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- W2053457866 abstract "최근 철도주변의 개발이 확대되고 있는 가운데 비개착공법을 이용하여 철도노반하부를 횡단하는 구조물을 시공하는 경우가 불가피하게 증가하고 있다. 현재, 기존선 하부를 횡단하는 구조물을 시공하는 경우 구조물 및 열차주행에 대한 안정성만을 고려하고 있으며, 구조물 주변에 대한 안정성 검토 규정은 미비한 실정이다. 따라서 본 연구에서는 실내모형실험을 통하여 비개착공법시 주변지반의 특성에 대해서 파악하였고, 이를 토대로 3D 이동하중을 고려한 수치해석을 통해 콘크리트도상의 동적 거동특성에 대하여 파악하였다. 변위의 경우 토피고가 낮아짐에 따라 접속부와 구조물과의 변위차이는 크게 나타났다. 응력은 토피고가 3 m일 때는 안전한 것으로 나타났으나 1m, 2m일 경우 허용인장응력을 초과하는 것으로 나타났다. As the development of around railway area, the subsurface construction using non-opencut method under the railway has been recently increased. When the structure under railway is constructed, the track support stiffness of the ground is not considered as an important design factor. In this study, laboratory tests were performed to investigate the ground movement characteristics nearby the subsurface structure. Based on the laboratory test results, 3D numerical analyses were performed to find out the dynamic characteristics of the concrete track. The numerical analyses results showed that displacements above the structure were varied with the soil thickness. When soil thickness is 3m, tensile stress of the results was less than allowable tensile stress. However, when the soil thickness are 1m and 2m, concrete tensile stress on the concrete track exceeds the allowable tensile stress." @default.
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- W2053457866 date "2013-06-30" @default.
- W2053457866 modified "2023-09-26" @default.
- W2053457866 title "Stability of Concrete Track above the Substructure Constructed by Non-opencut Method" @default.
- W2053457866 doi "https://doi.org/10.9798/kosham.2013.13.3.053" @default.
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