Evaluation of fire safety resilience of metro station based on improved matter-element extension model with variable weight
To further improve the level of fire safety management in metro stations,the concept of fire safety resilience of metro stations was proposed based on the theory of resilience.First,based on the framework of evaluating the fire safety resilience of metro stations,we established a metro station fire safety resilience evaluation index system containing 4 primary indicators and 28 secondary indicators from four aspects:human,machine,environment,and management.It takes the emergence of resilience absorption ability,resistance ability,recovery ability,and adaptation ability in the fire development stage as the core.Second,we used the variable weight theory to assign weights to the evaluation indexes and combined the closeness principle and the traditional matter-element extension model to determine the fire safety resilience level of metro stations.Then we built a fire safety resilience evaluation model based on an improved matter-element extension model with variable weight for metro stations,which solves the problem of not considering ambiguity and randomness in the previous resilience evaluation process.Third,the model was applied to analyze a metro station in Qingdao.The results show that the fire safety resilience level of the metro station is level Ⅱ,higher resilience,with a weak tendency to level 111,general resilience.This finding is almost consistent with the actual situation.And the resilience improvement measures were proposed in response to the evaluation results,and the effectiveness of the improved model was verified by comparing the evaluation results of the improved model with the traditional matter-element extension model.As a result,the proposed improved matter-element extension model with variable weight can effectively reduce the influence of subjective factors,and avoid the deficiency of the maximum affiliation criterion neglecting the ambiguity of the object when determining the evaluation level.Thus it can improve the accuracy of the evaluation results,and provide a certain reference basis for improving the metro operation management level.
safety engineeringmetro stationevaluation of fire safety resiliencematter-element extension modelvariable weight theorycloseness principle
NETL
NSTL
万方数据
维普
