摘要
本文研究了一种新的控制结构体系——巨型-子结构控制体系。根据控振结构体系的特点和通过对该结构的变形分析:主框架采用弯曲模型,而次框架采用剪切模型的集中质量模型,据此推导了控振结构的运动方程。利用复模态方法,对它和普通巨型框架结构进行了2种非平稳地震作用下的对比分析。研究结构表明:这种新的结构体系能有效控制地震响应,结构安全性和舒适度均有明显提高。
Vibration-controlling mechanism and superiority of a new control system controlled mega-substructure systems are studied. According to the peculiarity and deformation of the systems,the main frame is of bending deformation and the subframe is of shear deformation. With concentrated masses model, the dynamic equation of this system is derived. Based on the complex mode analysis theory of random vibration, for comparison, one megaframe without control and the other with sub-control are studied under the same non-stationary seismic load condition. The significant cost-effectiveness of the mega-subframe system is demonstrated in controlling the acceleration responses of mega frame to seismic loads, not only enhancing the safety of structure but also improving the comfort of occupants.
出处
《地震工程与工程振动》
CSCD
北大核心
2007年第2期120-123,共4页
Earthquake Engineering and Engineering Dynamics
基金
西北工业大学科技创新基金(M450211)
关键词
巨型-子结构控制体系
复模态分析方法
非平稳地震激励
调频质量阻尼器
控振结构
controlled mega-substructure systems
complex mode theory
tuned mass damper
non-stationary seismic excitation
vibration-control structures
