• Title/Summary/Keyword: Urban railway stations

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A Study on Efficient Access Point Installation Based on Fixed Radio Wave Radius for WSN Configuration at Subway Station (지하철 역사 내 WSN 환경구축을 위한 고정 전파범위 기반의 효율적인 AP설치에 관한 연구)

  • An, Taeki;Ahn, Chihyung;Lee, Youngseok;Nam, Myungwoo
    • Journal of the Korea Academia-Industrial cooperation Society
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    • v.17 no.7
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    • pp.740-748
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    • 2016
  • IT and communication technologies has contributed significantly to the convenience of passengers and the financial management of stations in accordance with the task automation in the field of the urban railway system. The foundation of the above development is based on the large amounts of data from various sensors installed in railways, trains, and stations. In particular, the sensor network that is installed in the station and train has played an important role in the railway information system. The performance of AP is affected by the number of APs and their locations installed in the station. In the installation of APs in stations, the intensity of the radio wave of the AP on its underlying position is considered to determine the number and position of APs. This paper proposes a method to estimate the number of APs and their position based on the structure of the underlying station and implemented a simulator to simulate the performance of the proposed method. The implemented simulator was applied to the decision of AP installation at Busan Seomyeon station to evaluate its performance.

On the Study of Design Guidelines and a Design Case to Enable the Replacement of LRT Stations by Stops (경전철 역사를 대체하는 정류장 도입을 위해 필요한 설계지침의 도출 및 적용 사례에 관한 연구)

  • Kim, Joo-Uk;Park, Kee-Jun;Lee, Ji-Eon;Lee, Jae-Chon
    • Journal of the Korea Academia-Industrial cooperation Society
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    • v.16 no.5
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    • pp.3499-3510
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    • 2015
  • To cope with the increased demand on the intra-city transportation by urban rails, the introduction of the light rail transit (LRT) systems has been expedited in Korea due to the possible reduction of both the development and operation costs from adopting LRT systems. The LRT systems have so far been designed, constructed and operated based on the corresponding law and regulations. It has been conceived that fully complying with the existing guidelines may incur some extra costs on LRT. In addition, the present design of LRT stations seems to require unnecessarily long flow of passengers traffic, particularly for disabled people. In this paper, as an approach to solving the aforementioned issues, an introduction of 'LRT stops' has been studied where the stops are similar in concept to bus stops and are intended to replace the stations of a bigger scale in general. Specifically, necessary guidelines for design have been developed by modifying the existing ones to be fit with LRT stops. A design case was also presented to evaluate them. The effective use of the results reported here will provide an opportunity of cost reduction in connection with the construction and operation, and also let people benefit from convenient use of rails, thereby resulting in enhanced transportation welfare.

A Study on the Risk Evaluation of Subway Flood Inundation in Urban Area (도심지역 지하철 침수 위험도 평가에 관한 연구)

  • Kun-Hak Chun;Jong-Cheol Seo ;Hyeon-Gu Choi;Ji-Min Kim
    • Journal of Wetlands Research
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    • v.25 no.2
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    • pp.83-90
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    • 2023
  • Due to climate change, the occurrence of abnormal rainfall is increasing, and the intensity and scale of damage caused by heavy rain are increasing every year. In addition, as the frequency of heavy rains becomes more frequent, heavy rains often occur continuously, resulting in large flooding damage that has never been seen before in urban area. When near rivers and coastal areas are impermeable areas, the maximum flow increases rapidly as the rainfall intensity increases, so a comprehensive flood risk evaluation is needed considering the characteristics of the basin. In this study, the flood inundation risk evaluation was analyzed by giving scores on evaluation factors as a measure to prevent inundation in subway stations. Through the flood inundation risk evaluation process considering the comprehensive evaluation index, the flood risk evaluation was conducted on five urban railway stations with a large amount of traffic and floating population that had been inundated in the past. It is judged that by comprehensively analyzing this and establishing a inundation risk grade (grade 1 to 4) to establish a flood measure suitable for the risk grade.

A Study on the Developmental Directions of Transfer Stations with Traffic Cards Data - Focused on Daegu City - (교통카드자료를 이용한 환승정류장의 개발 방향에 관한 연구 - 대구시를 중심으로 -)

  • Kim, Ki-Hyuk;Lee, Seung-Cheol
    • KSCE Journal of Civil and Environmental Engineering Research
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    • v.32 no.6D
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    • pp.539-547
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    • 2012
  • Increasing the mode transfer volume between public transportation modes has known to be necessary for efficiency improvement of public transportation system operation and it is also found to be important to have relevant transfer point selection with reflection of current travel pattern. This study is in regards to providing a selection guideline for the location of transfer point between public transport modes. This case study has been carried out for Daegu Metropolitan City especially for public transportation users behaviour by analysis of daily usage of transportation card to identify the transfer travel pattern. A cluster analysis was applied to categorize the pattern of transfer stop which induces many users and a discriminant analysis also utilized for grouping the stops by number of transfer trip. This research produces the estimation result of transfer volume for urban railway system no.3 in Daegu City which is currently under construction. In addition, the locations of transfer center has also been proposed.

Investigation for Fire Flow of the Deeply Underground Shin-Gum-Ho Subway Station (대심도 신금호역사의 화재 유동에 대한 고찰)

  • Jang, Yong-Jun;Park, Il-Soon;Kim, Jin-Ho;Jung, Woo-Sung;Kim, Hag-Beom;Lee, Chang-Hyun
    • Proceedings of the KSR Conference
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    • 2010.06a
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    • pp.110-115
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    • 2010
  • Recently the deeply underground tunnels have been increased along the subway railroads of urban area compared to the past subway railroads. The Shin-Gum-Ho subway station (the Fifth lines, the depth : 46m) which is the third among the deep subway stations in the Korea was chosen as the model of deeply underground stations, and attempted to do simulation of fire. This station consists of three entrance, the basement first floor (B1), the basement second floor (B2), the basement eighth floor or platform (B8) and escalators and stairs from B2 to B8. The total number of grid was about 9,000,000 to make simulation of fire and smoke from the platform to entrance in this research, and the grid system was divided into 19 blocks to increase the efficiency of this simulation. The FDS (Fire Dynamics Simulation) was chosen to make the simulation of fire, and the model of turbulent flow was LES (Large Eddy Simulation). Each block is processed in a CPU using parallel processing of MPI (Message Passing Interface). The resource of CPU for this simulation is a ten of Intel 3.0 GHz Dual CPU (20 CPU).

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Estimating an Optimal Scale of a Railway Station with Non-Passengers (철도 비승차 이용객을 고려한 역사 시설물별 적정규모 산정방안)

  • Oh, Tae ho;Lee, Seon ha;Kang, Hee up;Insigne, Maria Sharlene L.;Lee, Sang Jae
    • The Journal of The Korea Institute of Intelligent Transport Systems
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    • v.16 no.4
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    • pp.76-91
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    • 2017
  • The Area of a domestic railway station is designed based on the 4-step traffic demand forecasting model with the average daily passenger count as one of its parameter. However, nowadays, due to increasing rate of railway station's function, the non-passengers are increasing. In order to consider those non-passengers who aren't using trains, assumed volume are added to the average daily passenger count of station to estimate the area, but the criteria being applied has no concrete basis. Therefore, this study aimed to recalculate the increasing non-passenger rate based on actual survey data of station users in any type of railway station to obtain the optimum area. Subsequently, the the design area was performed through pedestrian simulation. According to the result of the simulation, it was found that the total space of the exciting railway stations can be reduced up to 45% and will still satisfy the level of service(LOS) requirement.

Accident Risk Consequences Analysis for Operating a Hydrogen Refueling Station in Urban Railway Site (도심 내 철도부지 수소충전소 운영을 위한 사고 위험 영향 분석)

  • Jae Yong Lee;Deokkyu Youn;Chul-Ho Lee;Jaeyoung Lee
    • Journal of the Korean Institute of Gas
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    • v.27 no.4
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    • pp.70-77
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    • 2023
  • In response to climate change, each country is proposing a goal to reduce greenhouse gases in its energy supply and demand plan, and the use of hydrogen gas is a topic that is always prioritized as an energy resource for implementation. A popular way to use this hydrogen gas is the use of hydrogen fuel cell vehicles, and expansion of hydrogen charging stations is essential for using these hydrogen fuel cell vehicles. However, there are several limitations to the expansion of hydrogen refueling stations, the most representative of which is resident acceptance. Most of the hydrogen charging stations currently built in Korea are located in the outskirts with low population density, so the inconvenience to hydrogen fuel cell vehicle users has not been resolved, and as a result, there has been no progress in the spread of hydrogen fuel cell vehicles. In this paper, we analyzed the consequences of accident damage to determine the risks of constructing a hydrogen charging station on a railroad site frequently used by citizens. The target hydrogen charging station site was a railroad depot in Busan, and there are trains, national highways, and commercial facilities around this site. Assuming the worst-case scenario, we would like to consider the safety of the hydrogen refueling station site by analyzing the area affected by the accident and its consequence.

A Study on ATS Control Procedure to adopt Low Density Line (저밀도 노선 적용을 위한 ATS 제어절차에 관한 연구)

  • Cho, Bong-Kwan;Park, Kee-Joon;Park, Pyoung-Sik;Lee, Young-Soo
    • The Transactions of The Korean Institute of Electrical Engineers
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    • v.64 no.5
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    • pp.830-837
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    • 2015
  • A study which is to develop the low-cost urban railway system for low-density line such as Gwang-ju subway Line 2 is in progress, and its TCS(Train Control System) is required as an economic system which is able to train operation suitable in low-density line. We have developed the signaling equipment which is configured with automatic block system between stations, and the control center's equipment in order to meet the requirements of TCS mentioned above. In this paper, we propose the control procedure of ATS to be required for train operation management in the low-density line such as Gwang-ju subway Line 2. The control procedure of ATS considered all features such as the requirements analysis for train operation management, the functions of train control system to be applied and the block type. Also, it considered the station(interlocking, passenger, turn-back) type, station control(stop, route, departure, turn-back departure, turn-back) type, and train operation management for exiting and entering depot. The ATS control procedure proposed in this paper has an advantage in the cost and efficiency through unification and optimization of its function. And in cost of operating and maintenance, the ATS system has a feature that can be significantly reduced.

Performance Evaluation of Wireless Sensor Networks in the Subway Station of Workroom (지하철 역사내 기능실에 대한 무선 센서 네트워크 성능 분석)

  • An, Tea-Ki;Shin, Jeong-Ryol;Kim, Gab-Young;Yang, Se-Hyun;Choi, Gab-Bong;Sim, Bo-Seog
    • Proceedings of the KSR Conference
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    • 2011.05a
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    • pp.1701-1708
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    • 2011
  • A typical day in the subway transportation is used by hundreds of thousands are also concerned about the safety of the various workrooms with high underground fire or other less than in the subway users could be damaging even to be raised and there. In 2010, in fact, room air through vents in the fire because smoke and toxic gas accident victims, and train service suspended until such cases are often reported. In response to these incidents in subway stations, even if the latest IT technology, wireless sensor network technology and intelligent video surveillance technology by integrating fire and structural integrity, such as a comprehensive integrated surveillance system to monitor the development of intelligent urban transit system and are under study. In this study, prior to the application of the monitoring system into the field stations, authors carried out the ZigBee-based wireless sensor networks performance analyzation in the Chungmuro station. The test results at a communications room and ventilation room of the station are summarized and analyzed.

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An Alternative Evaluation Model for Benefit Measurement of Public Transportation by the Open of Urban Railway: Seoul Metro Line 9 (도시 철도개통에 따른 대중교통이용 편익측정을 위한 대안적 평가모델 : 지하철 9호선을 사례로)

  • Joo, Yong-Jin
    • Spatial Information Research
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    • v.19 no.4
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    • pp.11-20
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    • 2011
  • In accordance with low carbon and green growth paradigm, a subway is one of major public transit systems for resolving traffic congestion and decreasing traffic accidents. In addition, as subway networks expand, passengers' travel pattern in the subway network change and consequently affect the urban structure. Generally, new subway route has been planned and developed, mainly considering a travel demand forecast. However, it is desired to conduct an empirical analysis on the forecast model regarding change of travel accessibility and passenger demand pattern according to new subway line. Therefore, in this paper, an alternative method, developed based upon a spatial syntax model, is proposed for evaluating new subway route in terms of passenger's mobility and network accessibility. In a case study, we constructed subway network data, mainly targeting the no 9 subway line opened in 2009. With an axial-map analysis, we calculated spatial characteristics to describe topological movement interface. We then analyzed actual modal shift and change on demand of passengers through the number of subway passenger between subway stations and the number of passenger according to comparative bus line from Smart Card to validate suggested methods. Results show that the proposed method provides quantitative means of visualizing passenger flow in subway route planning and of analyzing the time-space characteristics of network. Also, it is expected that the proposed method can be utilized for predicting a passengers' pattern and its impact on public transportation.