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2019 Vol.21, Issue 3 Preview Page

Research Paper

Measurement of ground behaviour due to tunnelling using No-target program in laboratory model test

실내모형시험에서 No-target 프로그램을 이용한 터널 굴착으로 인한 지반거동 측정

Jong-Hyun Lee1
,
Chang-No Lee2
,
Yong-Joo Lee3*
이 종현1
,
이 창노2
,
이 용주3*
1Master’s Graduation, Dept. of Civil Engineering, Seoul National University of Science and Technology
2Professor, Dept. of Civil Engineering, Seoul National University of Science and Technology
3Professor, Dept. of Civil Engineering, Seoul National University of Science and Technology
1비회원, 서울과학기술대학교 건설시스템공학과 석사
2비회원, 서울과학기술대학교 건설시스템공학과 교수
3정회원, 서울과학기술대학교 건설시스템공학과 교수
* Corresponding Author
31 May 2019. pp. 397-418
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Abstract

It is very important to understand and analyze the interactive behaviour between ground and adjacent structures due to tunneling. With many technological advancement in modern society, numerous methods for analyzing the interactive behaviour are used in a wide range of civil engineering fields. Close range photogrammetry is mainly being used in the field of geotechnical engineering and research on measuring methods associated with GeoPIV has been currently increased. Originally, the close range photogrammetry using target points and aluminum rods for VMS (Vision Measurement System) program has been used. However, applying this has a problem that external errors can be occurred because the target points are artificially installed by hand, and if the grid between points is being wider or narrower, deficient data can be obtained. Therefore, in this study, MATLAB-based No-target program that can analyze displacement without using target was developed. Additionally, this study focused on comparison and verification with existing program through numerical analysis and laboratory model test. Three cases of Greenfield condition, Strip foundation, and Pile foundation were analyzed. From results of VMS program and No-target program, the error rate and reliability of the total displacement and the vertical displacement were analyzed. It was also compared and verified through the finite element numerical program, PLAXIS.

Keywords
Tunnel excavation
Close range photogrammetry
No-target
Laboratory model test
Finite element analysis

터널 굴착으로 인한 지반 및 인접 구조물의 거동을 이해하고 분석하는 것은 매우 중요하며, 이는 현대사회에서의 과학기술의 발전과 함께 토목공학 분야에서 폭넓게 활용되고 있다. 근거리 사진계측기법은 지반공학 분야에서 주로 쓰이고 있으며, 최근 GeoPIV 등을 이용한 계측기법의 연구가 증가하고 있는 추세이다. 본래에는 지반의 거동을 계측하여 시각화하는 방법으로 알루미늄 봉과 타겟 포인트를 이용한 VMS 프로그램이 주로 사용되어 왔다. 하지만 이러한 방법을 적용할 경우, 타겟 포인트가 손에 의해 인위적으로 설치되기 때문에 외부적인 오차가 발생할 수 있다. 또한 포인트 사이의 그리드가 넓거나 좁을 경우 희박한 데이터가 도출될 수 있는 문제점을 안고 있다. 따라서 본 연구에서는 타겟의 사용 없이 변위를 분석할 수 있는 MATLAB 기반의 No-target 프로그램을 개발하였고 수치해석과 실내 모형시험을 통해 기존의 프로그램과의 비교 및 검증에 초점을 맞추었다. 연구 내용으로는 greenfield condition, strip foundation, pile foundation 3가지 Case에 대하여 실내 모형시험을 실시하였으며, VMS 프로그램과 No-target 프로그램의 결과로부터 total displacement와 vertical displacement의 오차율을 분석하였다. 또한 유한요소 수치해석 프로그램인 PLAXIS를 통하여 실내 모형시험과의 결과와 비교 및 검증하였다.

키워드
터널굴착
근거리 사진계측기법
No-target
실내 모형시험
유한요소 수치해석
References
1
Allersma, H.G.B. (1990), “On line measurement of soil deformation in centrifuge tests by image processing”, Proceedings of the International Conference on Experimental Mechanics, Copenhagen, pp. 1739-1748.
2
Allersma, H.G.B., Stuit, H.G., Holscher, P. (1994), “Using image processing in soil mechanics”, Proceedings of the 12th International Conference, Soil Mechanics, New Delhi, pp. 1341-1344.
3
Atkinson, J. (2016), The mechanics of soils and foundations, CIR, Seoul, pp. 538-539.
4
Das, B.M. (2010), Principles of geotechnical engineering, CENGAGE Learning, Stanford, pp. 65.
5
Kong, S.M., Lee, Y.J. (2016), “A study on soil behaviour due to tunneling under embedded pile using close range photogrammetry”, Journal of Korean Tunnelling and Underground Space Association, Vol. 18, No. 4. pp. 365-376.
10.9711/KTAJ.2016.18.4.365
6
Kwon, H.J., Kim, D.S., Park, J.B., Jung, S.K. (2007), Foundation engineering, Goomibook, Seoul, pp. 204-206.
7
Lee, H.G. (2017), Investigation of ground behavior according to ground water locations due to Tunnelling under shallow foundation in sand, Master Thesis, The Graduate School, Seoul National University of Science and Technology, pp. 15.
8
Lee, J.H. (2014), Model tunnel excavation using close range photogrammetric technique for tunnel roof reinforcement, Master Thesis, The Graduate School, Seoul National University of Science and Technology, pp. 24-26.
9
Lee, J.H., Lee, Y.J. (2014), “Analysis of ground behavior for model tunnel excavation with pipe roof reinforcement using close range photogrammetric technique”, Journal of Korean Tunnelling and Underground Space Association, Vol. 16, No. 4, pp. 387-402.
10.9711/KTAJ.2014.16.4.387
10
Lee, S.D. (2017), Settlement of ground, CIR, Seoul, pp. 269-274.
11
Lee, Y.J. (2006), “Comparison of shallow model tunnel test using image processing and numerical analysis”, Journal of the Korean Geotechnical Society, Vol. 22, No. 7, pp. 5-12.
12
Lee, Y.J., Bassett, R.H. (2006), “Application of a photogrammetric technique to a model tunnel”, Tunnelling and Underground Space Technology, Vol. 21, No. 1, pp. 79-95.
10.1016/j.tust.2005.06.005
13
Lee, Y.J., Song, K.J. (2010), “Shearing characteristics of aluminium rods using plane strain - Shear box test and close range photogrammetric technique”, Journal of the Koran Geotechnical Society, Vol. 26, No. 8, pp. 5-14.
14
Oh, D.W., Lee, Y.J. (2017) "Analysis of pile load distribution and ground behavior depending on vertical offset between pile tip and tunnel crown in sand through laboratory model test”, Journal of Korean Tunnelling and Underground Space Association, Vol. 19, No. 3, pp. 355-373.
10.9711/KTAJ.2017.19.3.355
15
Peck, R.B. (1969), “Deep excavation and tunneling in soft ground”, Proceedings of the 7th International Conference on Soil Mechanics and Foundation Engineering, Mexico, State-of-the-art Reports, pp. 311-375.
16
Potts, D., Axelsson, K., Grande, L., Schweiger, H., Long, M. (2014), Guideliness for the use of advanced numerical analysis, CIR, Seoul, pp. 18-19.
17
Stanier, S.A., Blaber, J., Take, W.A., White, D.J. (2015), “Improved imaged-based deformation measurement for geotechnical applications”, Canadian Geotechnical Journal, Vol. 53, No. 5, pp. 727-739.
10.1139/cgj-2015-0253
Information
  • Publisher :Korean Tunneling and Underground Space Association
  • Publisher(Ko) :한국터널지하공간학회
  • Journal Title :Journal of Korean Tunnelling and Underground Space Association
  • Journal Title(Ko) :한국터널지하공간학회 논문집
  • Volume : 21
  • No :3
  • Pages :397-418
  • Received Date : 2019-03-29
  • Revised Date : 2019-04-30
  • Accepted Date : 2019-05-02
  • DOI :https://doi.org/10.9711/KTAJ.2019.21.3.397
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