黏滞耗能减震结构能量反应分析的基础研究  

The base study on energy response analysis for viscous damping structure with energy dissipaters

作　　者：熊仲明[1] 孟浩[1] 王丽珍[1] 

机构地区：[1]西安建筑科技大学土木工程学院,陕西西安710055

出　　处：《建筑结构学报》2008年第S1期120-124,共5页Journal of Building Structures

基　　金：西安市科技攻关课题(GG04051);陕西省自然基金(2003E230);西安建筑科技大学基础研究基金(JC0511)

摘　　要：地震对结构的作用是一种能量的传递、转化与消耗过程,而减轻或控制地震反应的基本原则主要是以适当的方式耗散地震输入的能量,因此能量的输入、转化和吸收(耗散)成为地震反应的基本特征。本文采用速度型黏滞阻尼器,利用有限元分析程序,综合考虑地震动三要素(峰值、频谱、持时)、结构自身动力特性(阻尼比、自振周期)和黏滞阻尼器参数(速度指数、阻尼系数)等因素,对钢筋混凝土耗能减震结构进行了地震动总输入能受各种因素影响的变化规律的弹塑性时程分析;探讨了黏滞阻尼器速度指数的取值范围,取得了一些有意义的研究结果,为减震结构地震反应的能量分析方法走向实用化提供了基础性资料。The action of earthquake on structure is a process to deliver,convert and consume the energy.The basic principle to ease or control the earthquake reaction is consuming the energy in appropriate way,so the importation,conversion and absorption(consume to spread) of the energy become the basic characteristic of the structural seismic response.The energy analysis method is applied to a reinforced concrete structure with viscous damping device by finite element,considering the seismic motion parameters(i.e.amplitudes,frequency spectrum and lasting time),structural dynamic parameters(i.e.damping ratio and periods of free vibration) and fluid viscous damper parameters(i.e.speed index number and damping coefficient).The varied laws of elastic-plastic structural seismic total input energy in viscous damping energy are investigated.The index scope selection and application for viscous damping is discussed.The fundamental data is obtained for energy response analysis of viscous damping structure with energy dissipaters.

关 键 词：能量分析 减震结构 速度型黏滞阻尼器 

分 类 号：TU352.11[建筑科学—结构工程]