摘要
钢筋混凝土巨型框架多功能减振结构是由主框架、次框架和减振装置组成的 ,是一种新型的非经典阻尼减振结构系统。研究了钢筋混凝土巨型框架多功能减振结构的近似振型分解反应谱设计方法 ,给出了等效振型阻尼比的计算公式 ;通过算例分析 ,研究了近似振型分解法的计算精度 ;
The multifunctional vibration absorption of RC megaframe structure consists of the major frame,the minor frames and the control devices;therefore it is a non classical damping system.The spectral design method based on the approximate decoupled modal analysis for the multifunctional vibration absorption of RC megaframe structure is studied in this paper.The formula of the equivalent modal damping ratio based on the modal strain energy is given.The precision of the approximate decoupled modal analysis is investigated.The calculating procedure of the spectral design method is also presented.
出处
《工业建筑》
CSCD
北大核心
2002年第1期7-9,共3页
Industrial Construction
基金
国家自然科学基金资助项目 (编号 :5 97780 40 )
关键词
钢筋混凝土
巨型框架
减振结构
等效振型阻尼比
反应谱
RC megaframe structure\ multifunctional vibration absorption\ equivalent modal damping ratio\ approximate decoupled modal analysis\ spectral design method
