Jahanger, ZK and Antony, SJ orcid.org/0000-0003-1761-6306 (2017) Application of Particle Image Velocimetry in the Analysis of Scale Effects in Granular Soil. International Journal of Civil, Environmental, Structural, Construction and Architectural Engineering, 11 (7). pp. 832-837.
Abstract
The available studies in the literature which dealt with the scale effects of strip footings on different sand packing systematically still remain scarce. In this research, the variation of ultimate bearing capacity and deformation pattern of soil beneath strip footings of different widths under plane-strain condition on the surface of loose, medium-dense and dense sand have been systematically studied using experimental and a noninvasive method for measuring microscopic deformations. The presented analyses are based on model scale compression test analysed using Particle Image Velocimetry (PIV) technique. Upper bound analysis of the current study shows that the maximum vertical displacement of the sand under the ultimate load increases for an increase in the width of footing, but at a decreasing rate with relative density of sand, whereas the relative vertical displacement in the sand decreases for an increase in the width of the footing. A good agreement is observed between experimental results for different footing widths and relative densities. The experimental analyses have shown that there exists pronounced scale effect for strip surface footing. The bearing capacity factors Nγ rapidly decrease up to footing widths B=0.25 m, 0.35 m, and 0.65 m for loose, medium-dense and dense sand respectively, after that there is no significant decrease in Nγ. The deformation modes of the soil as well as the ultimate bearing capacity values have been affected by the footing widths. The obtained results could be used to improve settlement calculation of the foundation interacting with granular soil.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © World Academy of Science, Engineering and Technology 2017. This is an open access article under the terms of the Creative Commons Attribution Share Alike License. |
Keywords: | PIV; Granular mechanics; scale effect; upper bound analysis |
Dates: |
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Institution: | The University of Leeds |
Academic Units: | The University of Leeds > Faculty of Engineering & Physical Sciences (Leeds) > School of Chemical & Process Engineering (Leeds) |
Depositing User: | Symplectic Publications |
Date Deposited: | 12 Jul 2017 10:24 |
Last Modified: | 05 Oct 2017 15:37 |
Published Version: | http://waset.org/publications/10007511 |
Status: | Published |
Publisher: | World Academy of Science, Engineering and Technology |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:118883 |