调液阻尼器对偏心结构扭转耦联振动控制的研究  

TORSIONALLY COUPLED VIBRATION CONTROL OF ECCENTRIC BUILDINGS USING TUNED LIQUID DAMPERS

作　　者：霍林生[1] 李宏男[1] 

机构地区：[1]大连理工大学海岸与近海工程国家重点实验室,辽宁大连116024

出　　处：《工程力学》2010年第1期84-90,共7页Engineering Mechanics

基　　金：教育部创新团队计划项目(IRT0518);高等学校学科创新引智计划项目(B08014);国家"十一五"科技支撑计划重点项目(2006BAJ06B03);国家"十一五"科技支撑计划重大项目(2006BAJ03A03)

摘　　要：该文利用调液阻尼器来控制偏心结构在地震作用下的扭转耦联振动。首先建立起控制体系的运动方程及时域内的求解方法。以一个8层偏心钢结构为算例,在结构顶层沿两个主轴方向正交放置两个调液柱型阻尼器,并在结构质心处安放一个环形调液阻尼器。基于该文给出的优化目标函数和遗传优化算法,对调液阻尼器的参数进行优化设计。最后对结构输入不同场地类型的地震波,在时域内分析调液阻尼器对结构扭转耦联振动的减振作用。分析结果表明:合理设计调液阻尼器的有关参数,能使其有效控制结构的平-扭耦联振动。This paper focuses on the seismic response control of eccentric structures by use of tuned liquid dampers. The equation of motion for the control system is derived and the solving method for the equation is presented. An 8-story eccentric steel building, with two tuned liquid column dampers on the orthogonal direction and one circular tuned liquid column damper on the mass center of the top story, is analyzed. Based on the proposed objective function, the optimal parameters of liquid dampers are optimized by Genetic Algorithm. The structural responses with and without liquid dampers subjected to bi-directional earthquakes in different site conditions are analyzed in the time domain. The results show that the torsionally coupled responses of structures can be effectively suppressed by liquid dampers with optimal parameters.

关 键 词：调液阻尼器 偏心结构 地震反应 结构控制 遗传算法 

分 类 号：TU352.1[建筑科学—结构工程]