Probabilistic Distribution of Displacement Response of Frictionally Damped Structures under Earthquake Loads
The accurate peak response estimation of a seismically excited structure with frictional damping system(FDS)is very difficult since the structure with FDS shows nonlinear behavior dependent on the structural period,loading characteristics,and relative magnitude between the frictional force and the excitation load.Previous studies have estimated that by replacing a nonlinear system with an equivalent linear one or by employing the response spectrum obtained based on nonlinear time history and statistical analysis.In the case that earthquake load is defined with probabilistic characteristics,the corresponding response of the structure with FDS becomes to have probabilistic distribution.In this study,nonlinear time history analyses were performed for the structure with FDS subjected to artificial earthquake loads generated using Kanai-Tajimi filter.An equation for the probability density function(PDF)of the displacement response is proposed by adapting the PDF of the normal distribution.Finally,coefficients of the proposed PDF are obtained by regression analysis of the statistical distribution of the time history responses.Finally,the correlation between PDFs and statistical response distribution is presented.
Frictional damping system (FDS) Power spectral density function (PSDF) Probabilistic density function(PDF)
Sang-Hyun Lee Kyung-Jo Youn Kyung-Won Min Ji-Hun Park
Department of Architectural Engineering,Dankook University,Seoul,Korea Department of Architectural Engineering,University of Incheon,Incheon,Korea
国际会议
The World Forum on Smart Materials and Smart Structures Technology(SMSST07)(2007年世界智能材料与智能结构技术论坛)
重庆·南京
英文
2007-05-01（万方平台首次上网日期，不代表论文的发表时间）