The Safety Evaluation Of Subway Station Key Regions From The Crowded Perspective

By the end of 2017,a total of 34 cities in China have completed and operated urban rail transit lines,opening 165 lines in total and operating a total mileage of more than 5,000 km.Rail transit has brought great convenience to people's life,but because the subway station is a "closed space",the behavior and psychology of pedestrians in which are restricted are very easy to produce crowded behavior,and there are certain safety risks.Crowded accidents will spread rapidly after the occurrence of secondary accidents will also occur,resulting in more serious safety accidents.Based on the regional safety evaluation of subway stations from the perspective of congestion,it can be judged whether the relevant design schemes of subway stations have potential safety risks under congestion factors,so as to reduce or avoid subway safety accidents caused by congestion.The main contents of this paper include:1)Subway station safety analysis and safety evaluation of key areas to choose.The subway station has a multi-directional,sophisticated,overrun,and it has the characteristics of a transient passenger flow and is in a confined space,and the passengers have a limited walking and walking behavior,and because of the crowding and pushing,and the trampling and the continued safety,there is a larger security risk.There's a lot of functional areas in the subway station,and it's a detailed analysis of the functional areas of the average subway station,which is the key to the safety of the subway station,and the key areas that are the most important to the subway station are the platform and up and down the stairs.At the same time,combined with the characteristics of extra simulation station selected the outbound gate waiting area as the key areas of safety evaluation.2)Selection of evaluation indexes and determination of standards for metro key safety areas.In determining the area of safety evaluation,on the basis of considering crowded perspective of pedestrian safety features to the pedestrian space buffer area area of weighting factors,refer to the handbook of American traffic capacity,screening and determine the outbound brake machine platform waiting area,up and down the stairs area,regional security evaluation index for "per capita area";The corresponding evaluation criteria of the above safety evaluation indexes are determined.3)An example application of critical area safety evaluation of subway station based on crowded Angle.Through the evaluation and analysis of the schemes before and after the reconstruction of yingkou road station of tianjin metro,by comparing the key regional evaluation indexes of the schemes before and after the reconstruction,the security of the schemes after the reconstruction is better than that before the reconstruction,which is consistent with the running effect of the scene simulated by the software,proving that the evaluation schemes are real and effective.