水平地震作用下巨子型有控结构研究

英文篇名：Investigation on dynamic performance of the mega-sub controlled frame under horizontal earthquake
中文刊名：建筑结构
英文刊名：Building Structure
作者：连业达 ; 张洵安 ; 王朝霞
英文作者：Lian Yeda1 ; Zhang Xun'an1 ; Wang Zhaoxia2(1 Northwestern Polytechnical University ; Xi'an 710072 ; China ; 2 Xi'an Institute of Coal Industrial Department ; Xi'an 710054 ; China)
中文关键词：巨子型有控结构 ; 随机振动 ; 复模态分析 ; 调谐减振原理
英文关键词：mega-sub controlled frame ; random vibration ; complex modal analysis ; tuned vibtation-absorption theory
出版日期：2010-12-25
机构：西北工业大学;煤炭工业部西安设计研究院;
年：2010
期：12
出版单位：建筑结构

摘要

研究子结构刚度对巨子型有控结构位移响应的影响。结合刚度变化研究附加阻尼对巨子型有控结构的影响规律,并分析附加阻尼在巨子型有控结构中的作用。结合12种场地工况研究巨子型有控结构减震性能对地震激励的适应性。结果表明:附加阻尼可以改进子结构动力性能,确保巨子型有控结构在更宽的激励频率范围内工作,且将巨、子结构的侧移响应进一步降低;子结构刚度越小,附加阻尼对巨子型有控结构的影响越大;巨子型有控结构中,附加阻尼存在优化区间;子结构刚度对优化区间影响不大;装有附加阻尼的巨子型有控结构相比于未安装附加阻尼前,对子结构侧移控制率可达81.9%,对巨结构侧移控制率可达71.5%;巨结构侧移响应控制率对场地条件具有很好的适应性。
The effect of the sub-structure stiffness on the dynamic performance of the mega-sub controlled frame was investigated.Effect rules of the additional damping to the mega-sub controlled frame with different sub-stuctural stiffness were researched,and the function of the additional damping in the mega-sub controlled frame was examined.Results show that the additional damping can improve the sub-structure dynamic performance,and ensure the mega-sub controlled frame to exert its self-control function,and further reduce the displacement of the mega-structure and the sub-structure.Optimized additional damping exits in the mega-sub controlled frame,and it is scarcely affected by the change of the sub-structure stiffness.Control ratio of the mega-sturcture displacement can be adapted to all kinds of sites well.

引文

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