Bearing Capacity of Expanded‐Base Piles in Sand
Publication: Journal of Geotechnical Engineering
Volume 116, Issue 1
Abstract
The results of loading tests are used to develop empirical correlations between the point‐bearing resistance of expanded‐base piles and the results of standard penetration tests. The resistance is shown to be proportional to depth for piles having shaft lengths not exceeding 10 base diameters. The results also show that there is no significant difference between the point resistance of piles in relatively homogeneous soils and piles founded in a bearing stratum overlain by soft, compressible soil at the same overall depth/base diameter ratio measured from ground surface. Values of the bearing capacity factor were calculated by dividing the point resistance at failure by the effective overburden pressure at the level of the maximum cross section of the base. was found to decrease dramatically with increasing effective overburden pressure, indicating that ambient stress level must be considered in bearing capacity analysis. The results show no evidence of a critical depth below which point resistance is constant; rather point resistance continues to increase with depth, but at a reducing rate.
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References
1.
Berezantsev, V. C., Khrisoforov, V. S., and Golubkov, V. N. (1961). “Load bearing capacity and deformation of piled foundations.” Proc. 5th Int. Conf. on Soil Mech. and Foundation Engrg., 2, 11–15.
2.
Briaud, J. L. (1988). “Evaluation of cone penetration test methods using 98 pile load tests.” Proc. 1st Int. Symp. on Penetration Testing, 2, 687–697.
3.
Briaud, J. L., and Tucker, L. M. (1984). “Piles in sand: A method including residual stresses.” J. Geotech. Engrg., ASCE, 110(11), 1666–1680.
4.
Briaud, J. L., and Tucker, L. M. (1988). “Measured and predicted axial response of 98 piles.” J. Geotech. Engrg., ASCE, 114(9), 984–1001.
5.
Chin, F. K., and Vail, A. J. (1973). “Behavior of piles in alluvium.” Proc. 8th Int. Conf. on Soil Mech. and Foundation Engrg, 2.1, 47–52.
6.
Coyle, H. M., and Castello, R. (1981). “New design correlations for piles in sand.” J. Geotech. Engrg., ASCE, 107(7), 965–986.
7.
Ervin, M. C., and Pells, P. J. N. (1985). “Performance of timber piles in interbedded sands and clays.” Proc. 11th Int. Conf. on Soil Mech. and Foundation Engrg., 3, 1377–1380.
8.
Fleming, W. G. K., et al. (1985). Piling engineering. John Wiley and Sons, Inc., New York, N.Y.
9.
Kerisel, J. (1964). “Deep foundations basic experimental facts.” Proc. Conf. on Deep Foundations, 1, 5–44.
10.
Kulhawy, F. H. (1984). “Limiting tip and side resistance: Fact or fallacy?” Proc. Symp. on Analysis and Design of Pile Foundations, ASCE, 80–98.
11.
Meyerhof, G. G. (1956). “Penetration tests and bearing capacity of cohesionless soils.” J. Soil Mech. and Found. Engrg. Div., ASCE, 82(1), 1–19.
12.
Meyerhof, G. G. (1959). “Compaction of sands and bearing capacity of piles.” J. Soil Mech. and Found. Engrg. Div., ASCE, 85(6), 1–30.
13.
Meyerhof, G. G. (1976). “Bearing capacity and settlement of pile foundations.” J. Geotech. Engrg., ASCE, 102(3), 197–228.
14.
Meyerhof, G. G. (1983). “Scale effects of ultimate pile capacity.” J. Geotech. Engrg., ASCE, 109(6), 797–806.
15.
Mitchell, J. K. (1968). “In‐place treatment of foundation soils.” Proc. Special Conf. on Placement and Improvement of Soil to Support Structures, ASCE, 93–130.
16.
Neely, W. J. (1989). “Bearing pressure—SPT correlations for expanded base piles in sand.” Proc., Foundation Engrg. Congress, ASCE, 2, 979–990.
17.
Neely, W. J., Waitkus, R. A., and Schnabel, J. J. (1987). “Pressure injected footings in Piedmont profiles.” Foundations and Excavation in Decomposed Rock of the Piedmont Province, Geotechnical Special Publication No. 9, ASCE, New York, N.Y., 37–61.
18.
Nordlund, R. L. (1982). “Dynamic formula for pressure injected footings.” J. Geotech. Engrg., ASCE, 108(3), 419–437.
19.
Peck, R. B., Hanson, W. E., and Thornburn, T. H. (1974). Foundation engineering. 2nd Ed., John Wiley and Sons, Inc., New York, N.Y.
20.
Skempton, A. W. (1986). “Standard penetration test procedures and the effects in sand of overburden pressure, relative density, particle size, ageing and overconsolidation.” Geotechnique, London, England, 26(3), 425–447.
21.
Vesic, A. S. (1977). “Design of Pile Foundations.” Report No. 42, Nat. Co‐operative Highway Res. Program, Synthesis of Practice, Washington, D.C.
Information & Authors
Information
Published In
Journal of Geotechnical Engineering
Volume 116 • Issue 1 • January 1990
Pages: 73 - 87
Copyright
Copyright © 1990 ASCE.
History
Published online: Jan 1, 1990
Published in print: Jan 1990
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