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http://dx.doi.org/10.7843/kgs.2010.26.11.29

Reinforcement Effect of Steel-Concrete Composite Group Piles by Numerical Analysis  

Chung, Moon-Kyung (Geotechnical Engrg. Research Dept., KICT)
Lee, Si-Hoon (Dept. of Civil Engrg., Dong-A Univ.)
Lee, Ju-Hyung (Geotechnical Engrg. Research Dept., KICT)
Kwak, Ki-Seok (Planning & Coordination Dept., KICT)
Kim, Sung-Ryul (Dept. of Civil Engrg., Dona-A Univ.)
Publication Information
Journal of the Korean Geotechnical Society / v.26, no.11, 2010 , pp. 29-38 More about this Journal
Abstract
The steel pipe of steel-concrete composite piles increases the pile strength and induces the ductile failure by constraining the deformation of the hiller concrete. In this research, the load-movement relations and the reinforcement effect by the outer steel pipe in the steel-concrete composite pile were analyzed by performing three-dimensional numerical analyses, which can simulate the yielding behavior of pile material and the elasto-plastic behavior of soils. The parameters analyzed in the study include three pile materials of steel, concrete and composite, pile diameter, pile distance and loading direction. The results showed that the axial capacity of the composite pile was about 90% larger than that of the steel pipe pile while similar to that of the concrete pile. At the allowable movement criteria, the horizontal capacity of the composite pile was about 50% lager than that of the steel pile and about 22% larger than that of the concrete pile.
Keywords
Drilled shaft; Numerical analysis; Steel-concrete composite pile; Steel casing; Yield behavior;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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1 Itasca(2006) FLAC 3D ver. 3.1 User's Guide.
2 Pott, D.M.(2003) "Numerical analysis: a virtual dream or practical reality?", Geotechnique, Vol.53, No.6, pp.535-573.   DOI
3 AASHTO(2004) AASHTO LRFD Bridge Design Specifications.
4 ASCE(1997) Standard Guidelines for the Design and Installation of Pile Foundations, ASCE 20-96, ASCE.
5 방춘석, 이준석, 송하원(2002), "연화 거동을 갖는 콘크리트의 3차원 탄소성 해석", 대한토목학회 논문집, 제22권 6A호, pp.1449-1457
6 Comodromos, E.M. and Pitilakis, K.D.(2004), "Response evaluation for horizontally loaded fixed-head pile groups using 3-D non-linear analysis", International Journal for Numerical and Analytical Methods in Geomechanics, Vol.29, pp.592-625.
7 Davisson, M.T.(1973), High capacity piles. Proceedings, Innovations in Foundation Construction, ASCE.
8 Fellenius B.H.(2004), Unified design of piled foundations with emphasis on settlement analysis. Geo-Trans Conference, Los Angeles, ASCE Geotechnical Special Publication Vol.125, pp.253-275.
9 방춘석, 송하원, 변근주(2003), "다축 압축응력을 받는 콘크리트의 파괴거동 해석에 관한 연구", 대한토목학회 논문집, 제23권 4A호, pp.785-793.
10 엄진호, 송준엽, 윤석구, 권영봉(2000), "콘크리트 충전 합성기둥의 거동에 대한 실험적 연구", 대한토목학회 논문집, 제20권 1A호, pp.107-114.
11 이주형, 선휴성, 박민경, 박재현, 곽기석 (2008), "수치해석을 이용한 국내 해상교량 현장타설말뚝의 강관지지효과" 대한토목학회 논문집, 제28권 3C호, pp.149-158.
12 한국건설기술연구원(2008), 고효율 하이브리드 대형 기초 공법 개발 (II)
13 김성렬, 이주형, 박재현, 정문경(2009a), "수치해석을 이용한 강관합성말뚝의 보강효과 분석(I) -재료강도", 대한토목학회 논문집, 제29권 6C호, pp.259-266.
14 대한토목학회(2001), 도로교 설계기순 해설(하부구조편).
15 김성렬, 이시훈, 정문경, 이주형 (2009b), "수치해석을 이용한 강관합성말뚝의 보강효과 분석(II) -지반 지지력", 대한토목학회 논문집, 제29권 6C호, pp.267-275.