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Bearing Capacity of Foundations with Inclusion of Dense Sand Layer over Loose Sand Strata

Khatri, Vishwas N and Kumar, Jyant and Akhtar, Shamim (2017) Bearing Capacity of Foundations with Inclusion of Dense Sand Layer over Loose Sand Strata. In: INTERNATIONAL JOURNAL OF GEOMECHANICS, 17 (10).

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Official URL: http://dx.doi.org/10.1061/(ASCE)GM.1943-5622.00009...

Abstract

The lower- and upper-bound finite-element limit analysis in conjunction with second-order conic programming (SOCP) was used to estimate the ultimate bearing capacity of strip and circular footings with an inclusion of a layer of dense sand over existing loose sand strata. The analysis followed the Mohr-Coulomb yield criterion and an associated flow rule. The results are expressed in terms of an efficiency factor that increases quite significantly with increases in the (1) thickness and (2) friction angle of the upper densified layer. While keeping the same thickness of the upper dense sand layer, the circular footing exhibits greater efficiency-factor values as compared to strip footing. The numerical results compare well with data available from the literature. (C) 2017 American Society of Civil Engineers.

Item Type: Journal Article
Additional Information: Copy right for this article belongs to the ASCE-AMER SOC CIVIL ENGINEERS, 1801 ALEXANDER BELL DR, RESTON, VA 20191-4400 USA
Department/Centre: Division of Mechanical Sciences > Civil Engineering
Depositing User: review EPrints Reviewer
Date Deposited: 13 Jan 2018 06:14
Last Modified: 13 Jan 2018 06:14
URI: http://eprints.iisc.ac.in/id/eprint/58603

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