Journal ArticleDOI
Vertical Vibration of Pile Groups
Mohamed Sheta,Milos Novak +1 more
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An approximate theory for vertical vibration of pile groups is presented in this article, which accounts for dynamic interaction of piles in a group, weakening of the soil around the pile due to high strain, soil layering and arbitrary tip conditions.Abstract:
An approximate theory for vertical vibration of pile groups is presented The theory accounts for dynamic interaction of piles in a group, weakening of the soil around the pile due to high strain, soil layering and arbitrary tip conditions The theory is used to study the effects of pile interaction on stiffness and damping of pile groups, distribution of internal forces in the piles and response of pile supported foundations to harmonic excitation The theory indicates that dynamic group effects can considerably differ from static group effects particularly in that the group stiffness and damping can be not only reduced by pile-soil-pile interaction but also increased depending on frequency, pile spacing and the weakening of the soil around the piles The effect of frequency is much stronger for pile groups than for single pilesread more
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Journal ArticleDOI
Simple method for dynamic stiffness and damping of floating pile groups
Ricardo Dobry,George Gazetas +1 more
TL;DR: In this article, a simple analytical solution is developed for computing the dynamic impedances of floating rigidly-capped pile groups with due consideration to pile-soil-pile interaction.
Journal ArticleDOI
Kinematic pile bending during earthquakes: analysis and field measurements
TL;DR: The passage of seismic waves through the soil surrounding a pile imposes lateral displacements and curvatures on the pile, thereby generating "kinematic" bending moments even in the absence of a su...
Journal ArticleDOI
Dynamics of piles and pile groups in layered soil media
Amir M. Kaynia,Eduardo Kausel +1 more
TL;DR: In this article, a general formulation for the dynamic response analysis of piles and pile groups in a layered halfspace is presented, and a limited number of representative results on the dynamic stiffnesses and seismic response of pile groups are presented.
Journal ArticleDOI
Dynamic pile-soil-pile interaction. part i: analysis of axial vibration
George Gazetas,Nicos Makris +1 more
TL;DR: In this paper, a simple method for computing the dynamic steady-state axial response of floating pile groups embedded in homogeneous and non-homogeneous soil deposits is presented, which is essentially independent of pile flexibility and slenderness.
Journal ArticleDOI
Dynamic analysis of piles and pile groups embedded in homogeneous soils
TL;DR: In this article, a boundary element formulation for the dynamic analysis of axially and laterally loaded single piles and pile groups is presented, where the piles are represented by compressible beam-column elements and the soil as a hysteretic elastic half-space.