Author： Costa D’Aguiar Sofia Modaressi Arezou Alberto dos Santos Jaime Lopez-Caballero Fernando
Publisher： NRC Research Press
ISSN： 1208-6010
Source： Canadian Geotechnical Journal, Vol.48, Iss.10, 2011-10, pp. : 1537-1550
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Abstract
The main point of this paper is to identify the key features and load transfer mechanisms controlling friction fatigue of piles under cyclic loading. Numerical modeling makes use of an advanced elastoplastic state dependent constitutive model, the ECP model, also known as Hujeux’s model. Therefore, the cyclic loading simulations allowed the identification of three levels of friction degradation, depending on the amplitude of the previous maximum load cycle. Furthermore, the analysis also offers useful insights regarding the modification of the pile static resistance once it has been cyclically loaded. All analyses are carried out considering nondisplacement piles in Toyoura sand.
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