Response of Laterally Loaded Rectangular and Circular Piles in Soils with Properties Varying with Depth
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VIEW CORRECTIONPublication: Journal of Geotechnical and Geoenvironmental Engineering
Volume 140, Issue 4
Abstract
Continuum-based analyses for laterally loaded piles with rectangular and circular cross sections are presented using solutions that can be obtained quickly without requiring any elaborate inputs for the geometry and numerical mesh. The analysis is developed by solving the differential equations governing the displacements of the pile-soil system derived using the variational principles of mechanics. Parametric studies are performed to investigate the influence of the pile cross-sectional shape, soil layering, pile slenderness ratio, and pile-soil modulus ratio on the response of laterally loaded piles in heterogeneous soil in which the soil shear modulus varies continuously or discretely with depth. The results show that piles with the same second moment of inertia have similar lateral-load response. The lateral responses of piles in two-layer systems were mainly affected by the thickness and stiffness of the top soil layer. Soil layering also influences the lateral response of piles in three-layer soil deposits consisting of two thin layers overlying the third layer. Algebraic equations for estimating the pile-head deflection and maximum bending moment are proposed that can be readily used in design. A user-friendly spreadsheet program is developed as a tool to perform calculations of pile response using the analysis. Numerical examples demonstrating the use of the analysis are provided.
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Acknowledgments
This material is based on work supported by the National Science Foundation under Grant No. 0556347. The authors are grateful for this support.
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Journal of Geotechnical and Geoenvironmental Engineering
Volume 140 • Issue 4 • April 2014
Copyright
© 2013 American Society of Civil Engineers.
History
Received: Aug 16, 2012
Accepted: Nov 1, 2013
Published online: Dec 9, 2013
Published in print: Apr 1, 2014
Discussion open until: May 9, 2014
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