基于地震动参数的结构易损性表达方法研究-地震工程与工程振动.PDFVIP

29 6 Vo.l 29 No. 6 2009 12 JOURNAL OF EARTHQUAKE ENGINEER ING AND ENG INEERING V IBRATION Dec. 2009 : 1000- 1301( 2009) 06- 0102- 06 刘如山, 胡少卿, 邬玉斌, 张美晶 (, 1 0080) : , , , - - - , : ; ; ; : P31 9 7 : A R esearch on structure vu lnerab ility expression way based on seism ic ground m otion param eters LIU Rushan, HU Shaoqing, WU Yubin, ZHANG M eijing ( Institute of EngineeringM echanics, China E arthquake Adm inistration, H arbin 1 0080, China) Abs tract: The probab ility of each damage grade of structure in given intensity is fitted continuously by use of beta distribution function. And accord ing to the correspond ing relation bewt een intensity and seism ic groundmotion pa rameter, the beta probab ility density d istribution of structure damage ratio and the probab ility of every damage grade in each acceleration peak value are calculated on the basis of seism ic peak motion parameter by logarithm interpola tionw ay. Thus the tradition step d istribution w ay of structure vulnerab ility, w hich is expressed by intensity versus earthquake damage grade is converted to continuous distribution w ay expressed by seism ic ground motion parameter compared to destruction ratio. The practical data show that th is transformed approach is effective and provides a ref erence for earthquake damage pred iction and earthquake econom ic loss evaluation. K ey w ord s: Beta d istribution function; intensity; vulnerab ility matrix; earthquake damage grade , , , [ 1- 4] , , : 2009- 03- 0 ; : 2009- 10- 28 : ( 0303008) : ( 1964- ), , , ,. Em ail: liuru shan@ sina. com 6 : 103 , , , ,