• 한국안전학회지
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• 제23권4호
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• pp.85-89
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• 2008

Work ability and job stress have become the important issues in Korean workplace recently. This study researched work ability and job stress and also analyzed correlation with work ability and job stress using the Work Ability Index and the Karasek's Job Content Questionnaire against 742 subway workers. As the results, Work ability in subway workers was good in general. The relation between job stress and job type showed statistical significance (p<0.05). The relation between job stress and diseases showed statistical significance in musculoskeletal disorders(p<0.05), heart disease, and gastrointestinal disease. The correlations between work ability and job stress showed statistical significance in job demand and social support(p<0.05). The result of this study could be useful to manage the work ability of aging worker and the job stress in industry.

• 한국철도학회:학술대회논문집
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• 한국철도학회 2009년도 춘계학술대회 논문집
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• pp.1431-1440
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• 2009

A subway in Seoul has had a major role of public transportation after the opening of Seoul Subway Line 1 on August 15, 1974 and it has reached 34.7% of the transportation of Seoul citizens. The extended length of the subway system suppled with DC power in Korea is about 500km. In this system, the devices which are proper for regenerative power system are being required because of changeover from old braking and ATS signal system to regenerative braking and ATO signal system. In this paper, we reviewed the safety standards for the insulated hangers in overhead contact line. These hangers which have depended on foreign imports are being developed in Korea considering ease of demand and supply and economic effects.

• 한국콘크리트학회:학술대회논문집
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• 한국콘크리트학회 2006년도 추계 학술발표회 논문집
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• pp.593-596
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• 2006

Recently, as it has greatly increased the demand on the serviceability of subway, cable tunnel, the stability of the tunnel structures has been attracting the concern of engineers and researchers. The purpose of this study is to idently the various characteristics of lining concrete in subway structures. The nondestructive technique such as the surface hardness method and the extend of carbonation by phenolphthalein indicator and chemical analysis due to XRD are considered. Also, the concrete core was cut in three pieces per tunnel for the exact evaluation of strength.

• 조명전기설비학회논문지
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• 제28권6호
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• pp.85-90
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• 2014

This paper shows a reasonable demand power, that was made by the systematic and statistical way considering actual conditions, such as investigated transformer capacity and peak power for the last 6 years of subway substation customer as to AMR. In this dissertation, it is necessary to analyze the key features and general trend from the investigated data. It made an analysis of the feature parameters, such as average, standard deviation, median, maximum, minimum and thus it was carried by the linear and nonlinear regression analysis. And we studied on the application of a BESS. Analysis showed that the revulsion of capital is about 3 years and 4 months.

• 기술사
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• 제42권3호
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• pp.41-46
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• 2009

A new subway, line 9 linking Western and Eastern Seoul began its services for citizens between Gimpo airport and Gangnam area within 30 minutes by express transit service. Seoul Metro Line 9 Corporation plans to operate both local transit service which will stop at every station, and express transit service that will stop at several key stations including junctions. The passengers on line 9 will be able to transfer to lines 2, 3, 5, 8, Bundang and Incheon International Airport. The Line 9 is expected to disperse the demand for line 2, having the most number of subway users, and will provide passengers with less crowded travel. The new line will also help residents in southern Seoul outskirts and Gyeonggi provincial cities including Bundang vicinity, and Gangdong area commuters get better access to Gimpo and incheon Airports. The Corporation expects to transfer 560,000 passengers daily by the subway line 9. Seoul Development Institute conducted network reshuffle study for Seoul Metro system to sort out congestion problem due to its irrational line alignments and inconvenient transfer. Among several candidate plans of network reshuffling, the direct connection of line 9 with line 5 was chosen as a pilot study. The study found that direct connection of the 2 lines is essential for enhancing transit utility and reducing automobile commuters.

• 한국산학기술학회논문지
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• 제11권12호
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• pp.5191-5198
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• 2010

지하철 이용수요와 토지이용, 개발밀도, 환승교통체계, 접근성과 같은 다양한 역세권 특성의 관계를 규명하기 위한 많은 연구들이 추진되어 왔으나, 역세권내 보행 가로망 구조와 지하철 이용수요간의 관계에 관한 분석은 미비한 실정이다. 본 연구는 부산광역시 79개 지하철 역세권내 가로망의 구조를 공간구문론(Space syntax)을 이용하여 평가하였으며, 역세권내 가로망 구조의 접근성을 포함한 다양한 역세권 특성이 지하철 이용수요에 미치는 영향을 실증분석을 하였다. 분석결과 역세권 가로망 구조를 대변할 수 있는 공간지표인 통합도, 연결도, 명료도 중 역세권 가로망의 접근 편의성을 나타내는 통합도가 높을수록 지하철 이용수요가 증가하는 것으로 나타났다. 또한 역세권 토지이용형태와 개발밀도를 각각 반영하는 집객시설 집중도와 용적률이 높을수록 지하철 이용수요가 증가하는 것으로 나타났다. 따라서 부산광역시의 지하철 역세권 구조를 대중교통 중심의 개발 체계로 개선하기 위해서는 역세권내 보행가로의 접근성을 향상시킬 수 있는 가로 설계와 통행 목적성이 강한 도시시설물을 압축 고밀의 건축물에 조성하기 위한 노력들이 추진되어야 할 것으로 판단된다.

• 한국ITS학회 논문지
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• 제21권6호
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• pp.146-164
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• 2022

최근 정부에서는 수도권 주요거점을 30분대에 연결하기 위해 광역급행철도 건설을 추진하고 있으며, 광역급행철도의 정거장은 대부분 기존 노선과 환승역으로 연결되어 환승에 대한 중요성이 증가하고 있다. 환승저항이 경로선택에 미치는 영향에 관한 많은 연구가 이루어져 왔으나, 대부분 일반 지하철을 대상으로 하여 광역급행철도의 환승행태에 관한 연구는 전무한 실정이다. 이에 본 연구에서는 수도권의 대표적 급행노선인 신분당선을 대상으로 환승행태 분석을 수행하였다. 통행량 집중정도와 요금지불 유무에 따른 환승행태 분석을 위해 요일, 시간대, 이용자 특성에 따라 데이터를 구분하여 경로선택모형을 구축하였다. 분석 결과, 광역급행철도 이용자는 환승이동시간에 비해 환승대기시간에 큰 저항을 가지며, 특히 첨두시간대에는 환승대기시간의 차내시간 한계대체율(EIVM)은 3.51배로 나타났다. 본 연구에서 광역급행철도 환승 1회당 EIVM은 2.6분으로 분석되었으며, 일반 지하철을 대상으로 한 선행연구의 결과에 비해 현저히 낮은 값이다. 이는 일반지하철과 광역급행철도의 환승저항에 차이가 존재하며, 지하철 교통수요 예측 시 일반지하철과 광역급행철도 환승페널티를 차등 적용할 필요성이 있음을 시사한다.

• 한국철도학회:학술대회논문집
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• 한국철도학회 2008년도 춘계학술대회 논문집
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• pp.1407-1415
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• 2008

Recently, there has been growing interest in Gyongin Line demand estimation, because SMRT(Seoul Metropolitan Rapid Transit Corporation) Line 7 will be extended west by 9.8km from Onsu to meet the Gyongin Line at Bupyeong-gu Office. This study was designed to estimate the change of traffic demand in Gyongin Line before and after the completion year 2011, also provide against the economic loss caused by the derived demand from Gyongin Line to SMRT Line 7. In this paper we give preliminary results for the strategic plans for traffic demand estimation and train operating plan in Gyongin Line by analyzing transport performance of Seoul metropolitan subway, and an additional study on the transportation market and the urban development plan is needed for more accurate results.

• 한국철도학회:학술대회논문집
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• 한국철도학회 2011년도 춘계학술대회 논문집
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• pp.745-752
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• 2011

Light Rail Vehicle(LRT) is "New Transit System" that has transportation capacity as well as physical size of vehicle is in-between bus and subway. The demand of LRT system is increasing rapidly; both domestically and internationally. Reason being is that it is more economical and eco-friendly compare to existing heavy rail vehicle. Especially, Busan Subway Line 4 K-AGT (Rubber-tired LRT) being the first of its kind to start revenue service in Korea, it is very much likely that application of its demand will continue to increase. Considering its trend, study to reduce implementation cost of LRT is being pursued in many different aspects; reducing construction cost is one that aspect. In this study, on-site application of 'Up-Down Turnout System' implementation research has been carried out which can replace existing 'Left-Right Turnout System'. When safety of its type gets verified, application of this system to line which intends to use K-AGT, Shin-Lim Line and Dong-Book Line, expects to save its construction cost. This thesis paper reports ongoing research of AGT 'Up-Down Turnout System' development and main component design factors, fundamental principle, performance test result.

• 한국ITS학회 논문지
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• 제18권5호
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• pp.49-63
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• 2019

지하철 승강장의 혼잡도 관리는 열차지연방지, 승객안전 등의 서비스수준 향상을 위해 중요하다. 승강장 혼잡개선정책을 효과적으로 수립하기 위해서는 혼잡수준을 정확하게 추정하는 방안이 필요하다. 현재 지하철 승강장 혼잡도는 1-2년 주기의 특정 장소 및 시간에 계수방법(Hand Count)로 측정되어 시공간적 제약이 존재한다. 한편 스마트카드자료는 매일 실시간 생성되는 빅데이터 자료로서 승강장혼잡 추정을 위한 기초자료로서 적합하다. 본 연구는 카드자료를 승강장 혼잡도를 동적으로 추정하는 모형을 제안한다. 연구는 우선 혼잡도를 지하철 네트워크를 동적으로 이동하는 승객이 승강장에 집중하는 수요개념으로 정의한다. 이를 위해 지하철 네트워크에서 개별승객이 동적으로 이동하는 궤적을 모형을 통하여 파악한다. 또한 지하철승강장에 집중 및 분산되는 승객흐름을 1분 단위로 산정한다. 마지막으로 승강장구조별 단위 실용대기면적에 따른 승강장 혼잡도를 계산한다.