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Seismic horizontal pullout capacity of vertical anchors in sands

Kumar, Jyant (2002) Seismic horizontal pullout capacity of vertical anchors in sands. In: Canadian Geotechnical Journal / Revue Canadienne de Géotechnique, 39 (4). pp. 982-991.

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Official URL: http://www.nrcresearchpress.com/doi/abs/10.1139/t0...

Abstract

The problem of finding the horizontal pullout capacity of vertical anchors embedded in sands with the inclusion of pseudostatic horizontal earthquake body forces, was tackled in this note. The analysis was carried out using an upper bound limit analysis, with the consideration of two different collapse mechanisms: bilinear and composite logarithmic spiral rupture surfaces. The results are presented in nondimensional form to find the pullout resistance with changes in earthquake acceleration for different combinations of embedment ratio of the anchor (lambda), friction angle of the soil (phi), and the anchor-soil interface wall friction angle (delta). The pullout resistance decreases quite substantially with increases in the magnitude of the earthquake acceleration. For values of delta up to about 0.25-0.5phi, the bilinear and composite logarithmic spiral rupture surfaces gave almost identical answers, whereas for higher values of delta, the choice of the logarithmic spiral provides significantly smaller pullout resistance. The results compare favorably with the existing theoretical data.

Item Type: Journal Article
Additional Information: Copyright of this article belongs to NRC Research Press.
Department/Centre: Division of Mechanical Sciences > Civil Engineering
Date Deposited: 28 Jul 2011 07:16
Last Modified: 28 Jul 2011 07:16
URI: http://eprints.iisc.ernet.in/id/eprint/39394

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