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신은철(Shin Eun-Chul),이명호(Lee Myeng-Ho),최진영(Choi Jin-Young) 한국철도학회 2002 한국철도학회 학술발표대회논문집 Vol.- No.-
The heavy downpour caused by unusual weather has destroyed a railroad bed. It caused a large amount of soil loss due to soil erosion. Hence, there is necessary to rehabilitate the destructed railroad bed as quickly as possible. Application of geotextile bag can standardize the rehabilitation process. Geotextile bag method can be more stable, faster, and more economical. In this study, the stress to geotextile bag was estimated to select the appropriate geotextile material. Geotechnical characteristics of geotextile were also determined.
철도노반 긴급복구를 위한 토목섬유 컨테이너의 파괴형태 분석
신은철(Shin Eun-Chul),이명호(Lee Myeng-Ho),이준철(Lee Jun-Chul) 한국철도학회 2002 한국철도학회 학술발표대회논문집 Vol.- No.-
This study was under taken as an analysis of failure mode in a railroad bed reconstructed with miniaturized Geotextile Container after being destroyed by heavy rain. It asesses the practical use of the bag shaped Geotextile Container method in the rehabilitation of destroyed roadbeds. The failure mode was assessed using the laboratory model tests to determine the following criteria: Strain of Geotextile Container, Vertical & Horizontal displacements of Geotextile Container layer, and the transmitting load effects due to the applied load. The Geotextile Container layer was failed as a Block Failure type, although there was some variation in the results between the saturated and unsaturated conditions. The main failure was caused by the reduction of the interface friction between Geotextile Containers. The result of this mobilizes the significant horizontal displacement and the ultimate failure of the Geotextile Container layer. The strain on the wet Geotextile Container was occurred about two times greater than that of dry condition.