结构工程师2017，Vol.33Issue(6)：65-73,9.
考虑应变硬化的软钢阻尼器滞回模型及应用
Hysteretic Modeling of Steel Dampers Considering Strain Hardening and Its Application
摘要
Abstract
A steel damper with slits cut from the steel plate was designed for seismic retrofitting of an existing concrete frame.Energy is mainly dissipated through in-plane flexural inelastic deformation of vertical strips.Hysteretic behavior of the steel damper was investigated experimentally by low cycle loading test,indicating that the steel damper exhibits stable hysteresis and significant strain-hardening under loading reversals.In order to establish a hysteritic model of the steel damper considering the strain-hardening effect,a parallel model composed of Bouc-Wen material and hardening material was proposed for interpreting the hysteretic behavior of the steel damper,and analytical modeling was implemented by using OpenSEES program,a procedure was developed based on MATLAB program for determining parameters of the hysteretic model.The accuracy was demonstrated by comparing hysteretic curves obtained from numerical simulation and test results,respectively.The proposed parallel model can readily be incorporated into inelastic dynamic response analysis of a frame equipped with the steel damper.The procedure was also applied to prediction of hysteretic response of the steel dampers during a shaking table test.关键词
软钢阻尼器/应变硬化/滞回模型/Bouc-Wen模型/OpenSEES程序Key words
steel damper/strain-hardening/hysteretic model/Bouc-Wen model/OpenSEES program引用本文复制引用
朱奇云,吕西林..考虑应变硬化的软钢阻尼器滞回模型及应用[J].结构工程师,2017,33(6):65-73,9.基金项目
国家自然科学基金重大国际合作项目(51261120377) （51261120377）
