Research On The Vulnerability Assessment Of Heavy Rainfall In Beijing Subway Station

Subway has became one of the important infrastructures to maintain the safe operation of the city.Urban rail transit system,with its convenience,punctuality,and economy,attracts a large amount of ground passenger flow,which greatly eases the ground traffic congestion.However,due to the closeness of subway stations and the characteristics of large passenger flow,once floods and other accidents occur,the danger is extremely high.A large amount of rainwater flooding into subway stations within a short period of time can easily result in panic,crowding,trampling,and drowning.At the same time,he equipment in the station is subject to water accumulation.Damage caused a hidden danger to the safe operation of the subway.In recent years,more and more cities have been flooded due to extreme weather conditions and caused huge losses of property.Therefore,the study of the vulnerability of the underground rainstorm in the subway station is of great significance to the prevention of subway torrential rain accidents,maintaining the normal operation of the underground rail transit,the safe operation of the city,and the safety of people's lives and property.Based on the above,this paper mainly uses the literature analysis,questionnaire survey,model construction and other methods to assess the vulnerability of the underground rainstorm in the subway station.Firstly,the concept of the vulnerability of the rainstorm within the subway station is defined and defined.Secondly,the factors affecting the vulnerability of the underground station in the subway station are analyzed and the vulnerability assessment system is established.Thirdly,the AHP-fuzzy comprehensive evaluation model is constructed;A typical subway station is used as an example to evaluate.This article mainly concludes:The vulnerability of a subway station torrential rain is an objective state when describing the unfavorable conditions of a subway station facing stormwater accumulation.It is an intrinsic property of a subway station and can only be revealed when faced with disturbances;The sexuality is not only related to the individual structure of the subway station,but also related to the city's flood prevention and disaster resilience and the ability of the subway station to resist floods and disasters.Among them,the individual structural characteristics have the greatest impact on the system vulnerability;based on the model results,the results obtained are integrated from the design of the subway station.Phases and management operations are considered in two aspects to propose corresponding countermeasures and recommendations.