A study on construction simulation of road tunnel using Decision Aids for Tunneling (DAT)

Sangyoon Min; Taek Kon Kim; H.H. Einstein; Jun S. Lee; Ho Young Kim

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2003 Vol.5, Issue 2 Preview Page Next Page

A study on construction simulation of road tunnel using Decision Aids for Tunneling (DAT) 터널의사결정체계 (DAT)를 이용한 도로터널의 시공 시뮬레이션 연구

30 June 2003. pp. 161-174

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Abstract

Applicability of the Decision Aids for Tunneling (DAT) technique is investigated in this study to better understand the efficiency of the decision making process during tunnel construction. For this, a traffic tunnel under construction is adopted and information on the construction procedure, i.e., overall geology, unit cost and construction time for each excavation process, is provided periodically. Various scattergrams in which cost-time simulation results are plotted are obtained according to the simulation methods and final prediction on the construction time/cost is made. It is found that the uncertainty in the cost distribution is greater than the uncertainty in the time distribution for each cycle simulation and the uncertainties in time and cost for the one time simulations are comparable. Future work will be concentrated on the updating scheme using the face mapping data and various parametric studies will also be performed.

Keywords

Decision aids

cost/duration evaluation

simulation

터널의사결정체계중의 하나인 DAT기법의 효용성 평가를 위해서 현재 시공중인 2차로 병설터널현장에 적용하였다. 이를 위해 지질조건, 굴착패턴, 설계단가 등으로부터 지질모듈과 시공모듈 자료를 입력하고, 병설터널 시공과정 모사를 위해 위치별로 다양한 시뮬레이션을 수행하였다. 그 결과 다양한 공기-공사비 분포를 얻을 수 있었으며, 각 시공과정마다 각기 다른 분포 특성을 분석하였다. “each cycle” 시뮬레이션은 공기분포에 비해 공사비의 불확실성 분포가 더 크게 나타났으며, “one time” 시뮬레이션에 비해 공기분포의 불확실성은 작게 나타남을 알 수 있었다. 향후 현장자료의 지속적인 갱신과 다양한 매개변수 연구를 통해 이러한 불확실성을 줄여나갈 것이다.

키워드

터널의사결정체계 (DAT)

공기-공사비분포

시공 시뮬레이션

References

1. Einstein, H. H. (2001), The Decision Aids for Tunnelling (DAT) - A brief review, Tunnelling Technology, Korea Tunnelling Assoc., Vol. 3, pp.37-49, in English.

2. Haas, C. and Einstein, H. H. (2002), Updating the decision aids for tunneling, J. Const. Eng. & Manage., ASCE, Vol. 128, pp.40-48.

3. G.Russo, S.Xu, F.Valdemarin & P.Grasso, 1997. “Tunnel construction time and cost probabilistic evaluation with the system DAT (Decision Aids for Tunneling)”. National Research Council- Committee for Geological and Mining Sciences- Strategic Project Tunnel-Final Report: pp. 124- 138.

4. G. Russo, G.S. Kalamaras, L.Origlia & P. Grasso, 2001, “A probabilistic approach for characterizing the complex geological environment for design of the new metro of Porto”. AITES-ITA 2001 World Tunnel Congress, Milano, pp 463-470. Paris.

5. Sinfield, J. V. and Einstein, H. H., 1996, Evaluation of tunneling technology using the decision aids for tunneling, Tunnelling & Under. Space Tech., Vol. 11, pp.491-504.

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 : 5
No :2
Pages :161-174

Journal of Korean Tunnelling and Underground Space Association ISSN:2233-8292(Print) 2287-4747(Online) 한국터널지하공간학회 논문집

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