Vertical uplift resistance of two horizontal strip anchors with common vertical axis

Sahoo, Jagdish Prasad and Kumar, Jyant (2012) Vertical uplift resistance of two horizontal strip anchors with common vertical axis. In: International Journal of Geotechnical Engineering, 01 October 2012, Edith Cowan University, Australia.

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Abstract

With an application of the upper bound finite element limit analysis, the vertical pullout capacity of a group of two horizontal strip plate anchors, with the common vertical axis and placed in a cohesive-frictional soil, has been computed. The variation of the uplift factors Fc, Fq and Fy, due to the contributions of soil cohesion, surcharge pressure and unit weight, respectively, has been evaluated for different combinations of S/B and H/B. As compared to single isolated anchor, the group of two anchors generates significantly greater magnitude of Fc for Φ ≤ 20° especially with greater values of H/B and under fully bonded anchor-soil interface condition. The factor Fc attains almost the maximum value when the upper anchor plate is placed midway between ground surface and the lower anchor plate. The factors Fq and Fy, on the other hand, for a group of two anchors are found to remain almost equal to that of a single isolated anchor as long as the levels of the lower plate in the group and the single isolated anchor are kept the same.

Item Type:	Conference Paper
Publisher:	W. S. Maney & Son Ltd
Additional Information:	Copyright of this article belongs to W. S. Maney & Son Ltd.
Keywords:	Anchors; Clays; Failure; Finite Elements; Limit Analysis; Optimization
Department/Centre:	Division of Mechanical Sciences > Civil Engineering
Date Deposited:	27 Mar 2014 08:56
Last Modified:	27 Mar 2014 08:56
URI:	http://eprints.iisc.ac.in/id/eprint/48800

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