Scale effects on the ultimate bearing capacity of rectangular footings placed on slopes

Yang, Shangchuan; Chen, Wei; Leshchinsky, Ben; Cui, Kai; Zhang, Fei

doi:10.1016/j.compgeo.2021.104254

Cited by 4 publications

(2 citation statements)

References 39 publications

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“…Furthermore, the size effect has also been attributed to the influence of relative density experimentally [17]. The size effect of footing on UBC has recently been investigated in some of the prominent research studies by using different analysis techniques [18][19][20][21]. However, the detailed literature review indicated that the effect of soil unit weight has not yet been widely investigated in estimating the influence of stress level on UBC.…”

Section: Introductionmentioning

confidence: 99%

1 Influence of Strip Footing Size on the Ultimate Bearing Capacity Formula for Sandy Soils

Iqbal¹

2023

GEOMATE

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For the estimation of the ultimate bearing capacity (UBC) of footings, most contemporary formulas employ a linear yield function in the shear stress-normal stress space. However, it is well known that the general property in the failure envelopes of sandy soils manifests the non-linear effect of the stress level on the peak friction angle. The focus of this research study is the assessment of the UBC of surface strip footings ascribed to the effect of confining stress level and relative density (D r ) on the shear strength of sandy soils. The rigid plastic finite element method (RPFEM), using the confining stress dependence property of Toyoura sand, is utilized in non-linear finite element analyses. The results of the UBC analyses are ascertained to be consistent with those of the centrifuge experiments in the published references. The ground failure domains in the case of the non-linear shear strength model are gleaned smaller than those in the case of the linear shear strength one. The analysis results are compared with prevailing guidelines, for instance, the Architectural Institute of Japan (AIJ) and the Japan Road Association (JRA), which are developed for the mean shear strength property of sandy soils. The applicability of the UBC formula to effective stress analysis is also discussed, and the modified formula is developed.

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Section: Introductionmentioning

confidence: 99%

1 Influence of Strip Footing Size on the Ultimate Bearing Capacity Formula for Sandy Soils

Iqbal¹

2023

GEOMATE

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“…The AUS model has recently been included in the 3D FELA software, OptumG3 [35], and it has been successfully applied to the stability problems of plate anchors [36] and caissons [37]. Apart from the recent AUS studies, FELA has previously been adopted to report numerical results for various 3D geotechnical problems, such as determining the capacity of a rigid pile with a pile cap in Zhou et al [38], the trapdoor stability problem in Shiau et al [39], the bearing capacity of footings on slopes in Yang et al [40], and the tunnel stability problem in Shiau and Al-Asadi [41][42][43].…”

Section: Introductionmentioning

confidence: 99%

Undrained Stability of Unsupported Rectangular Excavations: Anisotropy and Non-Homogeneity in 3D

et al. 2022

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The stability of unsupported rectangular excavations in undrained clay is examined under the influence of anisotropy and heterogeneity using the three-dimensional finite element upper and lower bound limit analysis with the Anisotropic Undrained Shear (AUS) failure criterion. Three anisotropic undrained shear strengths are considered in the study, namely triaxial compression, triaxial extension, and direct simple shear. Special considerations are given to the study of the linearly-increased anisotropic shear strengths with depth. The numerical solutions are presented by an undrained stability number that is a function of four dimensionless parameters, i.e., the excavated depth ratio, the aspect ratio of the excavated site, the shear strength gradient ratio, and the anisotropic strength ratio. To the authors’ best knowledge, this is the first of its kind to present the stability solutions of 3D excavation considering soil anisotropy and heterogeneity. As such, this paper introduces a novel approach for predicting the stability of unsupported rectangular excavation in undrained clays in 3D space, accounting for soil anisotropy and non-homogeneity. Notably, it develops a basis to formulate a mathematical equation and design charts for estimating the stability factor of such type of excavation, which should be of great interest to engineering practitioners.

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Application of Regression Techniques for Bearing Capacity Prediction in Aizawl

Zirsangzeli,

Ramhmachhuani,

Mozumder

2024

Indian Geotech J

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Scale effects on the ultimate bearing capacity of rectangular footings placed on slopes

Cited by 4 publications

References 39 publications

1 Influence of Strip Footing Size on the Ultimate Bearing Capacity Formula for Sandy Soils

1 Influence of Strip Footing Size on the Ultimate Bearing Capacity Formula for Sandy Soils

Undrained Stability of Unsupported Rectangular Excavations: Anisotropy and Non-Homogeneity in 3D

Application of Regression Techniques for Bearing Capacity Prediction in Aizawl

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