结构半主动变阻尼控制的研究

英文篇名：Study on Semiactive Structural Control Using Variable Dampers
中文刊名：建筑科学
英文刊名：Building Science
作者：杨润林 ; 周锡元 ; 闫维明 ; 宋波 ; 刘锡荟
英文作者：YANG Run-lin~1 ; ZHOU Xi-yuan~2 ; YAN Wei-ming~2 ; SONG Bo~1 ; LIU Xi-hui~3(1.Department of Civil Engineering ; Civil & Environment Engineering School ; University of Science and Technology Beijing ; Beijing 100083 ; China ; 2.Laboratory of Earthquake Engineering and Structural Retrofit ; School of Architecture and Civil Engineering ; Beijing University of Technology ; Beijing 100022 ; China ; 3.Electronic Information Center ; Ministry of Information Industry ; Beijing 100846 ; China)
中文关键词：结构控制 ; 变阻尼控制 ; 半主动控制 ; 离复位策略 ; 地震激励
英文关键词：structural control ; variable damper control ; semi active control ; OTE strategy ; seismic excitation
出版日期：2007-03-20
机构：北京科技大学土木与环境工程学院土木工程系,北京工业大学建工学院工程抗震与结构诊治实验室,北京工业大学建工学院工程抗震与结构诊治实验室,北京科技大学土木与环境工程学院土木工程系,信息产业部电子信息中心北京100083,北京100022,北京100022,北京100083,北京100846
年：2007
期：03
出版单位：建筑科学

摘要

作为经典范例之一,半主动变阻尼系统得到了广泛的应用,然而近来的研究显示仍需要对其控制性能重新认识。本文以谐波作用下支座激励的理论为出发点,讨论了粘性变阻尼控制系统可能成立的基本条件和适用范围。算例以一个设置在基础层的半主动变阻尼器控制系统为例,采用离复位控制策略进行了数值模拟,并得出了两个重要结论:(1)变阻尼控制系统只有在结构动力反应远离共振的情况下,才有可能同时取得位移峰值和加速度峰值的减小;(2)结构动力反应与控制效果的改善依赖地面运动特性,在一般情况下相比被动阻尼控制并不能明显提高控制效果,甚至有所不及。
It's well known that the semiactive control system is very attractive due to a large control force capacity,a small power demand and its inherent stability.As a classical example the semiactive variable damper is widely used,however,the latest research results show that its performance still need to be further studied.In this paper based on the theory of a SDOF vibration-isolation system under harmonic excitation,the basic conditions and limits of the applicability of viscous variable dampers are discussed.As a numerical example a sixstory base-isolated frame is considered.According to the qualitative analysis and numerical simulation,two important conclusions are drawn :(1) Only far from the resonance may reductions in both the displacement and acceleration responses be possible for structures with viscous variable dampers;(2) The effectiveness of viscous variable dampers on reducing the response of structures depends on the characteristics of the ground motion that excites structures.In contrast to that of passive dampers,the effect of variable dampers is not better,even its effect is inferior.

引文

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