STRESS IN STATIC SAND PILES - ROLE OF THE DEFORMATION IN THE CASE OF SILOS AND OEDOMETERS

Authors
Citation
P. Evesque, STRESS IN STATIC SAND PILES - ROLE OF THE DEFORMATION IN THE CASE OF SILOS AND OEDOMETERS, Journal de physique. I, 7(12), 1997, pp. 1501-1512
Citations number
29
Journal title
ISSN journal
11554304
Volume
7
Issue
12
Year of publication
1997
Pages
1501 - 1512
Database
ISI
SICI code
1155-4304(1997)7:12<1501:SISSP->2.0.ZU;2-R
Abstract
Despite a few recent approaches, which may be viewed as continuation o r rediscovery of ancient works, strain plays an important role in the mechanics of granular materials. We give an example of the importance of strain in the peculiar case of the Janssen theory of silos. A new m ethod is proposed for calculating the constant k(silo) which relates h orizontal to vertical stresses (sigma(v) = k(silo)sigma(h)). This appr oach uses Rowe's law of dilatancy and the typical stress-strain behavi ours of soil under monotorlous and cyclic loading. This k(silo) is com pared with the experimental best fit which is known as the Jaky consta nt, i.e. k(Jaky) = 1 - sin phi, where phi is the friction angle. It is found that k(silo) lies quite near the experimental one k(Jaky) = 1-s in phi.