• Proceedings of the Korean Society for Noise and Vibration Engineering Conference
• /
• 2014.10a
• /
• pp.635-635
• /
• 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.

• Proceedings of the Korean Institute of Industrial Safety Conference
• /
• 1998.11a
• /
• pp.141-145
• /
• 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)

• Journal of the Korean Society of Surveying, Geodesy, Photogrammetry and Cartography
• /
• v.15 no.1
• /
• pp.21-28
• /
• 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.

• Proceedings of the Computational Structural Engineering Institute Conference
• /
• 1998.10a
• /
• pp.505-512
• /
• 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.

• KSCE Journal of Civil and Environmental Engineering Research
• /
• v.7 no.2
• /
• pp.1-8
• /
• 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.

• Tunnel and Underground Space
• /
• v.34 no.3
• /
• pp.196-207
• /
• 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.

• Proceedings of the KSR Conference
• /
• 2010.06a
• /
• pp.1964-1969
• /
• 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.

• Computational Structural Engineering
• /
• v.8 no.1
• /
• pp.95-106
• /
• 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.

• The Journal of the Convergence on Culture Technology
• /
• v.6 no.2
• /
• pp.503-508
• /
• 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.

• Journal of the Korean GEO-environmental Society
• /
• v.16 no.9
• /
• pp.13-21
• /
• 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.