Use of Filamented Beam Elements for Bored Pile Analysis
Publication: Journal of Structural Engineering
Volume 123, Issue 9
Abstract
A numerical procedure for structural analysis of bored piles is proposed that uses the composite filamented beam element. The beam stiffness about the reference axes is obtained by summing the contributions from all the concrete filaments and all the embedded reinforcements. Once the concrete has cracked at a filament, its effect on pile stiffness is neglected. This models the variation of stiffness beyond cracking loads. Soil loads on the pile are modeled by nonlinear soil springs. These springs use a modified Ramberg-Osgood model to represent the lateral response and hyperbolic function to represent axial and torsional behaviors. Before cracking, the concrete is modeled as a nonlinear elastic material. The pile postcracking torsional stiffness is also considered. The steel reinforcing bars are modeled as elastic-plastic axially loaded elements. Three numerical examples are presented to study the validity and applicability of the present method. The results obtained are compared with experimental and/or analytical work by other investigators.
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Information
Published In
Journal of Structural Engineering
Volume 123 • Issue 9 • September 1997
Pages: 1236 - 1244
Copyright
Copyright © 1997 American Society of Civil Engineers.
History
Published online: Sep 1, 1997
Published in print: Sep 1997
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