【摘要】 通过对国内地震灾害经济损失评估模型比较,针对现有模型评价指标单一问题,不能有效体现区域内城市地震灾害经济损失的差异,构建了区域地震灾害经济损失评价指标体系,并利用PCA方法对其指标进行分析,得到各个指标的权重值,进而构建了多指标影响下的区域地震灾害经济损失评价模型。最后以1996-2009年历次破坏性地震灾害数据为例进行分析,将计算结果与已有的评估模型结果进行对比,验证了该模型的有效性和可行性。更多还原

【Abstract】 Through the comporison of domestic earthquake disaster economic loss evaluation model it is found that an existing model with single evaluation index can’t effectively embody the difference of urban earthquake disaster economic losses.It is built the regional seismic hazard assessment index system of economic losses.And PCA method is used to analyze the index,the weight value of every index is got,and then it is built of muHi-index influence the earthquake disaster economic loss evaluation model.Finally,taking destructive earthquake disasters data from 1996 to 2009 for example,analyses are done.The calculated results are cmpured with existing assessment model results,which verifies the feasibility and effectiveness of the model.更多还原