Jahanger, ZK, Antony, SJ orcid.org/0000-0003-1761-6306 and Hirani, A (2020) Foundation relative stiffness effects in sand under static loading. In: AIP Conference Proceedings (IConMEAS 2019). 2nd International Conference on Materials Engineering & Science (IConMEAS 2019), 25-26 Sep 2019, Baghdad, Iraq. AIP Publishing ISBN 978-0-7354-1964-3
Abstract
In the geotechnical engineering applications, precise understandings are yet to be established on the effects of a foundation stiffness on its bearing capacity and settlement. The modern foundation construction uses the new available construction materials that totally change the relative stiffness of the footing structures–soil interactions such as waste material and landfill area of more residential purposes. Conventional bearing capacity equations were dealt with common rigid footing and thus cannot be used for reduced foundation rigidity. Therefore, this study investigates the effects of foundation relative stiffness on its load-displacement behaviour and the soil deformation field using compression test of a strip smooth footings on surface of sand of different packing densities. Nine experimental tests using three footing materials (plastic (P), rubber (R) and aluminium (A)) that differ in relative stiffness with three soil densities were used. This study has separated the effects of relative stiffness of the foundation systems on bearing capacity and settlement by defining the failure mechanism using digital particle image velocimetry (DPIV). The bearing capacity decreases as the foundation system stiffness increases. This decrease, however, is also associated with a smaller ultimate settlement. It is also apparent that a clear trend can be observed in dimensions of the slip surface when comparing rigid and flexible foundation systems. The soil particles in the failure zone under the footing have the highest vertical displacement for the increase in the rigidity of the footing system. A change in the relative stiffness of a foundation system affects the deformation of a granular media and particular analyses have been taken into the load-displacement behaviour, failure mechanisms and velocity fields.
Metadata
Item Type: | Proceedings Paper |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | Published by AIP Publishing. This is an author produced version of an article published in AIP Conference Proceedings (IConMEAS 2019). Uploaded in accordance with the publisher's self-archiving policy. |
Keywords: | Relative stiffness, sand, strip footing, bearing capacity, landfill |
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: | 19 Sep 2019 11:55 |
Last Modified: | 30 Apr 2020 14:20 |
Status: | Published |
Publisher: | AIP Publishing |
Identification Number: | 10.1063/5.0000110 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:151035 |