A Study On The Safety And Efficiency Improving Strategies Of The Public Space Within Metro Transfer Stations

At present,in the context of TOD,POD,compact city,high-density architecture,safe city and efficient space integration,subway transfer station has gradually become an element of urban node and open network structure.The subway transfer station,especially in the central area of the city,is highly complex and comprehensive because of the high concentration of people and the tight influence area around the station.This kind of station safety evacuation contradiction is the most prominent,transfer efficiency contradiction is the most prominent.It is urgent to explore and deal with key issues.This paper takes the public space of subway transfer stations as the research object,from the perspective of "safety and efficiency",combines the types and characteristics of subway transfer stations,classifies 8 typical subway transfer stations in central areas of Shanghai and chongqing,analyzes the key problems in the current situation of their public space,and puts forward optimization strategies.Finally,the feasibility of the above optimization strategy is verified through the simulation test of the case of nanjing east road station,which is helpful to guide the safety and efficiency design of public space of subway transfer station.This paper consists of six chapters,which are mainly discussed as follows:Chapter 1: introduction.The present situation and problems of the world and China subway are summarized.This paper elaborates the reasons for choosing public space of metro transfer station as the research object and taking safety and efficiency as the starting point.Space security,space efficiency and other related concepts defined.Define research objectives and methods.Chapter 2: overview of the status quo--the selection,types and characteristics of subway transfer station samples.Shanghai and chongqing are selected as typical cities.Eight typical transfer stations in central Shanghai and chongqing were selected as research objects and classified and summarized.Chapter 3: problem analysis--the key issue of public space safety and efficiency in metro transfer station.Aiming at the 8 typical transfer stations in the second chapter,four key problems of the public space are summarized from the perspective of "safety and efficiency".Key problem one: partition of fire prevention and partition.Discussion and comparison of fire prevention zoning in 8 typical metro transfer stations.Key problem two: seek refuge to escape.This paper discusses the problem of refuge and escape by classifying three kinds of metro transfer stations,namely,large passenger flow transfer hub stations,shallow transfer stations and deep transfer stations.Key problem 3: stereo arrangement.Combined with investigation,Depthmap software was used to analyze the transfer mode and streamline organization of the public space of typical subway transfer stations.Key problem four: bottleneck and node problem.Using Agent to analyze the bottleneck and node of the public space of typical subway transfer station.Chapter 4: optimization strategies--strategies for the safety and efficiency of public space in metro transfer stations.Aiming at the four key problems analyzed in the third chapter,four optimization strategies are put forward.Key issue one: the basic strategy of fire zoning and separation.In this paper,8 typical subway transfer stations are summarized,including fire partition diagram and 7 fire separation measures.Deal with the key problem two: escape.For large passenger flow of metro transfer hub station,take refuge floor;In response to the shallow subway transfer station,the emergency evacuation escape channel;For deep underground transfer stations,escape shafts should be adopted.Answer key problem 3: the basic strategy of stereo arrangement.In response to the transfer mode,the reservation,reconstruction and expansion,new transfer line;To cope with the transfer streamline,reorganize the streamline layout and transform the transfer space.Key problem four: basic strategies for bottlenecks and nodes.Optimization of four key bottlenecks and nodes in transfer hall central area,building escalator,security inspection machine,gate machine and entrance and exit channel.Chapter 5: simulation application--taking nanjing east road station as an example.Using the optimization strategy and specific examples,Anylogic software is used to conduct simulation tests under the guidance of security strategy and efficiency strategy respectively,so as to verify the effectiveness of the optimization strategy.Chapter 6: prospect of conclusion.This paper puts forward three main conclusions,summarizes the four innovation points of this paper,and puts forward the prospect of the follow-up research on the optimization strategy of public space of metro transfer station from the perspective of "safety and efficiency".