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토목섬유 보강재로 보강된 철도 노반의 반복하중 하중지지력 연구
홍승록(Seungrok Hong),조윤규(Yungyu Cho),최정혁(Jeonghyeok Choi),정용준(Yongjun Jeong),유충식(Chungsik Yoo) 한국지반신소재학회 2013 한국지반신소재학회 학술발표회 Vol.2013 No.11
This paper we studied the characteristics of bearing capacity of railway reinforced with geosynthetic against repetitive loading of train. The railway that was based on the porous pavement substructure ground and reinforced with geosynthetic was copied. In order to analyze load carrying capacity of geosynthetic, we have had 3cases experiments - in the first case, the ground was non reinforced, second case was reinforced geocell and last case was reinforced geogrid - and all of them were reduced-scale laboratory tests. The results of the analyses indicated that the bearing capacity of the reinforced geogrid increases much more than the reinforced geocell. Residual deformation of the initial cyclic loadwas larger than the secondary cyclic loads.
홍승록(Seungrok Hong),최진욱(Jinwook Choi),유충식(Chungsik Yoo),이대영(Daeyoung Lee),이수형(Suhyung Lee),유인균(Inkyoon Yoo) 한국지반신소재학회 2013 한국지반신소재학회 논문집 Vol.12 No.3
본 논문에서는 투수성 포장 하부구조의 지반에 지오셀 보강에 따른 거동특성을 다루었다. 지오셀을 이용한 포장구조체의 하중지지력 증가효과를 고찰하기 위하여 지오셀 결합부의 유형, 벽 두께, 직경을 변화시켜가며 총 9가지의 실험 케이스의 실내 축소모형실험을 진행하여 무보강 투수성 포장에 비해 지오셀로 보강된 포장 하부구조에서 더 큰 지지력이 발현 되는 것으로 나타났고 지오셀의 단면 형태의 관계 없이 거의 일정한 하중 지지력을 보이는 것으로 나타났다. 또한 지오셀 속채움시 지오셀의 형상은 직경 30cm, 두께 1.8mm에서 가장 지지 효과가 크게 나타나는 것을 알 수 있었다. This paper presents the results of a laboratory investigation of the porous pavement substructure effect when reinforced with geocell. In order to analyze load carrying capacity of Geocell, a series of 9 reduced-scale laboratory tests was performed, changing the type, thickness, diameter of Geocell. The results of the analyses indicated that the bearing capacity of the reinforced Geocell increases much more than the non-reinforced Geocell and load carrying capacity was considered to be insignificant according to the type of Geocell. It was also found that the most supportive effects appeared as 30 cm in diameter and 1.8mm in thickness.
축소 모형실험을 이용한 지오셀의 형상 변화에 따른 지지력 특성 분석 연구
홍승록(Seungrok Hong),최진욱(Jinwook Choi),유충식(Chungsik Yoo) 한국지반신소재학회 2012 한국지반신소재학회 학술발표회 Vol.2012 No.11
This paper presents the results of a laboratory investigation into the study on the effect of geometrical variation of geocells on their load carrying capacity. A number of geocells with different geomtries were load tested on a road bed which replicated the porous pavement substructure. The results of the analyses indicated that the load carrying capacity of a geocell is not significantly affected by its geometric characteristics while the cell diameter has more pronounced effect on the load carrying capacity.
토목섬유 보강재로 보강된 철도 노반의 반복하중 하중지지력 연구
홍승록(SeungRok Hong),조윤규(Yungyu Cho),최정혁(JungHyuk Choi),정용준(Yongjun Jeong),유충식(ChungSik Yoo) 한국지반신소재학회 2013 한국지반신소재학회 논문집 Vol.12 No.4
본 논문에서는 고속철도의 반복하중에 의한 토목섬유로 보강된 철도노반의 지지력 특성을 다루었다. 토목섬유로 보강된 철도노반은 투수성 포장 하부구조의 지반에 지오셀 및 지오그리드 보강을 하여 모사하였다. 포장구조체의 하중지지력 증가효과를 고찰하기 위하여 무보강상태의 지반과 지오셀 보강의 경우, 3층 지오그리드 보강인 경우에 대하여 총 3가지 실험 케이스의 실내 축소모형실험을 진행하였으며 잔류변형량은 초기 동적하중이 작용하는 경우가 2차 동적하중 작용시 보다 크게 나타났다. 지오셀 보강보다 3층 지오그리드 보강된 포장 하부구조에서 더 큰 지지력이 발현 되는 것으로 나타났다. This paper studied the characteristics of bearing capacity of railway reinforced with geosynthetic against repetitive loading of train. The railway that was based on the porous pavement substructure ground and reinforced with geosynthetic was copied. In order to analyze load carrying capacity of geosynthetic, we have had 3cases experiments - in the first case, the ground was non reinforced, second case was reinforced geocell and last case was reinforced geogrid - and all of them were reduced-scale laboratory tests. The results of the analyses indicated that the bearing capacity of the reinforced geogrid increases much more than the reinforced geocell. Residual deformation of the initial cyclic loadwas larger than the secondary cyclic loads.