Comptes Rendus
Confining effect on the bearing capacity of circular footings on a purely cohesive soil
Comptes Rendus. Mécanique, Volume 330 (2002) no. 8, pp. 521-525.

The bearing capacity of axially symmetrical footings acting on a purely cohesive soil foundation contained by a rigid wall at a finite distance is investigated within the framework of the Yield design theory. Following the same tracks as in a preceding paper devoted to strip footings, the analysis is performed by referring to already existing results concerning the bearing capacity of a circular footing on a soil layer with limited thickness. It comes out that the bearing capacity factor determined by Eason and Shield for a rough circular footing on an unlimited soil foundation is increased by a correction factor that increases when the diameter of the container decreases. Comparison with the results obtained for strip footings acting on a purely cohesive soil in the same conditions shows that the confining effect is significantly lower for a circular footing than for a strip footing.

On étudie la force portante d'une fondation superficielle circulaire chargée axialement sur un demi-espace limité horizontalement par une enceinte circulaire rigide. On se place dans le cadre de la théorie du calcul à la rupture. Comme dans un article précédent, l'analyse est menée à partir des résultats déjà existants pour la portance d'une fondation circulaire sur une couche de sol d'épaisseur limitée. On montre ainsi que le facteur de capacité portante déterminé par Eason et Shield pour une fondation circulaire rugueuse sur un sol illimité doit, dans le cas présent, être multiplié par un facteur qui croit quand le diamètre de l'enceinte rigide diminue. La comparaison de ces nouveaux résultats avec ceux obtenus pour les semelles filantes dans les mêmes conditions montre que l'effet de confinement est beaucoup moins sensible pour une fondation circulaire.

Received:
Accepted:
Published online:
DOI: 10.1016/S1631-0721(02)01495-X
Keywords: soils, bearing capacity, confinement, circular footing, yield design
Mot clés : sols, calcul à la rupture, confinement, fondation circulaire, force portante

Jean Salençon 1

1 École polytechnique, Laboratoire de mécanique des solides, 91128 Palaiseau cedex, France
@article{CRMECA_2002__330_8_521_0,
     author = {Jean Salen\c{c}on},
     title = {Confining effect on the bearing capacity of circular footings on a purely cohesive soil},
     journal = {Comptes Rendus. M\'ecanique},
     pages = {521--525},
     publisher = {Elsevier},
     volume = {330},
     number = {8},
     year = {2002},
     doi = {10.1016/S1631-0721(02)01495-X},
     language = {en},
}
TY  - JOUR
AU  - Jean Salençon
TI  - Confining effect on the bearing capacity of circular footings on a purely cohesive soil
JO  - Comptes Rendus. Mécanique
PY  - 2002
SP  - 521
EP  - 525
VL  - 330
IS  - 8
PB  - Elsevier
DO  - 10.1016/S1631-0721(02)01495-X
LA  - en
ID  - CRMECA_2002__330_8_521_0
ER  - 
%0 Journal Article
%A Jean Salençon
%T Confining effect on the bearing capacity of circular footings on a purely cohesive soil
%J Comptes Rendus. Mécanique
%D 2002
%P 521-525
%V 330
%N 8
%I Elsevier
%R 10.1016/S1631-0721(02)01495-X
%G en
%F CRMECA_2002__330_8_521_0
Jean Salençon. Confining effect on the bearing capacity of circular footings on a purely cohesive soil. Comptes Rendus. Mécanique, Volume 330 (2002) no. 8, pp. 521-525. doi : 10.1016/S1631-0721(02)01495-X. https://comptes-rendus.academie-sciences.fr/mecanique/articles/10.1016/S1631-0721(02)01495-X/

[1] J. Salençon The influence of confinement on the bearing capacity of strip footings, C. R. Mecanique, Volume 330 (2002), pp. 319-326

[2] J. Salençon An introduction to the yield design theory and its applications to soil mechanics, Eur. J. Mech. A, Volume 9 (1990) no. 5, pp. 477-500

[3] A. Haar; Th. von Karman Zur Theorie der Spannungszustände in plastischen und Sandartigen Medien, Nachr. Ges. Wiss. Göttingen, Math.-Phys. Kl. (1909), pp. 204-218

[4] G. Eason; R.T. Shield The plastic indentation of a semi-infinite solid by a perfectly rough circular punch, Z.A.M.P., Volume 11 (1960), pp. 33-43

[5] J.F.W. Bishop On the complete solution to problems of deformation of a plastic rigid material, J. Mech. Phys. Solids, Volume 2 (1953) no. 1, pp. 43-53

[6] J. Salençon; M. Matar Capacité portante des fondations superficielles circulaires (Bearing capacity of axially symmetrical shallow foundations), J. Mec. Th. Appl., Volume 1 (1982) no. 2, pp. 237-267

[7] R.T. Shield Plastic potential theory and Prandtl bearing capacity solution, J. Appl. Mech. Trans. ASME, Volume 21 (1954), pp. 193-194

Cited by Sources:

Comments - Policy