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Indexed by:期刊论文

Date of Publication:2009-01-01

Journal:COMPUTERS AND GEOTECHNICS

Included Journals:SCIE、EI、Scopus

Volume:36

Issue:1-2

Page Number:125-134

ISSN No.:0266-352X

Key Words:Spudcan foundation; Bearing capacity; Anisotropy; MIT-S1 model; FE analysis

Abstract:The vertical bearing capacity of spudcan foundations in strength anisotropic soils is investigated numerically using the MIT-S1 model implemented in the AFENA finite element package. The model in AFENA is validated against existing laboratory test data of normally consolidated soil. The bearing capacities of spudcans in soils with isotropic and anisotropic strengths are compared. Soil with isotropic strength is simulated using an elasto-plastic model. It is found that the bearing capacity of a spudcan in an anisotropic soil is reduced by about 9% for a rough spudcan and 3% for a smooth spudcan on average. There is a combined effect of soil anisotropy and spudcan roughness on the spudcan bearing capacity. Moreover, the effect of the pressuremeter strength of an anisotropic soil on foundation capacity can't be ignored. (C) 2008 Elsevier Ltd. All rights reserved.