城市综合防灾减灾能力评价的可变模糊集理论  

Variable fuzzy sets theory for assessment of urban comprehensive disaster prevention and mitigation capability

作　　者：杨龙江[1] 苏经宇[1,2] 王威[1] 王志涛[1,2] 

机构地区：[1]北京工业大学抗震减灾研究所,北京100124 [2]北京工业大学建筑与城市规划学院,北京100124

出　　处：《土木工程学报》2013年第S2期288-293,共6页China Civil Engineering Journal

基　　金：国家十二五科技支撑计划(2011BAK07B01)

摘　　要：建立城市综合防灾与减灾能力评价指标体系,制定评价指标分级标准;以城市为基本评价单元,采用可变模糊评价模型确定评价单元指标对各级指标标准区间的相对差异函数和相对隶属度,通过变换组合参数进行综合评价,分别得到城市灾害危险等级、易损性等级、承灾能力等级,并综合三方面的评价结果计算城市综合防灾减灾能力水平。通过对5个典型城市进行综合防灾减灾能力评价,结果与其他方法结果一致,证明了该方法的有效性与合理性。Evaluation index system and grading standard for urban comprehensive disaster prevention and disaster mitigation capacity were established.Then taking the cities as basic evaluation units,on the basis of variable fuzzy sets theory,the corresponding model for variable fuzzy assessment was established.This could reasonably identify the relative membership degree between the index of assessment unit and its standard interval.So we can properly determine the comprehensive assessment grade of each unit by varying the parameters of the model.Then the urban disaster hazard grade and the vulnerability grade were calculated,as well as the disaster-carrying capacity grade.Based on the three results,the level of urban comprehensive disaster prevention and mitigation capability was established.At last urban comprehensive disaster prevention and mitigation capacity of five typical was evaluated,the results were consistent with the results of other method and that proved the effectiveness and rationality of the method.

关 键 词：城市综合防灾减灾能力 可变模糊集 评价模型 

分 类 号：X43[环境科学与工程—灾害防治]