMD）
optimal parameter
numerical simulation
dynamical response
vibration control
