Behaviour of geogrid reinforced model retaining wall in active failure  state by execution of parallel movement

Kang-Man Lee; Suk-Min Kong; Dae-Young Lee; Yong-Joo Lee

doi:10.12814/jkgss.2015.14.4.117

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2015 Vol.14, Issue 4 Preview Page Next Page

Behaviour of geogrid reinforced model retaining wall in active failure state by execution of parallel movement 병진이동으로 인한 주동파괴 시 지오그리드 보강토 모델벽체의 거동

30 December 2015. pp. 117-127

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Abstract

Recently, there has been a string of negligent accidents for the retaining wall and slope. In order to measure the ground deformation for the MSE wall, the authors carried out the model test to assess behavioral characteristics of geogrid MSE　walls in active failure state with different conditions of geogrid reinforcement. The models are built in the soil container box having dimension, 100 cm long, 90 cm height, and 10 cm wide. The reinforcement used in the model test is geogrid (polyvinyl chloride, PVC). Three geogrids are sized by 30 cm × 60 cm, 30 cm × 70 cm, 30 cm × 80 cm (width × length) respectively. In this study, the laboratory model tests represented for several conditions of the MSE wall, and then its results were compared to 2D FE analysis.

Keywords

Model test

Geogrid

Numerical analysis

Surface settlement

MSE wall

최근 사면 및 흙막이 벽체의 붕괴에 따른 안전사고가 빈번하게 발생함에 따라 보강토 옹벽 공법의 안정성이 사회적인 문제로 대두되고 있다. 본 연구는 모형벽체 시험기를 제작하여 지오그리드 길이와 보강 층수에 따른 주동파괴 시 흙막이 벽체와 지반의 거동특성을 분석하였다. 벽체 시험에 사용된 지오그리드는 각각 30cm × 60cm, 30cm × 70cm, 30cm × 80cm (폭 × 길이)의 크기를 가지며, 일정한 깊이로 설치되었다. 모형벽체 시험은 2장의 동일한 길이의 지오그리드, 2장의 서로 다른 길이의 지오그리드, 4장의 동일한 길이의 지오그리드, 4장의 서로 다른 길이의 지오그리드 총 4가지 case로 나누어 모형시험을 진행하였다. 또한 유한요소 수치해석을 통해 보강방법에 따른 지반의 거동을 예측하였다.

References

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Information

Publisher :Korean Geosythetics Society
Publisher(Ko) :한국지반신소재학회
Journal Title :Journal of the Korean Geosynthetics Society
Journal Title(Ko) :한국지반신소재학회 논문집
Volume : 14
No :4
Pages :117-127
Received Date : 2015-09-02
Revised Date : 2015-12-16
Accepted Date : 2015-12-17
DOI :https://doi.org/10.12814/jkgss.2015.14.4.117

Journal of the Korean Geosynthetics Society ISSN:2508-2876(Print) 2287-9528(Online) 한국지반신소재학회 논문집

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