Browse > Article
http://dx.doi.org/10.7843/kgs.2012.28.10.27

Analysis of Piled Raft Interactions in Sand with Centrifuge Test  

Park, Dong-Gyu (School of Civil and Environmental Eng., Yonsei Univ.)
Choi, Kyu-Jin (School of Civil and Environmental Eng., Yonsei Univ.)
Lee, Jun-Hwan (School of Civil and Environmental Eng., Yonsei Univ.)
Publication Information
Journal of the Korean Geotechnical Society / v.28, no.10, 2012 , pp. 27-40 More about this Journal
Abstract
In the design of a piled raft, the axial resistance is offered by the raft and group piles acting on the same supporting ground soils. As a consequence, pile - soil - raft and pile - soil interactions, occurring by stress and displacement duplication with pile and raft loading conditions, act as a key element changing resistances of the raft and group piles. In this study, a series of centrifuge model tests have been performed to compare the axial behavior of group pile and raft with that of a piled raft (having 16 component piles with an array of $4{\times}4$) in sands with different relative densities. The test results revealed that the increase of settlement resistance occurs separately with settlement by group pile - soil interactions. The axial resistance of group piles (at piled raft) increases by group pile - raft (pile cap) interactions and that of raft (at piled raft) decreases by group pile - raft (pile cap) interactions.
Keywords
Bearing capacity; Centrifuge test; Group pile; Interaction; Piled raft;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
연도 인용수 순위
1 Brinch Hansen, J. (1961), "The ultimate resistance of rigid piles against transversal forces", Bulletin No.12, Danish Geotechnical Institute, Copenhagen, Denmark, pp.5-9.
2 Fioravante, V. and Giretti, D. (2010), "Contact versus noncontact piled raft foundations", Canadian Geotechnical Journal, Vol.47, No.11, pp.1271-1287.   DOI   ScienceOn
3 Katzenbach, R., Arslan, U., Moormann, Chr., and Reul, O. (1998), "Piled raft foundation-Interaction between piles and raft", in International Conference on Soil Structure Interaction in Urban Civil Engineering, Darmstadt, 8-9 October 1998, Vol.2, No.4, pp.279-96.
4 Katzenbach, R., Arslan, U., Moormann, Chr. (2000), "Piled raft foundation projects in Germany", Design Applications of Raft Foundations, Ed. by J.A. Hemsley, Thomas Telford Ltd., 323-391.
5 Kim, D. S., Kim, N. R., Choo, Y. W., and Cho, G. C. (2012), "A newly developed state-of-the-art geotechnical centrifuge in Korea", KSCE Journal of Civil Engineering: (Posted online ahead of print) doi: 10.1007/s12205-013-1350-5.   DOI   ScienceOn
6 Kishida, G. and Meyerhof, G. G. (1965), "Bearing capacity of pile groups under eccentric loads in sand", Proceeding 6th ISCMFE, Totonto, Vol.2, pp.270-274.
7 Liu, J. L., Yuan, Z. L., and Shang, K. P. (1985), "Cap-pile-soil interaction of bored pile groups", Proceeding of 11th ICSMFE, San Francisco, Vol.3, pp.1433-1436.
8 Lee. S. H., Choi., Y. S., Chung, C. K., and Kim, M. M. (2000), "Influence of Pile Cap On The Behaviors of Vertically Loaded Pile Groups", Journal of KSCE, Vol.20, No.1-c, pp.91-98.
9 Lee, S. H. and Chung, C. K. (2003), "New Design Method for Pile Group Under Vertical Load", Journal of Korean Geotechnical Society(KGS), Vol.19, No.1, pp.31-40.
10 Lee, S. H., Park, Y. H., and Song, M. J. (2007), "A Practical Analysis Method for the Design of Piled Raft Foundation", Journal of Korean Geotechnical Society(KGS), Vol.23, No.12, pp. 83-94.
11 Lee, Y. N., Lee, H. L., and Park, Y. H. (2001), "Behavior of Small - Scale Pile Group Under Vertical Loading", Journal of Korean Geotechnical Society(KGS), Vol.17, No.6, pp. 37-46.
12 Meyerhof, G.G. (1956), "Penetration tests and bearing capacity of cohesionless soils", Journal of the soil mechanics and foundation division, ASCE, Vol.82, No.SM1, January, pp.1-19.
13 Phung, D. Long (1993), "Footing with settlement-reducing piles in non-cohesive soil", Ph. D Dissertation, Department of geotechnical engineering, Chalmers University of Technology.
14 Poulos, H. G. (2001), "Piled-raft foundation: design and applications", Geotechnique, Vol.51, No.2, pp.95-113.   DOI
15 Randolph, M. F. (1994), "Design Methods for pile groups and piled rafts", Proc 13th Inter. Conf. on Soil Mechanics and Foundation Engineering, New Delhi, India, Vol.5, pp.61-82.
16 Randolph, M. F. and Wroth, C. P. (1978), "Analysis of deformation of vertically loaded piles", Journal of Geotechnical Engineering, ASCE, Vol.104, No.12, pp.1465-1488.