Vertical uplift capacity of a group of two coaxial anchors in a general c-phi soil

Kumar, Jyant and Naskar, Tarun (2012) Vertical uplift capacity of a group of two coaxial anchors in a general c-phi soil. In: Canadian Geotechnical Journal / Revue Canadienne de Géotechnique, 49 (3). pp. 367-373.

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Abstract

The vertical uplift resistance of a group of two horizontal coaxial strip anchors, embedded in a general c-phi soil (where c is the unit cohesion and phi is the soil friction angle), has been determined by using the lower bound finite element limit analysis. The variation of uplift factors F-c and F-gamma, due to the components of soil cohesion and unit weight, respectively, with changes in depth (H)/width (B) has been established for different values of vertical spacing (S)/B. As compared to a single isolated anchor, the group of two anchors provides a significantly greater magnitude of F-c for phi <= 20 degrees and with H/B >= 3. The magnitude of F-c becomes almost maximum when S/B is kept closer to 0.5H/B. On the other hand, with the same H/B, as compared to a single anchor, hardly any increase in F-gamma occurs for a group of two anchors.

Item Type:	Journal Article
Publication:	Canadian Geotechnical Journal / Revue Canadienne de Géotechnique
Publisher:	NRC Research Press
Additional Information:	Copyright of this article belongs to NRC Research Press.
Keywords:	anchors;failure;finite elements;limit analysis;optimization; soils
Department/Centre:	Division of Mechanical Sciences > Civil Engineering
Date Deposited:	28 Mar 2012 05:25
Last Modified:	28 Mar 2012 05:25
URI:	http://eprints.iisc.ac.in/id/eprint/44085

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