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2021 | OriginalPaper | Chapter

An Effective Stress Framework for Bearing Capacity of Shallow Foundations in Unsaturated Soils

Authors : T. Matthew Evans, Josiah D. Baker

Published in: Proceedings of the 3rd International Conference on Sustainability in Civil Engineering

Publisher: Springer Singapore

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Abstract

This manuscript presents a theoretical framework to model the bearing capacity of shallow foundations on partially saturated soils. The conventional Vesić bearing capacity equations for shallow foundations are modified to include the effects of matric suction and varying water contents and unit weights within the effective stress framework. Suction and water content are related through the familiar van Genuchten constitutive model, thus linking suction stress to density for a homogenous soil skeleton. A closed-form solution that modifies the overburden, unit weight, and cohesion terms in the conventional Vesić equation is proposed. Bearing capacity predictions from the modified equation for shallow foundations are compared to results from model- and full-scale load tests in partially saturated soils presented in the literature, showing good agreement with observed response.

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Metadata
Title
An Effective Stress Framework for Bearing Capacity of Shallow Foundations in Unsaturated Soils
Authors
T. Matthew Evans
Josiah D. Baker
Copyright Year
2021
Publisher
Springer Singapore
Book
Proceedings of the 3rd International Conference on Sustainability in Civil Engineering

Print ISBN: 978-981-16-0052-4

Electronic ISBN: 978-981-16-0053-1

Copyright Year: 2021

DOI
https://doi.org/10.1007/978-981-16-0053-1_1