A Lower Bound Estimate of the Bearing Capacity of Foundations on Inherently Anisotropic Sands Implementing the Fabric Tensor

Veiskarami, Mehdi; Shokoohi, Mohammad Ali

doi:10.1007/s10706-022-02308-1

“…Thus, one of the main goals and novelties of this work is to reveal the degree of anisotropy which is typically and normally involved in soil deposits just beneath the surface foundations and also an estimate of the bearing capacity correction factor to include this effect. This factor, found theoretically by Veiskarami and Shokoohi (2023) based on the microstructure tensor, is verified against experimental data to achieve a practical range. Only granular materials (in particular, sand) has been focused.…”

Section: Introductionmentioning

confidence: 52%

“…The inherent (or induced) anisotropy however, was given less attention before 2000s and they mainly involve experimental works (Reddy and Srinivasan, 1970; Davis and Christian, 1971;Oda, 1972Oda, , 1993Meyerhof, 1978;Siddiquee et al, 2001). Recently, the number of studies on the effect of anisotropy on the bearing capacity have been increasing (Azami et al, Veiskarami and Shokoohi, 2023). Perhaps Casagrande and Carillo (1944) studied the anisotropy problem in soil mechanics for the first time.…”

Section: Introductionmentioning

confidence: 99%

“…This approach has been developed by Pietruszczak and his coworkers since late 1980s until recent days (Pietruszczak and Krucinski, 1989a,b;Mróz, 2000, 2001;Inglis and Pietruszczak, 2003;Oboudi et al, 2016;Pietruszczak and Oboudi, 2017;Pietruszczak and Pakdel, 2022), mainly based on Kanatani's (1984) concept of the directional porosity. Direct and indirect applications and extensions of this method are wide, including a series of works on the bearing capacity problem, hydraulic conductivity and hydromechanical behavior of porous materials by homogenization technique (Molaei et al, 2021; Jameei and Pietruszczak, 2020; Veiskarami et al, 2023;Jameei and Pietruszczak, 2023). The effect of anisotropy on the bearing capacity by the limit analysis, was made by by defining the directional shear strength parameters.…”

Section: Introductionmentioning

confidence: 99%

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A Lower Bound Estimate of the Bearing Capacity of Foundations on Inherently Anisotropic Sands: Verification with 100 Case Studies

Shokoohi,

Veiskarami,

Jahanandish

2024

Preprint

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Bearing capacity of transversely isotropic soils have been studied by implementing the microstructure tensor in the previous works. This paper is a counterpart of the previous theoretical one which mainly focused on the verification and physical interpretation of the results. While the previous work mainly explained the theoretical framework with some numerical verifications, this paper contains a verification made by applying the results to a number of collected database of footing load tests both in the field and in the lab. The main idea is that the natural sedimentation process makes most soils some degree of anisotropy. This anisotropy is often neglected while geotechnical studies are conducted and when the bearing capacity is calculated. In this study, a comparison with theory and experimental results tries to explore the true degree of anisotropy in natural granular soil deposits, at least for practical purposes. Results indicate that if the anisotropy is ignored, the theoretical estimate of the bearing capacity is nearly 20% to 30% higher than the actual values measured in practice. Of course the nature of the test and the interpretation of the test data are influential on this general conclusion.

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A Lower Bound Estimate of the Bearing Capacity of Foundations on Inherently Anisotropic Sands: Verification with 100 Case Studies

Shokoohi,

Veiskarami,

Jahanandish

2024

Iran J Sci Technol Trans Civ Eng

0

View full text Add to dashboard Cite

Bearing capacity of transversely isotropic soils have been studied by implementing the microstructure tensor in the previous works. This paper is a counterpart of the previous theoretical one which mainly focused on the verification and physical interpretation of the results. While the previous work mainly explained the theoretical framework with some numerical verifications, this paper contains a verification made by applying the results to a number of collected database of footing load tests both in the field and in the lab. The main idea is that the natural sedimentation process makes most soils some degree of anisotropy. This anisotropy is often neglected while geotechnical studies are conducted and when the bearing capacity is calculated. In this study, a comparison with theory and experimental results tries to explore the true degree of anisotropy in natural granular soil deposits, at least for practical purposes. Results indicate that if the anisotropy is ignored, the theoretical estimate of the bearing capacity is nearly 20% to 30% higher than the actual values measured in practice. Of course the nature of the test and the interpretation of the test data are influential on this general conclusion.

show abstract

Anisotropic Strength Identification of Sandy Cobble Soil Using Multiscale Limit Analysis

Du,

Yuan,

Ye

2025

Int. J. Geomech.

0

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A Lower Bound Estimate of the Bearing Capacity of Foundations on Inherently Anisotropic Sands Implementing the Fabric Tensor

Cited by 3 publications

References 57 publications

A Lower Bound Estimate of the Bearing Capacity of Foundations on Inherently Anisotropic Sands: Verification with 100 Case Studies

A Lower Bound Estimate of the Bearing Capacity of Foundations on Inherently Anisotropic Sands: Verification with 100 Case Studies

A Lower Bound Estimate of the Bearing Capacity of Foundations on Inherently Anisotropic Sands: Verification with 100 Case Studies

Anisotropic Strength Identification of Sandy Cobble Soil Using Multiscale Limit Analysis

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