• 한국철도학회:학술대회논문집
• /
• 한국철도학회 2008년도 춘계학술대회 논문집
• /
• pp.1689-1694
• /
• 2008

Recently, the development of the paved track is required as a low-maintenance of conventional line. The main reason is that the line capacity and bearing of track are increased progressively. The important factors of paved track are stability and applicability. To be based on this subject, cement mortar pouring type paved track is developed. The paved track is a kind of concrete track using the prepacked concrete technique. The most important thing to design the paved track is to optimize the track structure and materials considering various conditions. Until now, the paved track is verified a various material and structure test. In this paper, it is introduce to the test construction at the urban subway main line. The test construction is completed at Dec. 2007. A major object and substance is a guarantee of construction progress on main line, track performance, construction technique for curved section, transition zone and winter season, recycling the used ballast and application of specific sleeper for sharp curved section.

• 한국지반공학회:학술대회논문집
• /
• 한국지반공학회 2002년도 봄 학술발표회 논문집
• /
• pp.679-686
• /
• 2002

A substantial portion of the cost of a tunnelling project in urban environments is, therefore, devoted to prevent ground movement. Therefore, prediction of ground movements and assessment of risk of damage to adjacent buildings has become an essential part of the planning, design, and construction of a tunnelling project in the urban environments. An internet-based tunnelling-induced ground movements and building damage assessment system (IT-TURIMS) was developed and implemented to Daegu Metro Subway Line tunnel construction project in Korea. This paper describes the concept and implementation of IT-TURIMS. Practical significance of tunnelling risk assessment is also discussed.

• 한국철도학회논문집
• /
• 제17권6호
• /
• pp.410-414
• /
• 2014

본 연구에서는 도심지 지하철 터널의 콘크리트 라이닝에 계측센서를 설치하여 터널 내부의 온도변화에 따른 콘크리트 라이닝의 거동을 분석하였다. 계측결과, 터널 내부의 온도변화에 따라 콘크리트 라이닝의 응력과 내공변위, 균열이 변화하는 것을 알 수 있었다. 특히 균열의 경우, 온도변화에 따라 수축과 팽창이 이루어지고 있으나 균열의 크기와 상태에 따라 변화의 폭이 다른 것으로 나타났다. 또한 온도변화에 따른 콘크리트 라이닝의 수치해석을 통하여 터널 내부 온도변화에 따른 콘크리트 라이닝 응력과 내공변위의 보정식을 제안하였다. 본 연구 결과는 도심지 지하철 터널 내부의 온도변화에 따른 거동 파악 및 온도변화를 고려한 터널의 유지관리에 크게 활용될 것이다.

• 한국측량학회지
• /
• 제15권1호
• /
• pp.21-28
• /
• 1997

사회의 발전 및 개인 소득 수준의 향상으로 인하여 증가하는 도시 교통 수요의 충족 및 교통난 해소 방안의 일환으로 1974년부터 지하철의 건설이 시작된 이래로 1기 및 2기 지하철의 건설이 완료되어 가고 3기 지하철의 건설이 추진되고 있다. 따라서 기존 건설된 지하철은 공용 년수의 증가로 인하여 구조물이 노후화 되고 있어 이로 인해 개·보수 물량이 지속적으로 증가하고 있고 도시가스, 전력, 상하수도 등 여타 지하 시설물의 개량 및 신규 건설로 인해 지하 공간에서 잦은 문제가 발생하고 있어 이에 대한 안전 대책 마련이 절실히 요구되고 있다. 따라서 본 연구에서는 이미 건설되어 공용중에 있는 1기 지하철을 대상으로 지하철 구조물의 유지보수 상의 문제점을 분석하였다. 그리고 최근 여러 기관에서 시설물의 관리에 도입되고 있는 지형공간정보체계(GSIS)개념을 응용하여 현행문서 및 종이도면 위주의 구조물 유지관리 방법에서 수치화된 도형 요소와 이력 자료를 데이타베이스화 함으로서 지하 시설물로서의 토목 구조물을 보다 체계적이고 과학적으로 관리할 수 있는 방안을 제시하고자 한다.

• 한국철도학회:학술대회논문집
• /
• 한국철도학회 2004년도 추계학술대회 논문집
• /
• pp.1185-1192
• /
• 2004

Recently heavy traffic is getting worse because increasing population of transportation in urban area. In order to solve this problem. subway is realized with high speed, high density, highly efficiency. When fire accident happened in Dae-Gu subway in February 2003, there happened loss of people and lots of damage because of not being able to control even though fire alarm which was set up in the station rang. This thesis has constructed a simulation integrating operation system using a Database construction, operating program analysis in order to build up the most efficient train operation system. The result of simulation integrating operation system with emergency virtual situation like station and train fire, train failure, power line failure, all trains running on the rail were secured safety by train operation control system. With integrating operation of each train control system, train system, power system, machine facility system, the most efficient integrating operation system should have been constructed at the time the subway fire and power failure broke out.

• 한국철도학회:학술대회논문집
• /
• 한국철도학회 2007년도 추계학술대회 논문집
• /
• pp.1105-1114
• /
• 2007

Recently the urban railroad which is under plan and construction in domestic is under consideration Light Rail Transit mostly with the alternative against excess of working expenses of Midium Rail Transit(subway), inefficient transportation problem etc. It come to a conclusion that the application of the light rail transit is proper from reserve feasibility study and approval process of Master plan in Daegu urban railroad Line No.3 Based on hereupon, carried out the detail investigation for optimum system selection which suitable for Daegu urban circumstance in process of master plan can satisfy the working expenses decided in national expenditure support project.

• 한국소음진동공학회논문집
• /
• 제12권7호
• /
• pp.527-533
• /
• 2002

A railway vehicle should be satisfied with the safety criteria and ride comfort of passengers. A bogie of railway vehicle Is composed of many suspension components, such as springs, dampers and etc.. that have an influence on the dynamic behavior of the train wish the wheel/rail profiles and track geometries. Therefore, it Is necessary for engineers to check the Interference between vehicle limit and construction limit with considering the vehicle's behavior, because when the vehicle is running on curved track, it should be have enough clearance from infrastructure for safely, spacially In a subway system. This paper explains the effective method of analysis for vehicle limit considering the vehicle dynamic behavior and reviews the problem of vehicle limit for the Korean Standard Urban Train. The results show that the vehicle limit is over the construction limit when the Korean Standard Urban Train runs on the curved track with 180 m radius of curve.

• 한국지하수토양환경학회지:지하수토양환경
• /
• 제20권3호
• /
• pp.41-50
• /
• 2015

Hydrogeologic environment of the Mega City such as Seoul, suffers from rapid changes caused by urbanization, construction of underground subway or buildings, and contaminant loading by diverse anthropogenic activities. Understanding the present condition of groundwater environment and water budget is necessary to prevent natural and manmade disasters and to prepare for sustainable water resource management of urban environment. In this study, regional groundwater flow and water budget status of Seoul was analyzed using numerical simulation. Modeling result indicated that groundwater level distribution of Seoul generally followed the topography, but the significant decreases in groundwater level were observed around the subway network. Steady-state water balance analysis showed groundwater recharge by rainfall and leakage from the water supply network was about 550,495 m³/day. Surface water inflow and baseflow rate via Han River and major streams accounted for 799,689 m³/day and 1,103,906 m³/day, respectively. Groundwater usage was 60,945 m³/day, and the total groundwater leakage along the subway lines amounted to 114,746 m³/day. Modeling results revealed that the subway could decrease net groundwater baseflow by 40%. Our study result demonstrated that the subway system can have a significant influence on the groundwater environment of Seoul.

• 대한전기학회:학술대회논문집
• /
• 대한전기학회 2007년도 제38회 하계학술대회
• /
• pp.1181-1182
• /
• 2007

Light Rail Transit (LRT) System is an urban transit system which has approximately an intermediate transportation capacity between conventional subway and bus ($5,000{\sim}25,000$ persons per hour and per direction). It is a high-tech system which operational capacity, punctuality and mobility are remarkably improved. There are some types of LRT systems such as monorail, tramway, AGT(Automated Guideway Transit), and so on. The LRT systems have been applied and being operated in about a hundred lines around the world and many projects that apply the LRT systems in Korea are being proceeded and scheduled. For the efficient management, economical construction, and safe operation of various LRT systems, the establishment of national standard is necessary such as vehicle standardized specification, vehicle performance test standard, vehicle safety standard, construction guide, operation regulation, etc. of LRT systems. This paper presents the standard specification of electrical equipment of linear induction motor type light rail vehicle, that is LIM AGT(AGT system propelled with linear induction motor) vehicle. The LIM AGT system has been applied in Japan subway and ART(Advanced Rapid Transit) system of Canada and Yongin LRT is currently under construction.

• 한국철도학회:학술대회논문집
• /
• 한국철도학회 2008년도 추계학술대회 논문집
• /
• pp.441-445
• /
• 2008

경전철은 중전철에 비하여 건설비가 50% 정도 소요되며 친환경적이어서 최근 국내의 많은 지자체에서 여러 가지 형식의 경전철을 계획하고 있으며 일부 건설이 진행중인 곳도 있다. "도시철도법제22조의 2(도시철도차량의안전기준)"에서는 "구조 및 장치가 안전운행에 필요한 기준(구조 및 장치)에 적합하지 아니하면 운행하지 못한다." 도시철도차량안전기준에관한규칙 제3조에는 도시철도의 건설자 또는 운영자가 안전기준에 맞게 차량을 발주하거나 운영하도록 되어있다. 도시철도차량안전기준에관한규칙은 2000년에 제정되어 대구지하철사고이후 화재안전기준등이 강화되어 2004년에 한번 개정이 되었다. 이는 전적으로 중 대형 전동차를 위주로 작성되었다. 완전무인운전을 기본으로 하여 신호장치 등에 대한 안전기준이 다르고 연절형 대차등을 적용 및 축중등에 대한 안전기준 내용등이 달라 국내 경전철과 관련된 많은 기관 등에서 전반적인 개정요구가 많은 실정이다. 본 논문에서는 현재 국내 경전철 차량의 특징 및 개정의 필요성등을 다루어 향후 경전철 관련 안전기준의 개정 방향을 설정하는데 그 목적이 있다.