Reliability analysis of surface settlement during shield TBM tunneling

Myeong-Sik Han; Kuk-Hwan Cho

doi:10.9711/KTAJ.2016.18.3.305

All Issue

2016 Vol.18, Issue 3 Preview Page Next Page

Reliability analysis of surface settlement during shield TBM tunneling 쉴드 TBM 터널 굴착시 지표침하에 관한 신뢰성해석

31 May 2016. pp. 305-318

PDF XML

Abstract

This study is to evaluate the uncertainty of the soil parameters associated with the Gap parameter during shield TBM tunnel excavation of ○○ International Airport Terminal 2 connecting railway construction basic design. And This study is to evaluate the adequacy of the shield TBM design by performing a reliability analysis of the Surface settlement. In addition, By analyzing the reliability indices of the design constants and Sensitivity probability of failure to be used in designing an integer parameter Gap, and By evaluating the design constants of a great influence on the surface subsidence, it was to provide a basis for carrying out an optimum design.

Keywords

Surface settlement

Reliability analysis

Shield TBM

Probability of failure

본 연구에서는 ○○국제공항 제2여객터미널 연결 철도 건설공사 기본설계 중 쉴드 TBM 터널 굴착 시 Gap parameter와 관련된 지반물성치의 불확실성을 평가하고, 지표침하에 대한 신뢰성해석을 수행함으로써 쉴드 TBM 설계의 적절성을 평가하고자 한다. 또한 Gap parameter에 이용되는 설계정수의 신뢰도지수 및 파괴확률에 대한 민감도를 분석함으로써, 지표침하에 큰 영향을 미치는 설계정수를 평가함으로써 최적의 설계를 수행하는데 기초 자료를 제공하고자 하였다.

키워드

지표침하

신뢰성 해석

쉴드 TBM

파괴확률

References

1.Bae G.J., Chung, H.S., Lee, G.P., (2003), “Effect of ground settlement control on cut-off wall in shield tunnelling in soft clay”, Journal of the Korean Society of Civil Engineers , Vol. 23, No. 5C, pp. 335-344.

2.Cording, E.J., Hansmire, W.H. (1975), “Displac-ements around soft ground tunnels”, General Report. Session IV, Tunnel in Soil, Proceedings of the 5th Pan-American Congress on Soil Mechanics and Foundation Engineering, Buenos Aires, Vol. 4 p. 63.

3.Lee, K.M., Rowe, R.K., Lo, K.Y. (1992), “Subsidence owing to tunnelling. I. Estimating the gap parameter”, Canadian Geotechnical Journal 29, pp. 929-940.

4.Loganathan, N., Poulos, H.G. (1998), “Analytical predictions of tunnelling induced ground move-ments in clays.”, Journal of Geotechnical and Geoenvironmental Engineering, ASCE, Sept., 1998, Vol. 124, No. 9. pp. 846-856.

5.Loganathan, N. (2011), “An innovative method for assessing tunnelling-induced risk to adjacent structures”, PB 2009 William Barclay Parsons Fellowship, Monograph 25, Parsons Brinckerhoff Inc., New York.

6.Meyerhof, G.G. (1982), “Limit state design in geotechnical engineering”, Structural Safety, Vol. 1, pp. 67-71.

7.Park, L.K. (2003), “A study on the characteristic of ground behaviour and settlement restraining effect of micropile during shallow tunnel construction in soft ground”, Ph.D Thesis, Pusan National University.

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 :3
Pages :305-318
Received Date : 2016-04-25
Revised Date : 2016-05-20
Accepted Date : 2016-05-23
DOI :https://doi.org/10.9711/KTAJ.2016.18.3.305

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

All Issue