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An Analytical Study for Determining Optimum Section and Trench Range on Soft Counter Weight Fill

연약지반상 압성토의 최적단면 및 측구위치 결정을 위한 해석적 연구

Jongcheol Park1
,
Yongchai Chang2*
,
Incheol Baek3
,
Donghwan Jung4
박 종철1
,
장 용채2*
,
백 인철3
,
정 동환4
1POSCO E&C
2Professor, Dept. of ocean · plant civil Engineering, Mokpo National Maritime University.
3Graduate Student, Dept. of ocean · plant civil Engineering, Mokpo National Maritime University.
4Graduate Student, Dept. of ocean · plant civil Engineering, Mokpo National Maritime University.
*교신저자. *Corresponding Author. 
30 March 2015. pp. 51-58
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Abstract

The counter weight filling is a technology to accumulate soils on the side of berm with a proper width and height for improving the stability of the embankment. This study aims to assess a feasibility of the counter weight filling in the construction of pavement roads for recovery of shear failure during the construction. An effective counter weight filling section was suggested using the numerical analysis. The results showed that the effective counter weight filling section is two-fold (x2) higher than the ratio of width in counter weight filling : embankment height and one third (1/3) to the ratio of height in counter weight filling : embankment height. Also a range of effective trench crossing the counter weight filling required when a trench crossing counter weight filling is installed was suggested by supplying a proper distance between the counter weight filling section and cross-sectional trench.

Keywords
Counter weight fill method
Numerical analysis
Safety factor
Embankment
Shear failure

압성토공법은 성토체의 안정성을 높이기 위하여 성토체 측면에 일정한 폭과 높이로 흙을 쌓은 공법을 말한다. 본 연구는 실제 도로현장에서 전단파괴가 발생되어 복구방법으로 압성토공법을 적용한 시공사례를 분석한 것이다. 본 연구는 수치해석을 실시하여 효율적인 압성토 단면을 제시하고자 한다. 수치해석결과 효율적인 압성토 단면은 압성토 폭 : 제체 높이의 2배(2H), 압성토 높이 : 제체높이의 1/3(H/3) 이다. 또한, 압성토체를 가로지르는 측구를 설치할 경우, 본성토체로부터 적절한 이격거리를 제시함으로서 효과적인 횡단측구의 범위를 제시하였다.

References
1
1.Bergado. D.T. (1996), “Soft Ground Improvement”, ASCE Press. pp.131-146.
2
2.Dong-yi Lee (2008), “A study on application of counterweight fill in sloped banking area“, Master thesis, Hankyong National University. pp.1-12.
3
3.Eun-Chool Kwon (2002), “A study on the effect of the counter balance method for the shear failure”, Master thesis, Miryang National University. pp.13-20.
4
4.Jong-soon Bae (2001), “Deformation of soft soil due to geometry of berm”, Journal of Korea Society of Civil Engineers. pp.661-669.
5
5.Korean Geotechnical Society (2005), “Soft Ground”, Goomi Press. pp.238-244.
6
6.Terzaghi, K. and Peck, R. B. (1967), “Soil Mechanics in Engineering Practices”, John Wiley and Sons, New York, pp.380-382.
7
7.Yong-chai Chang (1995), “Geotechnical Engineering on Soft Ground”, Seron press. pp.326-342.
Information
  • Publisher :Korean Geosythetics Society
  • Publisher(Ko) :한국지반신소재학회
  • Journal Title :Journal of the Korean Geosynthetics Society
  • Journal Title(Ko) :한국지반신소재학회 논문집
  • Volume : 14
  • No :1
  • Pages :51-58
  • Received Date : 2015-01-25
  • Revised Date : 2015-03-09
  • Accepted Date : 2015-03-10
  • DOI :https://doi.org/10.12814/jkgss.2015.14.1.051
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