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2016 Vol.18, Issue 6 Preview Page
Investigation of ground behaviour between plane-strain grouped pile and 2-arch tunnel station excavation

2-arch 터널 정거장 굴착 시 평면변형률 조건에서 군말뚝의 이격거리에 따른 지반거동 분석

Suk-Min Kong1
,
Dong-Wook Oh2
,
Ho-Yeon Ahn3
,
Hyun-Gu Lee4
,
Yong-Joo Lee5*
공 석민1
,
오 동욱2
,
안 호연3
,
이 현구4
,
이 용주5*
1Seoul National University of Science & Technology, Dept. of Civil Engineering, Ph. D. Course
2Seoul National University of Science & Technology, Dept. of Civil Engineering, Master Course
3Seoul National University of Science & Technology, Dept. of Civil Engineering, Master Course
4Seoul National University of Science & Technology, Dept. of Civil Engineering, Master Course
5Seoul National University of Science & Technology, Dept. of Civil Engineering, Professor
1정회원, 서울과학기술대학교 건설시스템공학과 박사과정
2정회원, 서울과학기술대학교 건설시스템공학과 석사과정
3정회원, 서울과학기술대학교 건설시스템공학과 석사과정
4정회원, 서울과학기술대학교 건설시스템공학과 석사과정
5정회원, 서울과학기술대학교 건설시스템공학과 교수
*교신저자. *Corresponding Author. 
30 November 2016. pp. 535-544
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Abstract

Special tunnel design and construction methods have been suggested due to developments of subway and tunnel. Collapse accidents of tunnel bring enormous damage. So, observation and analysis for the safety of tunnelling and behaviour of surrounding ground are important. But, it is not economical to implement the field test in every time. Therefore, this study has measured ground behaviour due to excavation of 2-arch tunnel station according to offset between grouped pile and tunnel by laboratory model test. For the model test, trapdoor device was adopted. Tunnelling is simulated by volume loss of 2-arch tunnel. Ground displacements are observed by close range photogrammetric method and image processing. In addition, these data are compared with numerical analysis.

Keywords
Grouped pile
2-arch tunnel excavation
Close range photogrammetry
Numerical analysis

도심지에서 지하철과 같은 터널의 증가에 따라 특수한 설계, 및 시공 방법이 제안되어 왔다. 터널 붕괴 사고는 막대한 인명, 재산 피해를 가져오기 때문에 터널 굴착 및 주변지반의 거동을 관측하고 분석하는 작업은 매우 중요하다. 하지만 매번 현장시험을 하기에는 경제적인 측면에서 비현실적이다. 따라서 현장시험의 단점을 보완하고, 보다 정밀한 결과를 도출하는 연구가 지속적으로 발표되어 왔다. 본 연구는 군말뚝과 터널 사이 이격거리에 따른 2-arch 정거장 굴착 시 주변 지반의 거동을 측정하였다. 실내모형시험을 위해 trapdoor장치를 고안하였으며, 터널굴착은 2-arch 터널의 체적손실(VL)을 증가시킴으로써 모사하였다. 또한, 근거리 사진계측 및 이미지프로세싱을 통해 지반의 거동을 관측하였으며, 수치해석을 통해 실내모형시험의 결과와 비교하였다.

키워드
군말뚝
2-arch터널굴착
근거리 사진계측
수치해석
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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 : 18
  • No :6
  • Pages :535-544
  • Received Date : 2016-10-04
  • Revised Date : 2016-11-18
  • Accepted Date : 2016-11-24
  • DOI :https://doi.org/10.9711/KTAJ.2016.18.6.535
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