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2024 Vol.34, Issue 2 Preview Page

Research Article

Numerical Analysis of the Stability of a High-Strength Joint Buried Pile Retaining Wall Method

수치해석을 이용한 고강도 결합 매입말뚝 흙막이 공법의 안정성 검토에 관한 연구

Hyeok Seo1
,
Yeongpan Ha2
,
Junyoung Choi3
,
Kyungho Park4
,
Daehyeon Kim5*
서 혁1
,
하 영판2
,
최 준영3
,
박 경호4
,
김 대현5*
1Postdoctoral Researcher, Department of Civil Engineering, Chosun University
2President, The Forest D&C Co., Ltd.
3President, Mirae Construction Safety Co., Ltd.
4Assistant Professor, Department of Civil Construction Engineering, Chosun College of Science and Technology
5Professor, Department of Civil Engineering, Chosun University
1조선대학교 토목공학과 박사후연구원
2(주)더숲디엔씨 대표이사
3(주)미래건설안전 대표이사
4조선이공대학교 토목건설과 조교수
5조선대학교 토목공학과 교수
*Corresponding Author
30 June 2024. pp. 249-262
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Abstract

Retaining walls are widely used in the construction of underground structures. This study reviews the stability of the high-strength joint buried pile method at a site in Korea. [Consider giving details of the location.] The method is assessed by considering the amount of ground settlement, as calculated by finite element analysis and measured at the site. Comparison of the measured and numerical results confirmed the method’s stability and field applicability. Settlement of 13.42~13.65 mm was calculated for seven cross-sections [The Abstract should be comprehensible without reference to the main text. The labels A-A′ to G-G′ should not be introduced here without explanation.] using numerical analysis, and the measured settlement reached a maximum of 2.00 mm. The observed differences and variations [Please state what differed/varied.] did not exceed the design expectations in any section. Instruments installed at the back of the excavation area were used to assess the conditions. An underground gradient meter recorded a cumulative horizontal displacement of between -0.40 and 0.60 mm, and an underground water meter recorded slight displacements of between -0.21 and 0.28 m compared with the initial measurements. A surface settlement meter observed very little movement, with a maximum of -2.00 mm compared with the initial measurement, thereby confirming the establishment of a stable state within the management criteria.

Keywords
shear force
numerical analysis
retaining wall method
measurement settlement
stability review

일반적으로 흙막이 공법은 지하구조물 시공시 주로 사용되는 공법이다. 본 연구에서는 대상현장지반에 대한 고강도 결합 매입말뚝 흙막이 공법의 안정성을 검토하였다. 실험내용으로는 유한요소해석법을 통한 지반의 침하량 검토를 수행하였으며, 공법이 적용된 지반의 계측 데이터와 수치해석 결과를 비교 ‧ 분석하여 안정성 및 현장 적용성을 확인하고자 하였다. 수치해석상 침하량 결괏값과 현장 계측을 통한 침하량 측정값을 비교한 결과, A-A′~G-G′ 단면의 수치해석상 침하량 결괏값은 최소 13.42 mm~최대 13.65 mm, 현장계측을 통한 침하량은 최대 2.00 mm로 확인되었다. 각각의 오차는 미미한 차이를 보였으며, 모든 구간에서 설계 예상치를 벗어나지 않음을 확인하였다. 굴착주변의 배면에 대한 계측기 설치결과, 지중경사계의 경우 누적수평변위는 -0.40~0.60 mm로 나타났고, 지하수위계 계측결과 초기측정치 대비 -0.21~0.28 m로 미소한 변위를 확인할 수 있었다. 또한 지표침하계의 경우 초기측정치 대비 최대 -2.00 mm로 매우 미소하게 확인되었고, 관리기준 내 안정적인 상태로 확인되었다.

키워드
전단력
수치해석
흙막이 공법
계측침하량
안정성검토
References
1

Choi, J.S., Yoon, E.J., 2007, Application of excellent-joint pile to improve waterproofing and continuous-boring in cast in place pile method, Proceedings of the Korean Society of Civil Engineers Annual Conference & Civil Expo, Seoul, 850-853.

2

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3

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4

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5

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8

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Yang, C.K., 2019, Aseismic characteristics of earth retaining structures by stiffness of wall and strut, Doctor's Thesis, Suwon University, 1-166 (in Korean with English abstract).

Information
  • Publisher :Korean Society of Engineering Geology
  • Publisher(Ko) :대한지질공학회
  • Journal Title :The Journal of Engineering Geology
  • Journal Title(Ko) :지질공학
  • Volume : 34
  • No :2
  • Pages :249-262
  • Received Date : 2024-03-11
  • Revised Date : 2024-06-11
  • Accepted Date : 2024-06-14
  • DOI :https://doi.org/10.9720/kseg.2024.2.249
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