Response of anchor foundations in geogrid reinforced sand under combined loading conditions

Mukherjee, S and Sivakumar Babu, GL (2024) Response of anchor foundations in geogrid reinforced sand under combined loading conditions. In: Geosynthetics International .

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Abstract

The use of geogrid reinforcement has proven to be an effective measure to improve the anchor uplift capacity. However, previous studies are limited to analyzing the axial pullout capacity of plate anchors. In comparison, the anchor foundations employed in field are compelled to resist both uplift and lateral forces. In most cases, the foundation's safety against lateral forces dictates the design criteria for tall structures. Therefore, improving the foundation's lateral load-bearing capacity is of utmost importance. This paper presents a three-dimensional numerical analysis of anchor foundations in geogrid-reinforced sand under uplift and lateral forces. The results highlight the benefits of geogrid reinforcement on the anchor's uplift and lateral load response. The geogrid reinforcement is modelled using cable elements capturing the actual apertures responsible for tensile force mobilization along the geogrid ribs. A significant reduction in the displacements of the anchor foundation is observed in geogrid-reinforced sand, both in horizontal and vertical directions, when combined loads are applied on the anchor. However, the maximum reduction is found in the case of vertical uplift forces for higher values of the applied load. The practical implication of this study is demonstrated using a performance-based design example of transmission tower foundations in geogrid-reinforced sand. © 2023 Emerald Publishing Limited.

Item Type:	Journal Article
Publication:	Geosynthetics International
Publisher:	ICE Publishing
Additional Information:	The copyright for this article belongs to ICE Publishing.
Keywords:	Geosynthetic materials; Loads (forces); Reinforcement; Sand; Transmissions, reductions; Anchor foundation; Geogrid reinforcement; Geogrid-reinforced sands; Geogrids; Geosynthetics; Lateral force; Lateral loads; Transmission tower; Uplift forces, Foundations
Department/Centre:	Division of Mechanical Sciences > Civil Engineering
Date Deposited:	21 May 2024 04:22
Last Modified:	21 May 2024 04:22
URI:	https://eprints.iisc.ac.in/id/eprint/84495

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