| Summary: | 碩士 === 國立臺灣科技大學 === 建築系 === 99 === Railway stations in recent years are planned mainly based on the underground design in order to meet the requirements for urban areas. However, the platform is usually designed to be located at the bottom level of passengers’ circulation paths when planning and designing an underground railway station. Accordingly, too many people may crowd and stay on the platform during the transportation peak when the limit of people to enter the platform is not well controlled. If we can know and control the limit of people allowed to access the platform, safety of the people on the platform will be significantly improved. The present study is to divide the platform into different exit areas for review according to the location of stairs and to calculate the time of exiting from each exit area. The exit time is primarily related to the moving distance, the exit width, and the density of people, wherein the moving distance relates to space dimensions, and the density of people relates to space area whereby the limit of people allowed to access each of the stairs can be calculated through the mutual relation between the aforementioned factors so as to discuss subjects about exit of the platform. Accordingly, stated below is the study report based on the case studies of Songshan Station, the Taiwan Railway platforms of Nangang Station, and the Taiwan High Speed Rail platforms of Nangang Station.
1.The limit of people allowed to access the platform is as follows: 1,481 persons for Platform One and 1,418 persons for Platform Two of the TRA Songshan Station; 532 persons for Platform One, 746 persons for Platform Two, and 520 persons for Platform Three of the TRA Nangang Station; and 1,523 persons for Platform Two and 1,219 persons for Platform Three of the HSR Nangang Station.
2.The width of the stairs is the most important factor to influence the exit time, and the location of the stairs is the most important factor to influence the limit of people on the platform.
3.The ratio of “the width of the stirs” to “the furthest distance between two adjacent staircases” is as follows: 1:42 for Platform One and 1:39 for Platform Two of the Songshan Station; 1:24 for Platform One, 1:28 for Platform Two, and 1:21 for Platform Three of the Taiwan Railway Nangang Station; and 1:49 for Platform Two and 1:32 for Platform Three of the Taiwan High Speed Rail Nangang Station.
4.For the area where the exit time is more than 4 minutes, it is advised that the stairs in that area be used exclusively as exit stairs to improve the safety of that area. Further, the aforementioned area should be identified as a dangerous area. In the event of emergence, the administrators should help guide and disperse the crowd of people to the nearest stairs.
5.The middle portion of the TRA Songshan Station is safer than the other areas thereof. The left portion of the platform of the TRA Nangang Station is safer than the other areas thereof.The right portion of the platform of the HSR Nangang Station is safer than the other areas thereof.
6.Reinforce the dispersal in the high density areas in order to prevent people from being crowded so as to ensure the safety escape.
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