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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。
By comparing the economic loss assessment models of domestic earthquake disasters, aiming at the single problem of the existing model evaluation indexes, the difference of economic losses of urban earthquake disasters in the region can not be effectively reflected, and the economic loss assessment index system of regional earthquake disasters is constructed. Then, the weights of each index are obtained, and then the economic loss evaluation model of regional earthquake disaster under the influence of multiple indicators is constructed. Finally, taking the previous devastating earthquake disaster data from 1996 to 2009 as an example, this paper compares the calculation results with the existing evaluation model results to verify the effectiveness and feasibility of the model.