Finite Element Investigation of the Bearing Capacity of Square Footings Resting on Sloping Ground

Acharyya, Rana; Dey, Arindam

doi:10.1007/s41403-017-0028-6

Cited by 39 publications

(14 citation statements)

References 24 publications

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“…Plaxis 2D is equipped with several features to deal with various aspects of complex geotechnical problems incorporating advanced constitutive models for analysis of time-dependent, non-linear and anisotropic behaviour of soil or rock. It has been observed from the past researches [1,22] that dry cohesionless sandy soil-slope has been considered for experimental and numerical investigation for estimating UBC of footings resting on or near the slope. In case of practical scenario, hill-slopes are made of different types of soils, ranging from fine silts, marginal soil mixtures, gravels, as well as highly weathered rock masses.…”

Section: Numerical Analysismentioning

confidence: 99%

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Finite element investigation and ANN-based prediction of the bearing capacity of strip footings resting on sloping ground

Acharyya

2019

Geo-Engineering

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The ultimate bearing capacity (UBC) of foundation is defined as the maximum stress that it can carry without undergoing a shear failure. Based on the shear strength parameters of the soil, Terzaghi [39] was the first to estimate the UBC of a strip footing placed on a uniform horizontal ground. The basic proposal for the bearing capacity of strip footings has undergone several modifications, primarily related to the bearing capacity factors, as well as inclusion of several new contributory factors [20, 29, 40]. Moreover, in order to accommodate different shapes of the footings (square, rectangular, circular or combined), shape factors were introduced in the bearing capacity expressions [20, 40]. Rapid growth of urbanization in hilly regions of India has resulted in myriads of residential and commercial constructions. The foundations of such constructions are mostly shallow, and are located either on the crest or on the benched face of the slopes. Apart from the urban constructions, transmission towers, mobile tower, retaining walls, water tanks, bridge abutments and even foundations for transportation links are mostly placed

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Section: Numerical Analysismentioning

confidence: 99%

“…4. It has been perceived from past research [1] that the unit weight of soil has negligible effect on the UBC (q u ). In the present numerical investigation, the unit weight of soil has been taken 16 kN/m 3 as constant.…”

Section: Description Of the Modellingmentioning

confidence: 99%

Finite element investigation and ANN-based prediction of the bearing capacity of strip footings resting on sloping ground

Acharyya

2019

Geo-Engineering

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“…Although finite-element or finite-difference method, combined with probabilistic analysis tools, has been implemented in the geotechnical treatments (see, e.g., [23][24][25][26][27][28][29][30][31]), very few works can be found with respect to the combination of finite-element or finite-difference method with conditional random field theory in the area of tunnel liner stability analysis and design.…”

Section: Introductionmentioning

confidence: 99%

Probabilistic Analysis of Tunnel Liner Performance Using Random Field Theory

Cheng

Cao

et al. 2019

Advances in Civil Engineering

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Tunnel liner is conventionally designed according to the deterministic design methods. However, the loads transmitted from the surrounding ground to the liner are very uncertain. In other words, the tunnel liner is subjected to nonuniform loading conditions which may affect its performance. This is mainly due to the inherent randomness and spatial variability of ground properties. In addition, since borehole drillings are usually carried out before tunnel excavation, the measured borehole data should be considered and reflected in the tunnel liner design practice, especially when it comes to the reliability-based design using the conditional random field theory. This paper presents an investigation of the tunnel liner performance from the perspective of probabilistic analysis and reliability-based design, and a probabilistic procedure for evaluating the tunnel liner performance is fully described. The random behavior of ground properties is accounted for by the conditional random field theory, and the performance of tunnel liner is examined via finite-difference modeling in FLAC 3D. The evaluation procedure is performed within the Monte Carlo simulation framework. An illustrative hypothesized tunnel is introduced to demonstrate the application of the probabilistic evaluation procedure, and the effects of site characterization parameters and conditioning on the tunnel liner performance are also inspected in a series of parametric studies. Before reaching conclusions, the reliability-based design of a real tunnel is performed with respect to the liner strengths and thickness, given target reliability levels, which provides some insights into a more reasonable and economical design of tunnel liner.

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“…Numerical modelling has also been utilised by some researchers to study the bearing capacity of footings on slopes [9,[11][12][13]. Georgiadis [12] presented a finite element analysis of the load-carrying capacity of foundations situated on slopes and compared the results with available analytical methods.…”

Section: Introductionmentioning

confidence: 99%

“…Keskin and Laman [9] validated the results from their laboratory test with a numerical modelling data. Archaryya and Dey [11] numerically studied the collapse process and bearing capacity of a foundation on top of a slope that has no cohesion. They analysed the relationship between the footing bearing capacity and the following parameters: internal friction angle of the soil, slope angle, footing embedment depth, footing width, unit weight of the soil and elastic modulus of the soil.…”

Section: Introductionmentioning

confidence: 99%

Stability analysis and design charts for a sandy soil slope supporting an embedded strip footing

Baah-Frempong

Shukla

2018

Geo-Engineering

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In several field situations, especially in the hilly terrains, the construction of footings on slopes becomes essential. The factor of safety of a slope supporting a loaded footing on the crest is dependent on the position of the footing from the crest edge. Most studies in the past have focused on analysing the bearing capacity and settlement behaviour of a footing resting on a slope crest, but foundations in most infrastructure projects are usually built at some depth below the ground surface. Therefore, the availability of some form of design charts for determining the factor of safety of a slope supporting an embedded footing will be highly useful for the practising engineers. In the current work, the finite element analysis of a sandy soil slope supporting an embedded footing was carried out using the Plaxis 2D, a finite element-based commercial software, in order to examine the effect of slope geometry, soil properties, and footing locations on the stability of slope in terms of factor of safety. The results of the analysis show that the factor of safety of the slope increases with an increase in the footing edge distance, footing depth and soil relative density, but it decreases with an increase in the slope angle and applied pressure on the footing. Some design charts have been developed along with an illustrative example to explain how these charts can be used by the practising engineers.

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Finite Element Investigation of the Bearing Capacity of Square Footings Resting on Sloping Ground

Cited by 39 publications

References 24 publications

Finite element investigation and ANN-based prediction of the bearing capacity of strip footings resting on sloping ground

Finite element investigation and ANN-based prediction of the bearing capacity of strip footings resting on sloping ground

Probabilistic Analysis of Tunnel Liner Performance Using Random Field Theory

Stability analysis and design charts for a sandy soil slope supporting an embedded strip footing

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