- 권한신청
- P-ISSN2233-8292
- E-ISSN2287-4747
- KCI
ISSN : 2233-8292
확률유한요소 해석에 의한 근접터널 안정성 분석
Stability analysis of closely-spaced tunnel using RFEM
Abstract
In this paper, the modeling procedure of random field with an elasto-plastic finite element algorithm and probability of failure on closely-spaced tunnel were investigated. Local average subdivision (LAS) method which can generate discrete random variables fast and accurately as well as change the resolution in certain region was used. And correlated value allocating and weighted average method were suggested to implement geometrical characteristics of tunnel. After the probability of failure on the test problem was thoroughly investigated using random finite element method, the results were compared with the deterministic strength reduction factor method and single random variable method. Of particular importance in this work, is the conclusion that the probability of failure determined by simplified probabilistic analysis, in which spatial variability is ignored by assuming perfect correlation, can be estimated from the safety factor determined by strength reduction factor method. Also, single random variable method can lead to unconservative estimates of the probability of failure.
- keywords
- 확률유한요소, 랜덤변수, 공간상관길이, LAS(local average subdivision), Random finite element, random variable, spatial correlation length, local average subdivision
참고문헌
박연준 ; 유광호 ; 이상돈 ; 박종원, (2004) 터널의 안전율 평가 기법에 관한 연구, 터널과 지하공간
Duncan, J. M, (2000) Factor of safety and reliability in geotechnical engineering, Journal of Geotechnical and Geoenvironmental Engineering
Fenton, G. A, (1990) Simulation of random fields via local average subdivision, Journal of Engineering Mechanics
Fenton, G. A, (2002) Probabilistic foundation settlement on spatially random soil, Journal of Geotechnical and Geoenvironmental Engineering
Fenton, G. A, (2004) Closure to discussion on bearing capacity prediction of spatially random c - soils, Canadian Geotechnical Journal
Griffiths, D. V, (2004) Probabilistic slope stability by finite elements, Journal of Geotechnical and Geoenvironmental Engineering
Kulhawy, F. H, (1995) Some statistical evaluations of geotechnical properties, Proceedings of ICASP, 6th International Conference Applied Statistical Problems in Civil Engineering
Lee, I. K., (1983) Geotechnical Engineering, Pitman
Paice,G.M, (1997) Finite element analysis of stochastic soils,
Vanmarcke, E. H, (1984) Random field: analysis and synthesis, The MIT Press Cambridge
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