摘要
本文对高层建筑地震反应进行优化阻尼器控制研究。文中首先简述了阻尼器控制的原理，提出了便于实际应用的阻尼筒控制系统。由于阻尼控制器的显著阻尼水平，使得建筑具有非经典阻尼分布，因而采用复模态方法进行模态分析，研究了阻尼控制器的参数及其在建筑上的安装位置对建筑复模态的影响。在地震反应分析中，提出了子空间复模态时程分析方法，有效地改善了复模态方法在非经典阻尼结构地震反应分析中的应用。对阻尼器的阻尼参数进行了优化分析，并对一个８层建筑的地震反应施加阻尼器控制，结果表明，优化阻尼器控制显著地降低了建筑的地震反应。
In this paper, the optimal damper control of seismic responsefor tall buildings has been studied. Firstly, the principle of dampercontrol is briefly described, and a damping tube control system isdesigned. Because of the non-ciassiscal damping distribution on but iding due to the evident damping levels of the damping controllers,the modal analysis is carried out by means of the complex modalmethod. The influences of the parameter of the damping controllersand the positions of these controllers on the building upon the complex modes are investigated. In seismic analysis, a subspace complex modal time history approach is proposed, which efficientlyimproves the practical application of the complex modal approachto dynamic analysis of non-classically damped structures. Theparameters of the damping controllers are optimized. Finally, anexample of an 8-story building is studied and the results show thatthe seismic response of the building controlled by optimal damperis remarkably decreased.
出处
《建筑结构学报》
EI
CAS
CSCD
北大核心
1994年第4期53-61,共9页
Journal of Building Structures
基金
国家自然科学基金
