Effect of embedment and spacing of cojoined skirted foundation systems on undrained limit states under general loading
Effect of embedment and spacing of cojoined skirted foundation systems on undrained limit states under general loading
A foundation system may involve more than a single footing with an arrangement such that the footings are sufficiently closely spaced that adjacent footings interact. Vertical, horizontal, and moment capacity of multifooting foundation systems are potentially dependent on footing interaction, and in particular overturning capacity can be significantly enhanced by the structural rigidity of a multifooting foundation system. There is no established procedure for the calculation of bearing capacity of a shallow foundation system comprising cojoined footings and ad hoc approaches may simply involve summing the ultimate limit states of the individual footings as if they acted independently; neglecting additional capacity of the system available from the kinematic constraint provided by the structural connection between the footings. Plane strain finite-element analyses have been carried out to investigate the undrained ultimate limit states under general loading of skirted two-footing foundation systems at various normalized spacing compared to a single skirted footing of equal bearing area and embedment ratio.
Analytical techniques, Embedment, Load bearing capacity, Load factors, Numerical analysis, Shallow foundations, Spacing
267-279
Gourvenec, S.
6ff91ad8-1a91-42fe-a3f4-1b5d6f5ce0b8
Jensen, K.
fb69474e-2a75-42d8-b6b0-b6dee0b9be71
November 2009
Gourvenec, S.
6ff91ad8-1a91-42fe-a3f4-1b5d6f5ce0b8
Jensen, K.
fb69474e-2a75-42d8-b6b0-b6dee0b9be71
Gourvenec, S. and Jensen, K.
(2009)
Effect of embedment and spacing of cojoined skirted foundation systems on undrained limit states under general loading.
International Journal of Geomechanics, ASCE, 9 (6), , [002906QGM].
(doi:10.1061/(ASCE)1532-3641(2009)9:6(267)).
Abstract
A foundation system may involve more than a single footing with an arrangement such that the footings are sufficiently closely spaced that adjacent footings interact. Vertical, horizontal, and moment capacity of multifooting foundation systems are potentially dependent on footing interaction, and in particular overturning capacity can be significantly enhanced by the structural rigidity of a multifooting foundation system. There is no established procedure for the calculation of bearing capacity of a shallow foundation system comprising cojoined footings and ad hoc approaches may simply involve summing the ultimate limit states of the individual footings as if they acted independently; neglecting additional capacity of the system available from the kinematic constraint provided by the structural connection between the footings. Plane strain finite-element analyses have been carried out to investigate the undrained ultimate limit states under general loading of skirted two-footing foundation systems at various normalized spacing compared to a single skirted footing of equal bearing area and embedment ratio.
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Published date: November 2009
Keywords:
Analytical techniques, Embedment, Load bearing capacity, Load factors, Numerical analysis, Shallow foundations, Spacing
Identifiers
Local EPrints ID: 414616
URI: http://eprints.soton.ac.uk/id/eprint/414616
ISSN: 1532-3641
PURE UUID: b5032124-d74b-4bf5-9d43-4fde47a6d36d
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Date deposited: 05 Oct 2017 16:30
Last modified: 16 Mar 2024 04:31
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Author:
K. Jensen
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