• Title/Summary/Keyword: 철도건설공사

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The Improvement Plan on Fare and Ticketing System of Seoul Metropolitan Subway Considering Construction and Operational Costs (건설.운영비를 고려한 수도권 전철의 운임체계 및 승차권제도 개선방안)

  • Lee, Tai-Sik;Ryu, Jong-Won;Chung, Chul;Lee, Dong-Wook
    • Journal of the Korean Society for Railway
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    • v.10 no.3 s.40
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    • pp.327-336
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    • 2007
  • Operation a subway company requires high amount of early construction, operation and maintenance costs. Seoul Metro, one of the public subway companies in Seoul, Korea, has undergone operational deficit from its establishment, and the main reason is that the early construction and operation cost exceed the total revenue. Therefore, detailed researches on current operation system and possible alternatives are conducted to settle down finance trouble of the company. In particular, problems on operation and ticketing systems are analyzed, and based on that, necessity and detailed plan of railroad pass for one day are introduced and analyzed.

A Study on the Present State of Construction Records Management System through the KS X ISO 15489 : Focused on K Puplic Corporation (KS X ISO 15489를 통해본 건설기록물 관리 현황 - K공단을 중심으로 -)

  • Lee, Hun-Ah
    • Journal of Korean Society of Archives and Records Management
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    • v.7 no.2
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    • pp.113-138
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    • 2007
  • This study was started from a critical mind for the construction records management in South Korea and examined the state of the construction records management system of the Korea Rail Network Authority which is constructing the biggest Express Railway Construction of National Project in Korea. The Methodology of this study is based on the functional requirement of the Records Management International Standard, ISO 15489, which standardized the record management process in the cases of Record Capture, Declaration, Classification, Storage, Access, Tracking and Disposition. In regard to the functional requirements from Capture to Disposition, each level(title) consists of 3 to 4 items, for a total of 22 principles in all. The estimation was created for each of the 22 categories using 4 levels: observance, partial observance, insufficiency and non observance. And pointing out the problem, suggesting the improvements for the Korea Rail Network Authority and structural improvements according to the KS X ISO 15489 principles.

기술현황분석 : 고속 터널굴착과 터널보링머신 동향

  • Jang, Su-Ho;Lee, Yong-Beom
    • 기계와재료
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    • v.21 no.4
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    • pp.96-105
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    • 2010
  • 도로 및 철도는 차량의 고속화와 신속한 물류의 유통을 위해 직선 및 수평화가 절실하게 요구되며, 국내 건설구간의 약 50~70%가 산악지형으로서 터널공사가 필수적으로 요구된다. 국내터널굴착은 주로 발파에 의한 NATM(New Austrian Tunneling Method)으로 공사가 이루어지고 있으나, 굴착효율이 낮으며 안전사고의 위험성이 높다. 해외에서는 급속한 시공을 위하여 TBM(Tunnel Boring Machine)의 적용 사례가 증가하고 있다. 그러나 국내에는 TBM에 대한 연구가 전무한 상태이고, TBM 터널의 설계 시공 기술과 경험이 미흡하다. 최근 대도시의 지하터널과 장대터널의 수요가 증대되어 TBM터널시공 기술과 TBM장비의 국산화가 절실하게 요구되고 있다. 본고에서는 국내외 주요 TBM 시공현황과 전망을 정리하여 TBM 터널 기술의 확보가 매우 시급함을 상기시키고자 하였다.

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Evaluation of Proper Level of the Longitudinal Prestress for the Precast Deck of Railway Bridges Considering the Temperature Change (철도교용 프리케스트 바닥판의 온도변화를 고려한 적정한 종방향 프리스트레스 수준의 산정)

  • Jeon, Se Jin;Kim, Young Jin;Kim, Seong Woon;Kim, Cheol Young
    • KSCE Journal of Civil and Environmental Engineering Research
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    • v.26 no.3D
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    • pp.499-509
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    • 2006
  • Precast concrete deck has many advantages comparing with the in-situ concrete deck, and has been successfully applied to replacement of the deteriorated decks and to the newly constructed highway bridges in domestic region. In order to apply the precast decks into the railway bridges, however, differences of the load characteristics between the highway and the railway should be properly taken into account including the train load, longitudinal force of the continuous welded rail, acceleration or braking force, temperature change and shrinkage. Proper level of the longitudinal prestress of the tendons that can ensure integrity of the transverse joints in the deck system is of a primary importance. To this aim, the longitudinal tensile stresses induced by the design loads are derived using three-dimensional finite element analyses for the frequently adopted PSC composite girder railway bridge. The effect of the temperature change is also investigated considering the design codes and theoretical equations in an in-depth manner. The estimated proper prestress level to counteract those tensile stresses is above 2.4 MPa, which is similar to the case of the highway bridges.

Analysis of Applicability of Rapid Hardening Composite Mat to Railway Sites (초속경 복합매트의 철도현장 적용성 분석)

  • Jang, Seong Min;Yoo, Hyun Sang;Oh, Dong Wook;Batchimeg, Banzragchgarav;Jung, Hyuk Sang
    • KSCE Journal of Civil and Environmental Engineering Research
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    • v.44 no.1
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    • pp.109-116
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    • 2024
  • The Rapid Hardening Composite Mat (RHCM) is a product that improves the initial strength development speed of conventional Geosynthetic Cementitious Composite Mats (GCCM). It offers the advantage of quickly securing sufficient strength in railway slopes with insufficient formation level, and provides benefits such as preventing slope erosion and inhibiting vegetation growth. In this study, an analysis of the practical applicability of RHCM in railway settings was conducted through experimentation. The on-site applicability was assessed by categorizing it into fire resistance, durability, and stability, and conducting combustibility test, ground contact pressure test, and daily displacement analyses. In the case of South Korea, where a significant portion of the territory is composed of forested areas, the prevention of slope fires is imperative. To analyze the fire resistance of RHCM, combustibility tests were conducted as an essential measure. Durability was assessed through ground contact pressure tests to analyze the deformation and potential damage of RHCM caused by the inevitable use of small to medium-sized equipment on the construction surface. Furthermore, daily displacement analysis was conducted to evaluate the structural stability by comparing and analyzing the displacement and behavior occurring during the application of RHCM with railway slope maintenance criteria. As a result of the experiments, the RHCM was analyzed to meet the criteria for heat release rate and gas toxicity. Furthermore, the ground contact pressure was observed to be consistently above 50 kPa during the curing period of 4 to 24 hours under all conditions. Additionally, the daily displacement analyzed through field site experiments ranged from -1.7 mm to 1.01 mm, confirming compliance with the criteria.

Road Optimum Route Selection Technique using Multidimensional Spatial Information (다차원 공간정보를 이용한 최선노선선정 기법 관한 연구)

  • Yeon, Sang-Ho;Lee, Jin-Duk;Lee, Jong-Keuk
    • Proceedings of the Korean Association of Geographic Inforamtion Studies Conference
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    • 2010.06a
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    • pp.149-152
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    • 2010
  • 본 논문은 지구공간에 존재하는 다양한 공간정보를 이용하여 도로 및 철도 계획과 공사를 위한 최적노선을 선정하는 기법에 관한 새로운 연구이다. 사람과 물자를 수송하는데 있어서 가장 기본적인 공공교통시설인 도로 및 철도를 건설하기 위하여 초기에 가장 중요한 결정이 바로 최적노선결정이므로 환경파괴를 최대한으로 감소시키고 그 기능을 충분히 발휘할 수 있도록 대상 지역의 여러 가지 조건을 고려하여 가장 적합한 노선의 위치를 결정하여야 한다. 3차원 지형 환경의 공간영상콘텐츠는 국토계획 및 통신설비계획, 철도건설, 시공, 입체적인 유비쿼터스 도시 구현, 안전 및 방재 등에서 많은 요구와 그 중요성이 크게 부각되고 있다. 현재 지리정보 기반의 2차원적인 지도정보와 시설정보를 다차원의 도시공간으로 재현하기 위하여 기존의 등고선을 이용한 DEM 방식은 많은 한계를 가지고 있으며, 특히, 철도와 같은 노선 폭이 좁고 길이가 길어서 궤적 관리가 어려운 작은 구조물의 경우에는 그 고도모델이 무시되기 쉬우므로, 레이저 측량 기술을 이용한 공간대상물에 대한 높은 정확도 취득이 크게 필요한 실정이다. 본 연구에서는 원격탐사 영상 Data를 중심으로 하는 정사보정하고 이에 매칭 할 수 있는 수치 지도 벡터와의 통합 및 전환으로 다차원 공간에서 건물 모델의 생성과 다양한 활용을 제시하는 것을 연구목적으로 하였고, 연구방법으로는 기존의 이미 취득한 2차원적인 평면사진을 지상 기준점에 의하여 정밀기하보정을 하여 얻은 사진영상자료를 이용하여 3차원 공간정보로 구성하기 위해서는 동일지역에 대한 수준 측량결과인 높이 데이터를 매칭하여야 하므로, 항공기에 탑재한 센서로 모든 대상지에 대한 지형지물의 고밀도의 높이 값을 획득하여 위치보정 작업 후에 3D로 매칭할 수는 방법을 연구하여 실험하도록 하였다 또한 본 연구에서는 연구대상지역의 지형조건, 기존 노선과의 비교, 토지이용, 지형경사, 사면방향, 지가 등을 분석하여 각각의 경중률을 고려한 후 선택된 후보노선들을 비교분석함으로서 최적노선을 선정하고자 하였다.

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Correlation Analysis on the Duration and CO2 Emission Following the Earth-work Equipment Combination (토공장비조합에 따른 공사기간 및 이산화탄소 배출량의 상관성 분석)

  • Kim, Byungsoo
    • KSCE Journal of Civil and Environmental Engineering Research
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    • v.31 no.4D
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    • pp.603-611
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    • 2011
  • After Kyoto Protocol was adopted for green gas reduction, each nations are stepping up efforts to reduce $CO_2$ of a typical green gas. Construction industry also is trying $CO_2$ reduction with the techniques of two types which are software and hardware techniques. The software technique are Passive Design considered green gas emission and the environment impact assessment by LCA. The hardware techniques are adjustment of equipment system and development of eco- friendly material. But, it is nonexistent that a study related to $CO_2$ emission considered detail process in construction industry. This study analyzed the correlation of equipment combination, $CO_2$ emission and duration by calculate $CO_2$ emission follow to equipment combination on earth-work which is the process emitted most $CO_2$ among railway bedding construction.

A Study on Track Deformation Characteristics of Turnout System by Adjacent Excavation Work on Urban Transit (인접굴착공사에 따른 도시철도 분기기 궤도의 변형 특성에 관한 연구)

  • Kim, Hae-Sung;Choi, Jung-Youl;Chung, Jee-Seung
    • The Journal of the Convergence on Culture Technology
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    • v.8 no.5
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    • pp.477-482
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    • 2022
  • The structure of the turnout track is very complex, so it is a facility that is more difficult to maintain and requires detailed management than a general track type. The purpose of this study is to analyze the effect on the deformation of the turnout system of the ground section due to the excavation work adjacent to the serviced urban railways. In this study, based on finite element analysis for each stage of adjacent excavation, the track deformation for each major location of turnout system was analyzed in consideration of the layout of the turnout system installed on the ground section, and the safety and stability was confirmed by comparing it with the track irregularity regulation. As a result of the study, it was found that the major construction stage affecting the track deformation of the turnout system on the ground section was the final stage of excavation. In addition, although the vertical displacement which is a vertical irregularity occurred relatively large, it was analyzed that the horizontal deformation was dominant overall, because of the excavation site is located on the side of the turnout system. In addition, it was analyzed that the amount of displacement at each major location of the turnout system is different, and there is a possibility that there may be a twist irregularity due to the deviation of the track deformation for each location according to the distance from the excavation site. Therefore, it was analyzed that it is necessary to classify and manage the importance of the track deformation of the turnout system of actual operating line, including additional displacement due to adjacent excavation, based on the track irregularity that has occurred at each location where the major deformation characteristics occur.

Design of Simulation Prototype UI for Virtual Reality-based Air Blast and Vibration (가상현실 기반 발파소음 및 진동 시뮬레이션 UI 설계)

  • Lee, Dongyoun;Lee, Sang Gyu;Seo, Myoung Bae
    • Smart Media Journal
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    • v.10 no.4
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    • pp.35-44
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    • 2021
  • Recently, the new subway project called "Great Train Express" is in progress. During the tunnel excavation in the center of city, vibration and noise are generated, which make an uncomfortable effect on nearby residents. In order to prepare for this situation, the construction company generally establishes a noise and vibration management plan at the site from the construction planning stage through consultation with the residents of nearby areas and establishment of countermeasures for complaints raised. However, despite the establishment of a noise and vibration management plan, civil complaints have not been fundamentally resolved due to occurring noise and vibration during the construction in progress. In order to solve this problems, one of the best solution is to provide noise and vibration simulation technology with a high sense of reality and immersion for residents of nearby areas. Considering the ease and convenience of using the system, we intend to develop a UI(User Interface) necessary for the development of a simulation system that can directly experience the air blast and vibration based on virtual reality. The results of this study are expected to contribute to the development of virtual reality-based air blast and vibration simulations in the future.

Implementation and Analysis of Railway Design Model using ei-Rail with Joong-Ang and Seo-Hae Lines (ei-Rail을 활용한 노선설계 모형의 적용 및 중앙선/서해안선 사례분석)

  • Shin, Youngho;Kim, Jeong Hyun;Oh, Jitaek
    • KSCE Journal of Civil and Environmental Engineering Research
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    • v.35 no.2
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    • pp.407-415
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    • 2015
  • The railway route and alignment planning have been executed with a limited number of alternatives based on the site pre-survey and the topographic map. This study developed an intelligent railway alignment planning program (ei-Rail) which can derive all the considerable design alternatives and provide the data for the alternative evaluation such as constructions cost, operation cost, and etc. According to the comparisons with prevailing planned railway projects, the time and cost for planning can be reduced as well as the construction costs. This program may contribute to the development of railway industry by reducing the time and cost for planning as well as the total project cost.