- Tytuł:
- Numerical Modeling of the Degradation of the Normal Stress Under Large Number of Shearcycles
- Autorzy:
-
Bellayoune, Assia
Messast, Salah
Boulon, Marc - Powiązania:
- https://bibliotekanauki.pl/articles/2051692.pdf
- Data publikacji:
- 2021
- Wydawca:
- Uniwersytet Zielonogórski. Oficyna Wydawnicza
- Tematy:
-
bearing capacity of piles
normal stress
shear
friction
degradation
numerical modeling
nośność pali
naprężenie normalne
tarcie
ścinanie
degradacja
modelowanie numeryczne - Opis:
- The evaluation of friction is an important element in the verification of stability and the determination of the bearing capacity of piles. In the case of cyclic stress, the soil-pile interface has a relaxation which corresponds to a fall in the horizontal stress which represents the normal stress at the lateral surface of the pile. This paper presents an explicit formulation to express the degradation of the normal stress after a large number of shear cycles as a function of cyclic parameters. In this study we are interested in the exploitation of the cyclic shear tests carried out by Pra-ai with imposed normal rigidity (CNS) in order to demonstrate the phenomenon of falling of the normal stress. The approach presented in this paper consists in proposing a simple expression for estimating the degradation of normal stress as a function of cyclic shear parameters after a large number of cycles. The validation of this approach is verified by the application of this formulation to a real case where the comparison of the simulations made by this approach with those recorded on site shows the good adaptation of this approach to this type of problems.
- Źródło:
-
Civil and Environmental Engineering Reports; 2021, 31, 3; 118-133
2080-5187
2450-8594 - Pojawia się w:
- Civil and Environmental Engineering Reports
- Dostawca treści:
- Biblioteka Nauki
Artykuł