Numerical Modeling of the Degradation of the Normal Stress Under Large Number of Shearcycles

• Autorzy: Bellayoune Assia , Messast Salah , Boulon Marc

Identyfikatory

DOI

10.2478/ceer-2021-0037

• Języki publikacji: EN

Abstrakty

EN

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.

Słowa kluczowe

EN

bearing capacity of piles; normal stress; shear; friction; degradation; numerical modelling

PL

nośność pali; naprężenie normalne; tarcie; ścinanie; degradacja; modelowanie numeryczne

• Wydawca: Oficyna Wydawnicza Uniwersytetu Zielonogórskiego
• Czasopismo: Civil and Environmental Engineering Reports
• Rocznik: 2021
• Tom: Vol. 31, no. 3
• Strony: 118--133
• Opis fizyczny: Bibliogr. 28 poz., rys., tab., wykr.

Twórcy

autor

Bellayoune Assia

• Skikda, Algeria

autor

Messast Salah

• Civil Engineering Department, LMGHU Laboratory, University, Algeria

autor

Boulon Marc

• Laboratory 3S-R, University Grenoble Alpes, France

Bibliografia

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Uwagi

Opracowanie rekordu ze środków MNiSW, umowa Nr 461252 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2021).