Strength Parameters for Bearing Capacity of Sand
Publication: Journal of Geotechnical Engineering
Volume 114, Issue 4
Abstract
The results of centrifuge tests for bearing capacity of circular footings are used to verify the bearing capacity predictions using Hansen's equations with interpretations by Meyerhof and De Beer. The correlation with De Beer's method, which accounts for the variation of friction angle ϕ with normal pressure, is very good. An alternate proposal, using a constant ϕ and an intercept c at zero normal pressure that best fit the failure envelope in the range of interest, also gives a good correlation with the data. The proposed method does not require the iteration procedure that is required by Meyerhof and De Beer. The results are applicable to shallow circular foundations in dense sand where general shear failure is the dominant mechanism. Modeling of models tests were conducted to verify the centrifuge scaling laws over a range in scale factors. The good agreement of modeling of model tests shows that the centrifuge is a useful tool for modeling bearing capacity problems.
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References
1.
Abghari, A. (1987). “Leaning instability of tall structures,” dissertation presented to the University of California, Davis, Calif., in partial fulfillment of the requirements for the degree of Doctor of Philosophy.
2.
Bagge, G., and Christensen, S. N. (1977). “Centrifugal testing on the bearing capacity of circular footings on the surface of sand.” DIALOG 1‐77, Danmarks Ingeniorakademi, Bygningsdafdelingen, Lyngby, Denmark.
3.
De Beer, E. E. (1967). “Bearing capacity and settlement of shallow foundations on sands.” Proc. Symp. on Bearing Capacity and Settlement of Found., Duke University, Durham, N.C., 15–33.
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Hansen, J. B. (1970). “A revised and extended formula for bearing capacity.” Bulletin No. 28, Danish Geotechnical Institute, Copenhagen, Denmark, 5–11.
5.
Ovesen, N. K. (1975). “Centrifuge testing applied to bearing capacity problems of footings on sand.” Geotechnique, 25(2), 394–401.
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Copyright © 1988 ASCE.
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Published online: Apr 1, 1988
Published in print: Apr 1988
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