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2020 Vol.36, Issue 12 Preview Page

Research Article

Evaluation of Field Application of Precast Concrete-panel Retaining Wall attached to In-Situ Ground Using Field Test and Numerical Analysis

현장시험 및 수치해석 분석을 통한 원지반 부착식 판넬옹벽의 현장 적용성 평가

Yong Kyu Kwon1
,
Kyoung-nam Min2†
,
Young-cheol Hwang3
,
Hoki Ban4
,
Minjae Lee5
권 용규1
,
민 경남2†
,
황 영철3
,
반 호기4
,
이 민재5
1Member, Ph.D. Student, Dept. of Civil Engrg., Chungnam National Univ.
2Member, CEO, Sejong E&C.
3Member, Prof., Dept. of Civil Engrg., SangJi Univ.
4Member, Associate Prof., Dept. of Civil Engrg., Kangwon National Univ.
5Prof., Dept. of Civil Engrg., Chungnam National Univ.
1정회원, 충남대학교 토목공학과 박사과정
2정회원, 세종 E&C 사장
3정회원, 상지대학교 스마트건설공학과 정교수
4정회원, 강원대학교 토목공학과 부교수
5비회원, 충남대학교 토목공학과 정교수
*knmin4183@naver.com
31 December 2020. pp. 99-106
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Abstract

Man-made slope is inevitable to make a new road, which may result in environmental problems as well as collapse of slope. To prevent these problems, various methods such as geogrid reinforced retaining wall, precast concrete-panel retaining wall, and so on, have been introduced and developed. Among these methods, this paper presents the evaluation of field application of precast concrete-panel retaining wall attached to in-situ ground (so called top-down) compared to the conventional construction method of precast concrete-panel retaining wall (so called bottom-up) through the field test and numerical analysis. As a result, the safety factor of both methods in final stage is similar, however, top-down method guarantees the slope stability during the construction compared to bottom-up method.

Keywords
Field test
Numerical analysis
Precast concrete-panel
Slope stability

우리나라는 산지가 많은 지형적인 특성으로 교통의 편리를 위해 산지를 절취하여 변형시키는 공사가 매년 증가하고 있다. 특히 산지를 절치하여 변형시킬 경우 자연재해로 인한 사면 붕괴, 환경문제 등의 문제가 발생한다. 이러한 문제를 해결하고자 판넬식 옹벽, 보강토 옹벽 등의 다양한 보강공법이 있다. 하지만 Bottom-up방식의 경우 경사굴착으로 인한 추가 토공처리가 필요하며 되메움과 다짐불량에 의한 안정성 저하 등의 문제점을 지니고 있다. 따라서 본 연구에서는 기존 Bottom-up방식의 문제점을 해결하기 위해 Top-down방식에 대해 현장 적용시험 및 수치해석을 통해 안정성 분석을 수행하였으며, 대표단면을 선정하여 Bottom-up방식과 Top-down방식에 대해 안정성 비교분석하였다.

References
1
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2
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Min, K., Lee, J., Lee, J., Kang, I., and Ahn, T. (2016), Field Application of a Precast Concrete-panel Retaining Wall Adhered to In-situ Ground, The Journal of Engineering Geology, Vol.26, No.1, pp.51-61. 10.9720/kseg.2016.1.51
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Information
  • Publisher :The Korean Geotechnical Society
  • Publisher(Ko) :한국지반공학회
  • Journal Title :Journal of the Korean Geotechnical Society
  • Journal Title(Ko) :한국지반공학회 논문집
  • Volume : 36
  • No :12
  • Pages :99-106
  • Received Date : 2020-12-08
  • Revised Date : 2020-12-14
  • Accepted Date : 2020-12-14
  • DOI :https://doi.org/10.7843/kgs.2020.36.12.99
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