Chapter
Feb 8, 2016
Uplift Performance of Spun-Cast Ductile Iron Piles
Publication: Geotechnical and Structural Engineering Congress 2016
Abstract
The uplift performance of a novel piling system consisting of a spun-cast ductile iron (SCDI) tapered pile fitted with a lower helical plate, intended as an efficient foundation system for solar energy panels, is examined in this paper. Five SCDI tapered piles and two straight shafted steel piles were installed and tested at two different loading sequences in silty sand. The results showed that the tapered piles had higher uplift capacity and exhibited stiffer response at lower displacements compared to the straight shafted piles. In addition, it was observed that initial compressive loading caused a loose soil zone above the helical plate, which reduced the system stiffness at the start of the uplift loading, whereas the application of cyclic uplift loading increased the developed shaft stresses at lower displacement.
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Geotechnical and Structural Engineering Congress 2016
Pages: 1860 - 1872
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© 2016 American Society of Civil Engineers.
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Published online: Feb 8, 2016
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Geotechnical Research Centre, Univ. of Western Ontario, London, ON, Canada N6A 5B9. E-mail: [email protected]
Geotechnical Research Centre, Univ. of Western Ontario, London, ON, Canada N6A 5B9. E-mail: [email protected]
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