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http://dx.doi.org/10.7843/kgs.2011.27.1.005

Numerical Investigation on Load Supporting Mechanism of a Pile Constructed above Underground Cavity  

Choi, Go-Ny (Dept. of Mega Builings and Bridges, Sungkyunkwan Univ.)
Yoo, Chung-Sik (Dept. of Civil and Environmental Engrg., Sungkyunkwan Univ.)
Publication Information
Journal of the Korean Geotechnical Society / v.27, no.1, 2011 , pp. 5-16 More about this Journal
Abstract
This paper presents the results of a three-dimensional finite element analysis on load supporting mechanism of pile constructed above underground cavity in limestone rock formation. Considering a wide range of cavity conditions, the behavior of pile was studied using the bearing capacity, rock yielding pattern, stress distribution and deformation of pile head and the cavity. The results indicate that the load transfer mechanism of pile, rock yielding pattern and the reduction of bearing capacity of pile significantly vary with the location, size and length of cavity. Based on the results, graphical solutions defining the reduction of the bearing capacity with specific cavity conditions were suggested.
Keywords
Ultimate bearing capacity; Pile foundation; Finite-element method; Limestone; Cavity;
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  • Reference
1 O'Neill M.W. and Reese, L. (1999), "Drilled Shafts: Construction Procedures and Design Methods", Publication No. FHWA-IF-99-025, and ADSC-TL-4, Office of IMplementation, McLean, VA.
2 Sowers, G.P. (1979), Introductory Soil Mechanics and Foundations, Geotechnical Engineering, 4th ed., McMillan, NY.
3 Wang, M.C. and Badie, A. (1984), Stability of Spread Footing above Void in Clay, ASCE Journal of Geotechnical Engineering, Vol.110, No.11, pp.1591-1605.   DOI
4 Wang, M.C. and Badie, A. (1985), Effect of Underground Void on Foundation Stability, ASCE Journal of Geotechnical Engineering, Vol.111, No.8, pp.1008-1019.   DOI   ScienceOn
5 Wang, M.C. and Hsieh, C.W. (1987), Collapse Load of Strip Footing above Circular Void, ASCE Journal of Geotechnical Engineering, Vol.113, No.5, pp.511-515.   DOI   ScienceOn
6 한국도로공사 (2004), 석회암 공동부에 근입된 말뚝기초의 설계 및 시공법 개발.
7 한국지반공학회 (2009), 구조물 기초설계기준 해설.
8 AASHTO. (2004). LRFD Bridge Design Specification, 3nd Edigion, American Association of State Highway and Transportation Officials, Washington, DC.
9 Azam, B., Hsieh, C.W. and Wang, M.C. (1991), Performance of Strip Footing on Stratified Soil Deposit with Void, ASCE Journal of Geotechnical Engineering, Vol.117, No.5, pp.753-772.   DOI
10 Kulhawy, F.H. and Goodman, R.E. (1980), "Design of Foundations on Discontinous Rock.", Proceedings of the International Conference on Structural Foundations on Rock, International Society for Rock Mechanics, Vol.1, pp.9-220.
11 임철훈 (2000), "석회암 지대의 기초보강 필요성 및 대책", 대한토목학회, Vol.48, No.3, pp.46-54.
12 Ladanyi, B., and Archambault, G. (1970), "Simulation of shear behaviour of a jointed rock mass", Proc of 11th Symp. on Rock Mechanics, : Theory and Practice, pp.105-125.
13 유충식 (1997), "지하공동위에 위치한 확대기초의 지지력 산정기법", 한국지반공학회, 제13권, 제1호, pp.75-84.
14 천병식, 박형준 (2005), "유한요소해석에 의한 석회암 공동지반의 변형특성에 관한 연구", 한국지반환경공학회, 제6권, 제1호, pp.63-72.
15 홍원표, 홍건표, 여규원 (2008), "고압분사주입공법으로 보강된 석회암공동의 거동특성", 한국지질공학회, 제18권, 제1호, pp.7-16.
16 광해방지사업단 (2006), 단양고수지역 지반안정성 기본조사보고서.
17 유충식 (1994), "지하 공동이 얕은 기초의 극한지지력에 미치는 영향", 대한토목학회, 제1권, pp.581-584.