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International Journal of Geosynthetics and Ground Engineering

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01-12-2021 | Original Paper

Experimental and Numerical Modeling of Bearing Capacity of Foundations on Soft Clay Stabilized with Granular Material

Authors: Zahra Bashir Malik, Badee Alshameri, Syed Muhammad Jamil, Daanyal Umar

Published in: International Journal of Geosynthetics and Ground Engineering | Issue 4/2021

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Abstract

Over-excavation and replacement are the most commonly used ground modification techniques for shallow foundations. In soft soils, however, the extent of replacement by relatively larger (up to 19 mm) granular material was unknown. A total of 97 tests, consisting of 10 small and 87 numerical model tests, were carried out on two types of foundations, namely strip, and square. The width W and the depth of the replaced zone H were varied in each test and the ultimate bearing capacity q_u was calculated. The experimental and numerical analyses were compared by computing q_u from two methods (tangent intersection method (TIM) and 0.1B method). The improvement in q_u was plotted as the dimensionless factor bearing capacity ratio (BCR) vs. depth ratio H/B for each foundation. A significant increase in BCR was observed from H/B of 1.5 to 4 for strip foundation and 2.5 to 3 for a square foundation. There was an insignificant increase in BCR after H/B of 4 and 3 for strip and square foundations, respectively. The width of the replacement was recommended as 2B for square foundations, while no value was suggested for strip foundation owing to a steady increase in the BCR. In addition, it has been observed that the depth of replacement is a major component in improving the bearing capacity compared to the width of replacement.

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Title: Experimental and Numerical Modeling of Bearing Capacity of Foundations on Soft Clay Stabilized with Granular Material
Authors: Zahra Bashir Malik
Badee Alshameri
Syed Muhammad Jamil
Daanyal Umar
Publication date: 01-12-2021
Publisher: Springer International Publishing
Published in: International Journal of Geosynthetics and Ground Engineering / Issue 4/2021
Print ISSN: 2199-9260
Electronic ISSN: 2199-9279
DOI: https://doi.org/10.1007/s40891-021-00334-2

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