BIM 설계에서 라이브러리의 구축 및 활용은 매우 중요하다. 기존 컨텐츠의 재활용이 가능하므로, 설계를 보다 효과적이 고 효율적으로 진행할 수 있다. 건축분야와 달리 토목분야, 특히 철도시설분야에서는 라이브러리의 구축 및 표준화가 미진하 다. 따라서 본 연구에서는 철도시설분야에 3차원 객체 라이브러리를 구축하고 표준화하고자 한다. 철도시설물 분류체계 및 관련도면을 수집 및 분석한다. 분석된 표준도면의 항목과 분류체계 항목을 매칭하였다. 각 항목별로 라이브러리가 필요한지 여부와 그럴 경우 어떤 소프트웨어가 적절한지를 검토하였다. 사용가능한 소프트웨어는 주로 Civil 3D와 Revit 등으로 나타 났다. 향후 이를 바탕으로 철도인프라 3차원 라이브러리의 속성 항목 및 명세서를 설계하고 라이브러리를 구축할 예정이다.

In this paper, the effectiveness of the geogrid for reinforcing the trackbed is evaluated via numerical analysis. The finite element analysis is performed for the numerical analysis tool. In the study, the effect of the geogrid on the bearing strength of trackbed is investigated. Two different track systems including the conventional ballasted track and the asphalt underlayment track are adopted in the comparison study. The results show that the conventional ballasted track exhibited better effectiveness than the asphalt underlayment track. Also, better effectiveness of geogrid can be achieved by installing at one third depth of ballast layer from the bottom.

railroad has a benefit of the mass transportation of a passenger and cargo, but just a time of accident could cause a huge loss of a human life and property. Especially, a typhoon and a localized torrential downpour usually happened in summer season have caused average 38.29 times of the missing roadbed which support the railroad in recent 7 years. If a train would pass on this railroad which the roadbed was missed, there could be a huge accident and many people will die. But, the security issue is not satisfied because the method of sensing the missing roadbed is depending solely on the naked eye inspection by a person in charge. So, in this study, I would like to suggest the missing roadbed real-time sensing and train operation system to reduce the possibility of the railroad accident by controlling the operation of train when the missing roadbed condition would be sensed in the real-time system.

Recently, many concrete slab tracks have been adopted in high-speed railway. However, it is vulnerable to roadbed settlement compared to gravel tracks. Therefore, it was necessary to evaluate the long-term performance about roadbed and track of the concrete slab track. In this paper, the performance of track and roadbed is evaluated using long-term high-speed rail data. The measurement items are the Wheel load, Lateral load, Acceleration, Road pressure. The measurement period is from the beginning of construction to three years after opening. For the measurement method, a representative value of the measurement data was selected and compared with the reference value.

In this study, it explains briefly the test procedure for evaluating the performance of roadbed in test-bed section of Honam high-speed railway.

To evaluate residual settlement of the high-speed railway trackbed, it is hard to apply immediately settlement analysis because in-situ ground has additional creep or secondary consolidation behavior. To select the settlement analysis method, this study compared measurement data with hyperbolic, Asaoka, Hoshino method result. All residual settlement analysis method has a tendency to be underestimated because of in-situ creep behavior, however all the method are reliable because R2 is high(over 0.94) and RMSE(Root Mean Square Error) is low. The additional measurement data comparison shows that hyberbolic method is the most appropriate method with high accuracy and application.

최근 저탄소 녹색성장이 대두되면서 정시적이고 안정적인 수송체제로서 철도의 관심이 고조되고 고속철도 및 신선철도 등 철도의 건설이 지속적으로 진행되고 있으며 이에 따라 연약지반 위에 철도노반을 건설하는 사례가 증가하고 있다. 본 연구에서는 부전-마산 복선전철사업 중 연약지반 상에 경량기포콘크리트를 이용한 piled-raft 공법의 철도노반 적용성에 관하여 실내실험 및 수치해석을 통하여 검증하였다. 수치해석 결과 압축강도 7MPa, 인장강도 0.35MPa, 휨강도 3.2MPa의 결과를 얻었으며, 말뚝간격 2.5D, 3.5D에 따라서 1.1배 차이가 나타났다. 경량기포콘크리트를 이용한 piled-raft 공법을 철도노반에 적용할 경우 충분한 안정성을 확보할 수 있었고, 말뚝간격은 3.5D로 시공할 경우 충분한 안정성 및 경제성을 확보할 수 있었다.