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Centrifuge modeling of surface footings on a sand layer underlain by a rigid base |
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| Authors: | Rochelle Brown Arun J Valsangkar Allison B Schriver |
| Institution: | (1) Jacques Whitford and Assoc. Ltd., 20 Broadway Avenue South, Saint John, N.B., Canada, E2L 5C5;(2) Department of Civil Engineering, University of New Brunswick, P.O. Box 4400, Fredericton, N.B., Canada, E3B 5A3;(3) Department of Civil Engineering, University of New Brunswick, P.O. Box 4400, Fredericton, N.B., Canada, E3B 5A3 |
| Abstract: | The results of centrifuge modeling of surface footings on a sand layer underlain by a rigid base are presented. The primary objective was to investigate the effect of sand layer thickness on the ultimate bearing capacity. The relative density of the sand layer and shapes of the model footings were also varied in the test program. The data indicate that prototype size footings are likely to experience local shear failure rather than general shear type failure. The observed values of the bearing capacity are compared with the predictions based on the Mandel and Salencon (1972) theory. It is concluded that theoretical predictions are conservative in relation to the experimental bearing capacity values, if appropriate values of mobilized angles of friction are used. This revised version was published online in July 2006 with corrections to the Cover Date. |
| Keywords: | bearing capacity centrifuge modeling rigid boundary sand |
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