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2013 Vol.12, Issue 2 Preview Page
Evaluation of PBD as Horizontal Drains of Soilbag Retaining Wall

토낭 보강토 옹벽의 수평 배수재로서 PBD의 적용성 평가

Eun-Chul Shin1
,
Myung-Shin Lee2
,
Sung-Hwan Kim3*
신 은철1
,
이 명신2
,
김 성환3*
1Professor, Dept. of Civil Engineering, The University of Incheon
2Graduate Student, Dept. of Civil Engineering, The University of Incheon
3Graduate Student, Dept. of Civil engineering, The University of Incheon
*교신저자. *Corresponding Author. 
30 June 2013. pp. 35-42
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Abstract

Recently, construction of reinforced earth structure using geosynthetics has been increased because it has advantages such as construction efficient, cost effectiveness and appearance aspect against existing gravity or cantilever retaining wall. However due to the climate change in Korea excessive inflow of ground water and surface water from heavy rainfall could affect the stability of reinforced retaining wall seriously. So the discharge capacity of drains should be evaluated by using experimental method in the design of reinforced earth wall. In this study, instead of concrete block used in most of the retaining wall, eco-friendly porous soilbag was used. This paper describes the test method and result of the laboratory testing for determination of discharge capacity utilizing PBDs.

Keywords
Retaining wall
Soilbag
Discharge capacity
PBDs

흙 구조물의 안정성은 물과 직접적인 관련이 있고, 강우나 침투수에 대한 충분한 대책을 세우지 않는다면 구조물에 큰 피해를 입을 수 있다. 최근 이상기후로 인한 집중호우의 횟수가 잦아짐에 따라 흙 구조물의 안정성에 대한 관심이 커지고 있으며, 구조물의 배수에 대한 여러 가지 방법이 제시되고 있다. 본 연구에서는 연직 배수공법에 사용되는 PBD(Plastic Board Drain)를 보강토 옹벽의 수평 배수재로 이용했을 시 적용성 여부에 대해 평가 하였다. 특히 전면벽을 콘크리트 블록이 아닌 토낭으로 하여 시공성과 경제성을 높이고, 토낭과 연결재, PBD를 일체화 시켜 안정성을 확보하였다. PBD를 활용한 배면수의 투수능 시험결과 보강토체 사이에 자갈층을 포설한 것과 유사한 효과를 나타내었으며, 실제 현장에서의 수평배수재로 활용이 가능한 것으로 판단된다.

References
1
1.Koener, R. M. and Soong, T. Y. (2001), “Geosynthetic Reinforced Segmental Retaining Walls”, Geotextiles and Geomembranes, 19(6), pp.359-386.
2
2.Korea Expressway Corporation (2007), Reinforced Retaining Wall Design Standard, Korea Expressway Corporation, Kyeonggi, Korea.
3
3.Korea Geosynthetice Society (2010), Method of Reinforced Retaining Wall Construction, CIR, Seoul, Korea, pp.55-57.
4
4.Korea Infrastructure Safety & Technology Corporation (2011), Construction Work Slop Design Standard, Ministry of Land, Transportation and Marintime Affairs, Government Complex Sejong, Korea.
5
5.NIMR (2011), “Climate change scenario report for IPCC 5th valuation report response”, National institute of Meteorogical Research.
6
6.Park, Y. J. (2010), The Improvement of Drain System for Mech-anical Stabilized Earth Wall, Master Thesis, Kyeonggi Uni-versity.
7
7.Yoo, C. S., Jung, H. Y. and Jung, H. S. (2004), “A Case Study in a Rainfall Induced Failure of Geosynthetics-Reinforced Segmental Retaining Wall”, Korea Geosynthetice Society Con-ference Fall 2004, pp.51-59.
8
8.Yoo, C. S., Jung, H. Y. and Jung, H. S. (2005), “Geosynthetics-Reinforced Segmental Retaining Wall Failure during Heavy Rainfall - A Case Study”, Journal of Korean Geotechnical Society, Vol.21, No.4, pp.135-143.
Information
  • Publisher :Korean Geosythetics Society
  • Publisher(Ko) :한국지반신소재학회
  • Journal Title :Journal of the Korean Geosynthetics Society
  • Journal Title(Ko) :한국지반신소재학회 논문집
  • Volume : 12
  • No :2
  • Pages :35-42
  • Received Date : 2013-03-25
  • Revised Date : 2013-05-13
  • Accepted Date : 2013-05-14
  • DOI :https://doi.org/10.12814/jkgss.2013.12.2.035
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