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A platform for research: civil engineering, architecture and urbanism
Uplift Performance of Spun-Cast Ductile Iron Piles
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.
Uplift Performance of Spun-Cast Ductile Iron Piles
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.
Uplift Performance of Spun-Cast Ductile Iron Piles
Fahmy, Ahmed (author) / El Naggar, M. Hesham (author)
Geotechnical and Structural Engineering Congress 2016 ; 2016 ; Phoenix, Arizona
2016-02-08
Conference paper
Electronic Resource
English
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