Analysis of Nonlinear Dynamic for Piles under Earthquake Loading

Abstract:

The nonlinear dynamic response of piles in uniform foundation under earthquake loading is investigated. Based on the established nonlinear equations of motion of piles under earthquake loading, the approximate solution of the pile for the case of the resonance is obtained by the method of multiple scales. The effects of major parameters on seismic force are studied, such as, frequency ratio, shear wave velocity, soil thickness. And the effects of the major parameters on the frequency response curves of the pile in single layer soil are studied. Comparing with the non-resonant response of the pile, the effect of the resonance on the actual dynamic response is analyzed. The results shows that shear wave velocity and soil thickness have significant effect on the seismic force in soft clay, which have little effect on the seismic force in the other soil layers; soil thickness has the most important influence on the nonlinear dynamic response of pile and it is followed by the earthquake coefficient, the shear wave velocity in the effects.

• Periodical: Applied Mechanics and Materials (Volumes 275-277)
• Pages: 1326-1329
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.275-277.1326
• Online since: January 2013
• Authors: Jian Gen Lv, Jian Hui Qiu
• Keywords: Earthquake Loading, Nonlinear Dynamics, Pile Foundation

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