Journal ArticleDOI
The response of flexible piles to lateral loading
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In this article, a parametric study was conducted using the finite element method and treating the soil as an elastic continuum with a linearly varying soil modulus, and the results of a simple algebraic expression for the active length of the pile; the ground level deformations; and the maximum bending moment down the pile were presented.Abstract:
The majority of piles encountered in practice may be regarded as ‘flexible’ under lateral loading. That is, the induced deformations and bending moments are confined to the upper part of the pile and the overall length of the pile does not significantly affect the response of the pile. The results of a parametric study, conducted using the finite element method and treating the soil as an elastic continuum with a linearly varying soil modulus, are presented as simple algebraic expressions. These expressions are similar in form to those which arise from a Winkler idealization of the soil, enabling immediate estimates to be made of: the active length of the pile; the ground level deformations; and the maximum bending moment down the pile. In addition, expressions are presented quantifying the effect of interaction between neighbouring piles. from which the behaviour of groups of piles subjected to lateral loading may be deduced. Application of the solutions is demonstrated by the analysis of lateral loading...read more
Citations
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Journal ArticleDOI
Dynamic pile‐soil‐pile interaction. Part II: Lateral and seismic response
Nicos Makris,George Gazetas +1 more
TL;DR: In this article, a simplified three-step procedure is proposed for estimating the dynamic interaction between two vertical piles, subjected either to lateral pile-head loading or to vertically-propagating seismic S-waves.
Journal ArticleDOI
Horizontal Response of Piles in Layered Soils
George Gazetas,Ricardo Dobry +1 more
TL;DR: In this article, an inexpensive and realistic procedure is developed for estimating the lateral dynamic stiffness and damping of flexible piles embedded in arbitrarily layered soil deposits, where material and radiation damping due to waves emanating at different depths from the pile-soil interface are rationally taken into account; the overall equivalent damping at the top of the pile is then obtained as a function of frequency by means of a suitable energy relationship.
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
Design of monopiles for offshore wind turbines in 10 steps
TL;DR: In this paper, a simplified way of carrying out the design of monopiles based on necessary data (i.e. the least amount of data), namely site characteristics (wind speed at reference height, wind turbulence intensity, water depth, wave height and wave period), turbine characteristics (rated power, rated wind speed, rotor diameter, cut-in and cut-out speed, mass of the rotor-nacelle-assembly) and ground profile (soil stiffness variation with depth and soil stiffness at one diameter depth).
Journal ArticleDOI
Three-dimensional nonlinear study of piles
TL;DR: In this article, the effect of nonlinear soil behavior on the axial and lateral response of piles to monotonic and cyclic loading with a view towards developing simplified, yet realistic models for representing pile-soil-pile interaction effects is examined by means of a three-dimensional finite element elastoplastic model that includes interface elements for representing slippage and pile•soil separation.
References
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Journal ArticleDOI
Structural analysis of axisymmetric solids.
TL;DR: In this paper, the finite element idealization is used as the basic numerical procedure for the stress analysis of complex axisymmetric structures of arbitrary shape subjected to thermal and mechanical loads.
Journal ArticleDOI
The behaviour of axially and laterally loaded single piles embedded in nonhomogeneous soils
P. K. Banerjee,T. G. Davies +1 more
TL;DR: In this article, an approximate elastic analysis is made of the working load responses of single piles embedded in a soil of linearly increasing modulus with depth, which is of comparable generality and computational efficiency to earlier elastic solutions of the corresponding homogeneous problem.
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Soil Modulus for Laterally Loaded Piles
TL;DR: In this paper, a tentative procedure for estimating soil modulus of pile reaction is developed for problems involving transient loads; correlation derived is based on similitude on logarithmic paper of laboratory stress strain curve and soil reaction deflection curves from pile test.