Behavior of Geosynthetic Reinforced Wall with Heat Induce Drainage Method During Rainfall

Seung-min Shin; Chun-won Sin; Chung-Sik Yoo

doi:10.12814/jkgss.2016.15.1.011

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2016 Vol.15, Issue 1 Preview Page Next Page

Behavior of Geosynthetic Reinforced Wall with Heat Induce Drainage Method During Rainfall 열유도 토목섬유 배수공법이 적용된 보강토 옹벽의 강우시 거동 특성

30 March 2016. pp. 11-19

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Abstract

This paper presents the results of a scale model test to the effect of heat exchanger drainage method in retaining wall of weathered granite soil. Purpose to rise in the temperature of the heat wires inside the weathered granite soil is preventing the collapse of the retaining wall and drainage smoothly moved to the drainage layer. Especially using a spray gun to simulate the rainfall since the rainfall drainage work is important for the rainfall effect on soil, find the difference about displacement of the retaining wall, change of volume water content, drainage, earth pressure and change in the strain of the geosynthetic was effected to heat exchanger within the soil. The result from applying the heat exchanger method decreased the earth pressure and displacement of the wall and increased drainage of water.

Keywords

Geosynthetic

Reinforced wall

Heat exchanger drainage method

본 논문에서는 실제 보강토 옹벽에서 열유도 배수장치에 의한 영향을 분석하기 위하여 옹벽 형태의 축소모형실험을 진행하였다. 열선의 온도상승으로 인해 화강풍화토 내부의 온도가 상승하며 화강풍화토 내부에 있는 수분을 배수층으로 이동시켜 배수를 원활이 하여 옹벽의 붕괴방지를 위한 목적을 가지고 있다. 특히 강우 시 배수활동이 중요하기 때문에 강우조건을 모사하기위해 워터스프레이건을 이용하여 지반에 강우작용을 모사하였으며 강우에 의한 옹벽 벽체의 변위, 지반내부의 체적함수율 변화, 강우배수량, 벽체의 토압의 변화 그리고 보강재의 변형률의 변화를 분석하여 지반 내 열유도 배수장치의 영향으로 인한 차이를 확인하였다. 그 결과 열유도 배수장치를 적용한 경우 배수량이 증가하며 그로인해 토압이 감소하며 벽체의 변위가 감소하는 것으로 나타났다.

References

1.Liu, C., Shi, B., Shao, Y., and Tang, C., (2013), “Experimental and numerical investigation of the effect of the urban heat island on slope stability.”, Bulletin of Engineering Geology and the Environment, Vol.72, Issue.3, pp.303-310.

2.McCartney, J. S., LaHaise, D., LaHaise, T., and Rosenberg, J. (2010), “Application of geoexchange experience to geothermal foundations.”, Art of Foundation Engineering Practice (GSP 198), pp.411-422.

3.Stewart, M., Coccia, C., and McCartney, J. (2014), “Issues in the Implementation of Sustainable Heat Exchange Technologies in Reinforced, Unsaturated Soil Structures.”, Geo-Congress 2014 Technical Papers, pp.4066-4075.

4.Yoo, C. S. and Jang, D. K. (2013), “Effect of Cycles of Wetting and Drying on the Behavior of Retaining Walls Using Reduced-Scale Model Tests”, JOURNAL OF THE KOREAN GEOTECHNICAL SOCIETY, Vol.29, No.12, pp.25-34.

Information

Publisher :Korean Geosythetics Society
Publisher(Ko) :한국지반신소재학회
Journal Title :Journal of the Korean Geosynthetics Society
Journal Title(Ko) :한국지반신소재학회 논문집
Volume : 15
No :1
Pages :11-19
Received Date : 2016-01-13
Revised Date : 2016-03-15
Accepted Date : 2016-03-16
DOI :https://doi.org/10.12814/jkgss.2016.15.1.011

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

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