Bearing Capacity Factors for Ring Foundations

Kumar, Jyant and Chakraborty, Manash (2015) Bearing Capacity Factors for Ring Foundations. In: JOURNAL OF GEOTECHNICAL AND GEOENVIRONMENTAL ENGINEERING, 141 (10).

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Abstract

Bearing capacity factors because of the components of cohesion, surcharge, and unit weight, respectively, have been computed for smooth and rough ring footings for different combinations of r(i)= r(o) and. by using lower and upper bound theorems of the limit analysis in conjunction with finite elements and linear optimization, where r(i) and r(o) refer to the inner and outer radii of the ring, respectively. It is observed that for a smooth footing with a given value of r(o), the magnitude of the collapse load decreases continuously with an increase in r(i). Conversely, for a rough base, for a given value of r(o), hardly any reduction occurs in the magnitude of the collapse load up to r(i)= r(o) approximate to 0.2, whereas for r(i)= r(o) > 0.2, the magnitude of the collapse load, similar to that of a smooth footing, decreases continuously with an increase in r(i)= r(o). The results from the analysis compare reasonably well with available theoretical and experimental data from the literature. (C) 2015 American Society of Civil Engineers.

Item Type:	Journal Article
Publication:	JOURNAL OF GEOTECHNICAL AND GEOENVIRONMENTAL ENGINEERING
Publisher:	ASCE-AMER SOC CIVIL ENGINEERS
Additional Information:	Copy right for this article belongs to the ASCE-AMER SOC CIVIL ENGINEERS, 1801 ALEXANDER BELL DR, RESTON, VA 20191-4400 USA
Keywords:	Bearing capacity; Finite-element method; Limit analysis; Linear optimization; Plasticity; Ring foundations
Department/Centre:	Division of Mechanical Sciences > Civil Engineering
Date Deposited:	15 Oct 2015 05:40
Last Modified:	15 Oct 2015 05:40
URI:	http://eprints.iisc.ac.in/id/eprint/52546

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