Bearing capacity of ring footings placed on dense sand underlain by a loose sand layer

Khatri, Vishwas N.; Kumar, Jyant; Das, Pragyan Paramita

doi:10.1080/19648189.2020.1805643

Cited by 11 publications

(2 citation statements)

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“…This kind of foundation is well known as ring foundations, which is widely used to support axisymmetric structures such as transmission towers, silos, water towers, storage tanks, and chimneys. All previous studies regarding the bearing capacity of the ring foundations have been concerned about many kinds of soils using the MC yield criterion [16][17][18][19][20][21][22][23][24][25][26][27][28][29][30]. A more complicated issue, which is the bearing capacity of ring foundations on HB rock masses, has never been considered in the literature.…”

Section: Introductionmentioning

confidence: 99%

“…Note that the previous bearing capacity solutions are limited to the cases of circular foundations on rock masses (e.g., [11][12][13][14][15]). Note that there were only the works providing the bearing capacity solutions for either circular foundations on rock masses [11][12][13][14][15] or ring foundation on soils [16][17][18][19][20][21][22][23][24][25][26][27][28][29][30] in the past. In this study, the ring foundation has an internal radius r i and an external radius r o , and is subjected to the vertical uniform load q.…”

Section: Introductionmentioning

confidence: 99%

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Limit Analysis Solutions for Bearing Capacity of Ring Foundations on Rocks Using Hoek–Brown Failure Criterion

Yodsomjai

Keawsawasvong

Lai

2021

Int. J. of Geosynth. and Ground Eng.

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In this paper, new limit analysis solutions for the bearing capacity of ring foundations on rock masses are presented, where the Hoek-Brown yield criterion is used as a failure criterion for rock masses. The lower and upper bound finite element limit analysis is employed to derive the bearing capacity solutions of ring foundations on rock masses. The ring foundation has internal and external radii. The considered dimensionless parameters include the ratio between the internal radius and the external radius, the yield parameter, and the geological strength index of rock, where the effects of these dimensionless parameters on the bearing capacity factor are investigated. It is found that a high yield parameter or a high geological strength index yields a high value of the bearing capacity factor. When the ratio between the internal radius and the external radius is around 0.25, the bearing capacity factor becomes the largest. The collapse mechanisms of this problem are also examined and discussed in the present study.

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