CAJ | 학술논문

用贝塔分布函数对给定烈度下结构各个破坏等级的概率分布进行了破坏比概率密度的拟合,以地震动峰值作为地震动参数,根据烈度和加速度峰值的对应关系以对数插值方式计算了在任意一个峰值加速度下结构破坏比的倍塔概率密度分布及各个破坏等级的概率,从而使结构易损性的表达方式由烈度-震害等级构成的二维阶跃性易损性矩阵转化为由地震动参数-破坏比概率密度函数或地震动参数-各破坏等级的概率来表达的方式.试算结果表明,这种转化方法是可行的.本文为震害预测和地震经济损失估计提供参考.
용패탑분포함수대급정열도하결구각개파배등급적개솔분포진행료파배비개솔밀도적의합,이지진동봉치작위지진동삼수,근거열도화가속도봉치적대응관계이대수삽치방식계산료재임의일개봉치가속도하결구파배비적배탑개솔밀도분포급각개파배등급적개솔,종이사결구역손성적표체방식유열도-진해등급구성적이유계약성역손성구진전화위유지진동삼수-파배비개솔밀도함수혹지진동삼수-각파배등급적개솔래표체적방식.시산결과표명,저충전화방법시가행적.본문위진해예측화지진경제손실고계제공삼고.
The probability of each damage grade of structure in given intensity is fitted continuously by use of beta distribution function. And according to the corresponding relation between intensity and seismic ground motion parameter, the beta probability density distribution of structure damage ratio and the probability of every damage grade in each acceleration peak value are calculated on the basis of seismic peak motion parameter by logarithm interpolation way. Thus the tradition step distribution way of structure vulnerability, which is expressed by intensity versus earthquake damage grade is converted to continuous distribution way expressed by seismic ground motion parameter compared to destruction ratio. The practical data show that this transformed approach is effective and provides a reference for earthquake damage prediction and earthquake economic loss evaluation.