Bearing Capacity Evaluation of Footing on a Layered‐Soil using ABAQUS

H, Mosadegh A Nikraz

doi:10.4172/2157-7617.1000264

Cited by 12 publications

(23 citation statements)

References 10 publications

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“…The soil thicknesses utilized in the study was e=0.15m and e=0.5m while taking into consideration that a thickness below 1m results in a greater probability of the formation of the Prandtl fault [19] which will be used as a point of reference between the analytical and numerical methods.…”

Section: Methodsmentioning

confidence: 99%

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Evaluation of Load Capacity of Stratified Soils (2 Layers) by Means of Numerical Analytical Comparison

2021

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The methods for determining load capacity in stratified soils are numerous and differ in their methods and results. These differences in analysis lead to uncertainty in engineering practices or over-dimensioning of the foundation solution. This study seeks to determine three analytical methods of load capacity in stratified soils (2 layers) for shallow foundations: 1) Imaginary foundation, 2) Average parameter method (APM), and 3) Terzaghi's method to compare their results with those obtained from numerical modeling by means of the finite element method using a widely applied software (Abaqus academic version). Within the methodology developed in the finite element modeling, variables were parameterized (modulus of elasticity, depth of deflection, and displacement-load) and two behavioral laws were evaluated (Elastic and Drucker-Prager). The results that were obtained from the analysis show that when performing numerical modeling using the law of elastic behavior in soils of two layers, exaggerated results are generated with respect to analytical methods. Another important result is that when hard soils are on top of soft soils the results of numerical and analytical methods tend to be similar to each other. Most importantly, the variables that have the greatest influence on the load capacity in soils of one and two layers are the angle of friction, yield stress, and in the case of numerical analysis the constraint displacement (load). In addition, it was observed that for numerical modeling better results are obtained when considering an elastoplastic model, such as Drucker Prager.

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Section: Methodsmentioning

confidence: 99%

“…Numerical modeling is a widely used and studied method applied to engineering foundations as seen in: [12,[18][19]. It is also accepted as a design methodology in some countries including Colombia with its building construction standard: NSR-10.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of Load Capacity of Stratified Soils (2 Layers) by Means of Numerical Analytical Comparison

2021

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“…In addition, the cohesion in the MCM for granular bases is set at 0.1 kPa to enhance the stability of numerical analysis [33,37]. Te infuence of the associated fow rule is signifcant for higher friction angles (ϕ′ > 30 °) up to 15%, as demonstrated by past researchers [53][54][55][56]. Te Mohr-Coulomb model accounts for soil dilatancy and allows the yield surface to expand based on plastic straining.…”

Section: Advances In Civil Engineeringmentioning

confidence: 99%

Estimating the Bearing Capacity of a Square Footing on a Geogrid-Stabilised Granular Layer over Clay Using the Finite Element Method

Chua¹,

Nepal

Abuel-Naga

2023

Advances in Civil Engineering

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The bearing capacity of a square footing on an unstabilised and geogrid-stabilised granular layer over clay is estimated using finite element techniques in ABAQUS (a commercial finite element software). The model incorporates a range of soil parameters and layer thicknesses. The two-layered soil system in the model assumes a strong upper granular layer and a weak lower clay layer. The parametric results of the finite element analyses are used to develop design curves with dimensionless parameters in terms of linear gradient and the ratio of the undrained shear strength of clay to the effective vertical stress of the granular layer. The design curves are compared with the published results in the literature and found to be promising. The developed design curves are applied to estimate the minimum thickness of the granular layer and are compared with other existing methods. This application illustrates the simplicity of the proposed technique and reveals that the proposed approach yields a reasonable prediction for the bearing capacity when compared with other established methods.

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“…[9], Mosadegh A. & Nikraz H. [10], Ziaie Moayed, R. et al [11], Ornek et al [12], and Calik and Sadoglu [13]. Ochiai et al [4] investigated the theory and the applications of reinforced fill over soft ground in Japan.…”

Section: Introductionmentioning

confidence: 99%

“…Mosadegh A. & Nikraz H. [10] examined the bearing capacity of a strip footing on one-layer and twolayer soils by using ABAQUS. For a layered, soft-over-strong soil, the effect of layer thickness, soil shear strength and material property on bearing capacity value and failure mechanism have been studied.…”

Section: Introductionmentioning

confidence: 99%