Assessment of the Bearing Capacity of Foundations on Rock Masses Subjected to Seismic and Seepage Loads

Galindo, Rubén; Alencar, Ana; Işık, Nihat; Marañón, Claudio Olalla

doi:10.3390/su122310063

Cited by 7 publications

(4 citation statements)

References 27 publications

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“…Keshavarz and Kumar [45] and Galindo et al [46] undertook an evaluation of the bearing capacity using the method of characteristics lines with pseudostatic load but without the consideration of the foundation width.…”

Section: Introductionmentioning

confidence: 99%

Assessment of the Bearing Capacity of Bridge Foundation on Rock Masses

Alencar¹,

Galindo²,

Marañón³

2021

Applied Sciences

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This paper aims to study the bearing capacity of a shallow foundation on rock mass, considering the most usual bridge footing width and adopting a Hoek–Brown material. The dimension of the foundation has been shown to be very significant in soils with linear failure criteria (Mohr–Coulomb envelope), and its study is necessary in the case of non-linear failure criteria, typical of rock masses. Analytical solutions do not allow incorporating this effect. A parametric study by a finite difference method was carried out, studying a wide variety of rock mass through sensitivity analysis of three geotechnical parameters: geological origin of the rock mass (mi), uniaxial compressive strength, and geological strength index. The results obtained by the numerical solution for the Hoek–Brown failure criterion were compared with the analytical results by adopting the classical hypotheses of plane strain conditions, associated flow rule, and weightless rock mass. The variation of the numerical bearing capacity due to the consideration of the self-weight of the rock mass was also analyzed since its influence is conditioned by the volume of ground mobilized and therefore by the width of the foundation. Considering the similarities observed between the numerical and analytical results, a correlation factor function of the self-weight is proposed. It can be used in conjunction with the analytical method, to estimate in a semi-analytical way the bearing capacity of a bridge foundation.

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Section: Introductionmentioning

confidence: 99%

Assessment of the Bearing Capacity of Bridge Foundation on Rock Masses

Alencar¹,

Galindo²,

Marañón³

2021

Applied Sciences

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“…Alencar et al, [20] mentioned that the bearing capacity of the rock mass is usually related to the condition of the structural geology. He noted that bearing capacity factors determined from laboratory experiments exhibit higher bearing capacity than the theoretical value, particularly for rough bearing surface and high friction angle.…”

Section: Bearing Capacity On Mohr-coulomb Failure Criterionmentioning

confidence: 99%

Bearing Capacity Equations for Intact Argillaceous and Arenaceous Rocks in Malaysia Derived from P-Wave Velocity

Nurul Huda Abdullah,

Ismacahyadi Bagus Mohamed Jais

2024

ARAM

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This paper presents the derivation of the bearing capacity equation of shallow foundations using P-wave velocity based on the seismic refraction method on argillaceous rocks (shale) and arenaceous rocks (sandstone). Various theories of bearing capacity equations were developed over the years for the calculation of bearing capacity under vertical central loading. But, the most widely used on rock is the Mohr-Coulomb failure criterion given by Meyerhof (1963). Based on this theoretical development, the empirical equation of ultimate bearing capacity was obtained. The detailed derivation of these parameters is comprised of the results from Uniaxial Compressive Strength (UCS) and P-wave velocity values. The proposed empirical equation of bearing capacity derived from P-wave velocity herewith can be used as an alternative method in designing shallow foundations. There is a good agreement on the bearing capacity determination from P-wave velocities.

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“…Recent studies focused on seepage, by applying the pseudostatic approach where the pore pressure was included as external forces in the system. Various analyses include the stability of slopes in soils (Veiskarami and Fadaie 2017); rocks (Saada et al 2012); the bearing capacity of rock (Galindo et al 2020); soil (Veiskarami and Kumar 2012;Kumar and Chakraborty 2013;Veiskarami and Habibagahi 2013); and joined rock mass (Imani et al 2012).…”

Section: Introductionmentioning

confidence: 99%

Influence of the groundwater level on the bearing capacity of shallow foundations on the rock mass

Alencar

Galindo

Melentijević

2021

Bull Eng Geol Environ

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The presence of the groundwater level (GWL) at the rock mass may significantly affect the mechanical behavior, and consequently the bearing capacity. The water particularly modifies two aspects that influence the bearing capacity: the submerged unit weight and the overall geotechnical quality of the rock mass, because water circulation tends to clean and open the joints. This paper is a study of the influence groundwater level has on the ultimate bearing capacity of shallow foundations on the rock mass. The calculations were developed using the finite difference method. The numerical results included three possible locations of groundwater level: at the foundation level, at a depth equal to a quarter of the footing width from the foundation level, and inexistent location. The analysis was based on a sensitivity study with four parameters: foundation width, rock mass type (mi), uniaxial compressive strength, and geological strength index. Included in the analysis was the influence of the self-weight of the material on the bearing capacity and the critical depth where the GWL no longer affected the bearing capacity. Finally, a simple approximation of the solution estimated in this study is suggested for practical purposes.

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Assessment of the Bearing Capacity of Foundations on Rock Masses Subjected to Seismic and Seepage Loads

Cited by 7 publications

References 27 publications

Assessment of the Bearing Capacity of Bridge Foundation on Rock Masses

Assessment of the Bearing Capacity of Bridge Foundation on Rock Masses

Bearing Capacity Equations for Intact Argillaceous and Arenaceous Rocks in Malaysia Derived from P-Wave Velocity

Influence of the groundwater level on the bearing capacity of shallow foundations on the rock mass

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