Numerical Modeling of the Degradation of the Normal Stress Under Large Number of Shearcycles
More details
Hide details
Ph.D.Student, Skikda, Algeria
Professor of Civil Engineering, Civil Engineering Department, LMGHU Laboratory, University 20 August 1955 of Skikda, Algeria
Professor of civil engineering, Laboratory 3S-R, University Grenoble Alpes, France
Online publication date: 2021-10-01
Publication date: 2021-09-01
Civil and Environmental Engineering Reports 2021;31(3):118–133
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 [1] 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.
Pra-ai, S 2013. Trials and modeling of cyclic soil-structure cyclic shear with a large number of cycles. Application to piles. Doctorat Thesis. University of Gernoble-APES.
Lim, JK and Lehane, B 2014. Shearing Resistance During Pile Installation In Sand. Journal of Geotechnical Engineering 168(3), 1-9.
Messast, S, Boulon M, and Flavigny, E 2008. Constitutive Modeling Of The Cyclic Behaviorof Sands In Drained Condition. Studia Geotechnica And Mechanica 1(2), 131-137.
El Arja, H, Abchir, Zand Burlon, S 2018. Contributions To The Dimensioning Of The Piles Under Cyclic Axial Loadins. National Days of Geotechnical and Geology Engineering.
Dob, H, Messast, S, Boulon, M and Flavigny, E 2016. Treatement of the high numbre of cycles as a pseudo-cyclic creep by analogy with the soft soil creep model. Geotech Geol Eng 34, 1985-1993.
Desai, C, Drumm, E and Zaman, M 1985. Cyclic testing and modeling of interfaces. ASCE JGE 111(6), 793-815.
Johnston, I, Lam, T and Williams, A 1987. Constant normal stiffness direct shear testing for socketed pile design in weak reak. Géotechnical 37(1), 83-89.
Al-Douri, RH, and Poulos, HG 1991. Static and cyclic shear tests on carbonate sands. ASTM-GTJ 15(2), 138-157.
Tabucanon, J, Airey, D and Poulos, H 1995. Pile skin friction in sand from constant normal stiffness test. ASTM GTJ 18(3), 350-364.
Fakharian, K and Evgin, E 1997. Cyclic simple shear behaviour of sand-steel interfaces under constant normal stiffness condition. ASCE JGGE, 123(12), 1096-1105.
Mortara, G 2001. An elastoplastic model for sand-structure interface behaviour under monotonic and cyclic, Doctorat Thesis. Politecnico di torinoitaly.
Desai, Cand Nagaraj, B 1988. Modeling for cyclic normal and shear behavior of interfaces. ASCE JGE 114(7), 1198-1217.
Aubry, D, Modaressi, A, and Modaressi, H 1990. A constitutive model for cyclic behavior of interfaces with variable dilatancy. Computers And Geotechnics 9(1/2), 47-58.
Boulon, M and Jarzebowsky, A 1991. Rate type and elasto-plastic approaches for soil-structure interface behavior: a comparison proc. 7th Int. Conf IACMAG, Carins, Australia, 305-310.
Mortara, G, Boulon, M and Ghionna, V 2002. A 2-D constitutive model for cyclic interface behavior. International Journal for Numerical and Analytical Methods in Geomechanics 26, 1071-1096.
Shahrour, I and Rezaie, F 2002. An elasto-plastic constitutive relation for soilstructure interface under cyclic loading. Computers and Geotechnics journal 52 (1), 41-50.
Pra-ai, S, Martin, A and Boulon, M 2010. Cisaillement direct cyclique sablestructure a grand nombre de cycles, essais et prémisses de modélisation.National Days of Geotechnics and Geology Engineering. Grenoble, 327-334.
Amrane, M, and Messast, S 2017. Modeling the behavior of geotechnical constructions under cyclic loading with a numerical approach based on j. lemaitre model. Indian Geotechnical Journal 48, 520-528.
Boulon, M, and Puech, A 1984. Numerical simulation of the behavior of piles under cyclic axial loading. French Geotechnical Review 26, 7-20.
Benzaria, O 2013. Contribution to the study of the behavior of isolated piles under axial cyclic loadings, Doctorat Thesis. Unversity of Pais-Est.
Boulon, M and Pra-ai, S 2016. Finite element modelling of the behaviour of piles subjected.National days of geotechnics and geology of the engineer. Nancy. 1-8.
Sivapriya, S and Muttharam, M 2018. Behaviour of cyclic laterally loaded pile group in soft clay. Indian Geotechnical Journal, 1-9.
Boulon, M and Foray, P 1986. Physical and numerical simulations of lateral shaft friction along offshore piles in sand. The 3rd Int. Conf. On numerical methods in offshore piling, Nantes, 127-147.
Murff, JD 1987. Pile capacity in calcareous sands : state of the art. Journal of Geotechnical Engineering 113(5), 490–507.
Poulos, HG. 1988. The mechanics of calcareous sediments. Proceedings of The 5th Australian–New Zealand Geomechanics Conference, Sydney, Australia, 8–41.
White, DJ and Lehane, BM 2004. Friction fatigue on displacement piles in sand. Geotechnical 54(10), 645–658.
API RP2 GEO. 2011. Geotechnical And Foundation Desgin Considerations. American Petroleum Institute.
Burland, J 1973. Shaft Friction Of Piles In Clay-A Simple Fundamental Approach. Ground Eng 6, 30-42.