• Title/Summary/Keyword: 지하철구조물

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Evaluation of subway-induced vibration in building using sub-structuring method (Sub-structuring 기법을 이용한 지하철 인접 구조물의 진동 예측에 관한 연구)

  • Kang, Deok-Shing;Kong, Boo-Seong;Kim, Hyo-Beom;Jeong, Min-Ki
    • Proceedings of the Korean Society for Noise and Vibration Engineering Conference
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    • 2014.10a
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    • pp.635-635
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    • 2014
  • 최근 지하철 인접 부지에 고층 주거 시설이 입지함에 따라 지하철 통행시의 소음 및 진동관련 민원이 증가하고 있는 추세이다. 따라서, 지하철 인접에 위치하는 구조물의 경우 계획단계에서부터 지하철로 인한 소음 및 진동 문제를 예측하고 평가하는 과정이 필수적이다. 건물이 시공되기 전 지하철 통행으로 인하여 건물에 유입되는 진동을 예측 및 평가하기 위해서는 해석적 방법으로 접근해야 하며, 본 연구에서는 sub-structuring method를 활용한 지하철 진동 해석 방법과 실제 구조물에 적용한 사례를 제시한다.

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지하철 정거장 균열발생 원인 분석

  • 김학수
    • Proceedings of the Korean Institute of Industrial Safety Conference
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    • 1998.11a
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    • pp.141-145
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    • 1998
  • 현재 서울을 비롯한 5대 광역시에 지하철이 계획, 시공되고 있다. 이와 같은 지하철은 많은 사람들이 이용하는 대중교통 수단이므로 설계 시 작용하는 하중조건을 모두 고려하여 설계를 하고 있지만 Box형으로 시공된 지하철 구조물의 본선 및 정거장에 대해 점검한 보고서를 참고하면 본선보다는 정거장에서 많은 균열이 발생되고 있다. 따라서 본 논문에서는 Box형으로 시공된 정거장 구조물에 대하여 균열이 발생된 형태와 원인을 연구하여 추후 시공하고자 하는 정거장구조물에 대해 균열발생 억제방안을 도출하고자 한다. (중략)

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Excavation Design and Vibration Analysis for the Crossing Under a Railway Station (정거장 구조물 횡단 굴착 설계 및 진동 해석)

  • ;;Reijo Riekkola
    • Proceedings of the Computational Structural Engineering Institute Conference
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    • 1998.10a
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    • pp.505-512
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    • 1998
  • 지하철과 같은 지하구조물 설계시 기존 구조물 지하를 관통하는 경우가 있다. 본 논문은 기존 역사의 바닥슬래브 밑에 새로운 지하철용 박스 구조물 상부 슬래브가 위치하게 되는 특별한 경우의 굴착 방법을 제시하고 제시된 굴착방법이 상부 구조물에 어떤 영향을 미치는지를 FLAC을 이용하여 검토해 본 것이다. 기존 구조물이 위치하고 있는 지반이 경암인 경우 발파가 주의 깊게 설계되고 시행된다면 발파로 인한 상부 구조의 진동 영향은 충분히 제어할 수 있는 수준으로 예상되었다.

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A Case Study on the Effects on Underground Structure due to Changes in the Groundwater Level and Ground Stress (지반응력 및 지하수위 변화가 지하철구조물 안정성에 미치는 영향 사례연구)

  • Chung, Jeeseung;Lee, Sungil;Lee, Kyuyoung;Jung, Haewook;Kim, Hongjoo
    • Journal of the Korean GEO-environmental Society
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    • v.16 no.9
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    • pp.13-21
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    • 2015
  • Recently, land subsidence and sinkhole are generated due to a change in the groundwater level in the city. For this reason, the necessity for management of stable underground water level is on the rise. In this study, it was conducted for the underground structure that passes through the lower of bus transfer center construction site to examine the influence on the stability for underground structures to changes in the groundwater level and effective stress, the coupled finite element analysis and structural analyses were performed to evaluate stability for underground structure. It is to secure stability for underground structures according to underground water level declines. In this way, effective construction management will be made by previewing and forecasting the influence on the ground behavior and adjacent structures due to changes in the groundwater level.

A Study on the Management of Subway Structure as an Underground Facility (지하 시설물로서의 지하철 구조물 관리 방안에 관한 연구)

  • 김충평;김감래
    • Journal of the Korean Society of Surveying, Geodesy, Photogrammetry and Cartography
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    • v.15 no.1
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    • pp.21-28
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    • 1997
  • Since beginning of subway construction in 1974, for supplying the demand for increasing urban traffic and solving the traffic jam due to expansion of society and elevation of an individual income, the $1^{st}\;and\;2^{nd}$ construction have been almost done and $3^{rd}$ has been driving forward. However, according to an increment of com-mon usage with the passage of time, structures are superannuated and the amount of improvement and repairs keeps on increasing continuous. And many problems are taking place at underground space because of new constructions for underground facilities such as urban gas, electric power, waterworks, and sewerage. In consequence. The consideration of a counterplan for safety is required deeply This study analyzed problems on maintenance of structure about $1^{st}$ class subway, and will present means that a manage civil structures scientifically and systematically by using GSIS concept that imported into several organizations for facility management recently as making digital graphic elements and historic data into a database rather than using an old method - documents and paper drawings.

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Dynamic Response of Building Structures Induced by Subway Operation (지하철 진동에 의한 건축구조물의 진동특성)

  • 김희철;이동근;민경원
    • Computational Structural Engineering
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    • v.8 no.1
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    • pp.95-106
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    • 1995
  • Noise and vibration induced by subway operation are one of the major factor that annoy residents living near the subway tracks. In general, lateral vibration is the major concern when we are considering vibration of a building. However, the vertical vibration is the major concern in considering the vibration induced by the subway operation. Analysis model for the vertical vibration of the structure should consider the effect of beam vibration. Thus, the same model used for the lateral vibration analysis can not be used for an analysis of vertical vibration of the structure. Appropriate analysis model which can consider the inertia force of the beam is necessary when analyzing a structure for the vertical vibration. Modeling technique for the vertical vibration analysis of structures has been studied on this paper. It is recommended to use one or more elements for columns and to use two or more elements for beams when analyzing structures for vertical vibration induced by subway operation.

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Structure movement-coping Waterproofing technology application for Railroad facilities (철도시설에 있어서의 구조물 거동대응형 방수기술의 적용)

  • Cho, Il-Kyu;Lee, Jong-Yong;Oh, Sang-Keun
    • Proceedings of the KSR Conference
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    • 2010.06a
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    • pp.1964-1969
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    • 2010
  • Recently, as construction market scale is getting bigger and transportation industry is developing, the underground structure construction such as subway, tunnel (excavation box) or shield tunnel structure is becoming more diverse, and its demand is gradually increasing. However, for the concrete structures constructed underground, the water leakage is occurred due to the expansion joint and construction joint, or movement, uneven settlement, excessive load and vibration during application causing cracks. Many waterproofing method and materials are used in jobsites, but areas such as underground railroad and subway that has movement and vibration at all times, the ability of waterproofing layer is declined causing repetitive water leakage due to crack, erosion and separation, which is a vicious cycle. Therefore, this study evaluates the responsiveness to a movement for adhesive/flexible waterproofing material that can cope with the vibration and the movement of the structure. Also to recommend a waterproofing technology that can cope with structure movement through examples of actual jobsite applications such as subway and tunnel where there are constant movement and vibration.

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Evaluation of Structural Stability of Tunnel due to Adjacent Excavation on Urban Transit (도시철도 인접굴착공사에 따른 터널구조물의 구조 안정성 평가)

  • Choi, Jung-Youl;Lee, Ho-hyun;Kang, You-Song;Chung, Jee-Seung
    • The Journal of the Convergence on Culture Technology
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    • v.6 no.2
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    • pp.503-508
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    • 2020
  • The three-dimensional precision numerical analysis was performed using the finite element model applied with the railway track model consisting of rails, As a result of analyzing the track deformation level of the existing tunnel due to the excavation work adjacent to the urban transit, it was found that the evaluation criteria (allowed values) of conventional railways lines were satisfied. Based on the numerical analysis, it was analyzed that the results of the prediction of the tunnel structural stability of due to the excavation work and the level of the tunnel deformation occurring at the actual site could be approximated as closely as possible.

The Effect of Vibration of Subway on Earth & Structures in the Region of Subway (지하철 진동이 주변지반 및 인접구조물에 미치는 영향)

  • Kang, Ho Jung;Oh, Jae Eung;Chun, Byung Sik
    • KSCE Journal of Civil and Environmental Engineering Research
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    • v.7 no.2
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    • pp.1-8
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    • 1987
  • Recently, as subway traffic have been increased, vibration of each parts of subway influence on structures above subway tunnel. This paper presents a new method to reduce which was generated by subway traffic. By comparing directional coherence relationship of X, Y, Z-axis and vibrational coherence relationship of spherical signal which was unified by three directional signals, effective vibration diminishing method was proposed. It can be found that locomotive vibration(specially 1-2Hz) have the worst effect on the vibration of structures and the vibration of subway box ranked 2nd, the vibration of earth ranked 3rd.

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Study on Establishing Comprehensive Management Measures to Ensure Stability of Existing Metro when Constructing Ground Structures Adjacent to Subway (지하철 인접 지상구조물 설치시 기존 지하철 안정성 확보 위한 종합관리대책 수립 연구)

  • Jae-Hong Lim;Guk-Hwan Cho
    • Tunnel and Underground Space
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    • v.34 no.3
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    • pp.196-207
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    • 2024
  • In this study, a comprehensive management plan was proposed to ensure the stability of the existing subway when constructing ground structures adjacent to the subway. In the first step, the measurement inspection cycle is selected through proximity evaluation, in the second step, the stability of existing subway and station structures such as displacement and stress is reviewed through 3D numerical analysis considering the construction stage and groundwater influence, and in the third stage, the safety of train operation was reviewed by examining the track stability, and based on the numerical analysis results in the fourth stage, the displacement concentration section was selected as an intensive management section and it was proposed that intensive measurement management be performed.