Centrifuge Modelling of Inclined Pile Foundations under Seismic Actions

Zheng Li (1) , Sandra Escoffier (2) , Panagiotis Kotronis (1)

1 GeM - Institut de Recherche en Génie Civil et Mécanique
2 IFSTTAR - Institut Français des Sciences et Technologies des Transports, de l'Aménagement et des Réseaux

The behaviour of inclined pile foundations under seismic actions is not thoroughly investigated. This paper provides new experimental data on the responses of inclined pile foundations tested using the centrifuge modelling technique. The experiments are designed to investigate soil-structure interaction. Different mock-ups are subjected to several earthquakes with low intensities and the evolution of their frequency components is identified. Experimental results are analyzed in terms of response frequencies and section forces in the piles. Numerical simulation of the soil-structure systems is conducted in the linear viscoelastic domain. Comparison of the experimental and the numerical response both in the frequency and in the time domain is satisfactory. From both the experimental and numerical results preliminary conclusions can be drawn concerning the dynamic characteristics of the soil-structure systems and the effects of inclined piles.

Mots clés: Inclined pile foundation; Centrifuge modelling; Seismic response; Soil-structure interaction; Numerical simulation

Domaines: Mécanique [physics.med-ph]; Matériaux

Zheng Li, Sandra Escoffier, Panagiotis Kotronis. Centrifuge Modelling of Inclined Pile Foundations under Seismic Actions. 15th World Conference on Earthquake Engineering, Sep 2012, Lisbon, Portugal. ⟨hal-01007970⟩