Effect of Preloading with Consolidation on the Undrained Bearing Capacity of Ring Foundations

Abstract The undrained bearing capacity of ring foundations has received significant attention from researchers, but most of the reported studies do not reflect the effect of consolidation due to preloading. In this work, we investigated the postconsolidation undrained vertical capacity of ring foun...

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Bibliographic Details
Published in:International journal of geomechanics 2023-07, Vol.23 (7)
Main Authors: Park, Su Han, Lee, Joon Kyu
Format: Article
Language:English
Subjects:
Bearing capacity
Clay
Consolidation
Constitutive models
Foundations
Overconsolidation
Technical Papers
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Summary:Abstract The undrained bearing capacity of ring foundations has received significant attention from researchers, but most of the reported studies do not reflect the effect of consolidation due to preloading. In this work, we investigated the postconsolidation undrained vertical capacity of ring foundations resting on nonhomogeneous clays using finite differential analyses and the modified Cam-clay constitutive model. The results are presented in nondimensional form and were compared with data available in the literature. The coupling influences of the internal opening of the foundation, the magnitude of the preloading, the duration of the consolidation, and the initial overconsolidation ratio of the clay were all considered. A methodology based on approximating expressions that captured the numerical results well is proposed as a way of predicting the undrained capacity gain of ring foundations for any degree of preloading and consolidation.
ISSN:1532-3641
1943-5622
DOI:10.1061/IJGNAI.GMENG-8037