Ultimate bearing capacity of equally spaced multiple strip footings on cohesionless soils without surcharge

Kouzer, KM and Kumar, Jyant (2008) Ultimate bearing capacity of equally spaced multiple strip footings on cohesionless soils without surcharge. In: International Journal for Numerical and Analytical Methods in Geomechanics, 32 (11). pp. 1417-1426.

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Abstract

The ultimate bearing capacity of a group of equally spaced multiple rough strip footings was determined due to the contribution of soil unit weight. The analysis was performed by using an upper bound theorem of limit analysis in combination with finite elements and linear programming. Along the interfaces of all the triangular elements, velocity discontinuities were considered. The value of $\xi_\gamma$ was found to increase continuously with a decrease in S/B, where (i) $\xi_\gamma$ is the ratio of the failure load of an interfering strip footing of a given width (B) to that of a single isolated strip footing having the same width and (ii) S is the clear spacing between any two adjacent footings. The effect of the $\xi_\gamma$ variation of spacing on was found to be very extensive for small values of S/B; $\xi_\gamma$ approaches infinity at S/B = 0. In all the cases, the velocity discontinuities were found to exist generally in a zone only around the footing edge.

Item Type:	Journal Article
Publication:	International Journal for Numerical and Analytical Methods in Geomechanics
Publisher:	John Wiley & Sons
Additional Information:	Copyright of this article belongs to John Wiley & Sons.
Keywords:	Bearing capacity;failure load;finite element;foundations;limit analysis.
Department/Centre:	Division of Mechanical Sciences > Civil Engineering
Date Deposited:	14 Oct 2008 04:36
Last Modified:	19 Sep 2010 04:50
URI:	http://eprints.iisc.ac.in/id/eprint/15992

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