A simplified analytical model for developing “t-z” curves for axially loaded piles
A simplified analytical model for developing “t-z” curves for axially loaded piles
Pile settlement estimation can be simplified using one-dimensional “t-z” curves to describe the relationship between shear stress and settlement at the pile-soil interface at a specific depth. This simplifies the two-dimensional continuum problem to that of a one-dimensional rod. Some analytical “t-z” curves are available in literature; however, to employ these solutions a suitable soil constitutive model, expressed in a flexibility form γ = γ(τ), must be chosen. This must be carefully calibrated against laboratory test data to accurately represent soil behaviour. This paper explores an alternative approach for piles in clay employing a direct similarity-based relationship between a shear stress-strain curve and a “t-z” curve. A linear-transformation factor is derived which can be applied to a representative soil test directly from the site to produce a “t-z” curve, thus removing the need to calibrate/integrate a suitable soil constitutive model. Suitable values for this factor have been obtained through comparison with existing analytical “t-z” curves.
3211-3216
Bateman, Abigail
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Crispin, Jamie J.
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Mylonakis, George
8aa37314-d7c9-4962-bcc3-9a0ce1c4537b
1 May 2022
Bateman, Abigail
f325d33d-9619-4b96-b3b9-d40bbb36d669
Crispin, Jamie J.
61fc2c73-e279-4125-a241-67eff3862904
Mylonakis, George
8aa37314-d7c9-4962-bcc3-9a0ce1c4537b
Bateman, Abigail, Crispin, Jamie J. and Mylonakis, George
(2022)
A simplified analytical model for developing “t-z” curves for axially loaded piles.
In Proceedings of 20th International Society for Soil Mechanics and Geotechnical Engineering.
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Conference or Workshop Item
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Abstract
Pile settlement estimation can be simplified using one-dimensional “t-z” curves to describe the relationship between shear stress and settlement at the pile-soil interface at a specific depth. This simplifies the two-dimensional continuum problem to that of a one-dimensional rod. Some analytical “t-z” curves are available in literature; however, to employ these solutions a suitable soil constitutive model, expressed in a flexibility form γ = γ(τ), must be chosen. This must be carefully calibrated against laboratory test data to accurately represent soil behaviour. This paper explores an alternative approach for piles in clay employing a direct similarity-based relationship between a shear stress-strain curve and a “t-z” curve. A linear-transformation factor is derived which can be applied to a representative soil test directly from the site to produce a “t-z” curve, thus removing the need to calibrate/integrate a suitable soil constitutive model. Suitable values for this factor have been obtained through comparison with existing analytical “t-z” curves.
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Bateman_Crispin_Mylonakis_2022_A_simplified_analytical_model_for_developing_t-z_curves_for_axially_loaded_piles
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Published date: 1 May 2022
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Local EPrints ID: 495846
URI: http://eprints.soton.ac.uk/id/eprint/495846
PURE UUID: e6af6383-a169-4ba7-ac71-46f5a65e585f
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Date deposited: 25 Nov 2024 17:50
Last modified: 26 Nov 2024 03:12
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Contributors
Author:
Abigail Bateman
Author:
Jamie J. Crispin
Author:
George Mylonakis
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