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Helical piles; seismic response; shake table; soil-pile interaction; group behaviour; Finite Element Method
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Performance Of Single And Grouped Helical Piles Under Strong Earthquake Shaking, Abdelrahman F.F. Aly
Performance Of Single And Grouped Helical Piles Under Strong Earthquake Shaking, Abdelrahman F.F. Aly
Electronic Thesis and Dissertation Repository
Full-scale shaking table testing was conducted to evaluate the seismic performance of single and grouped helical piles. Eight circular and one square helical piles with different properties as well as one driven circular pile were installed in dry sand enclosed in a laminar soil shear box that was situated on the shaking table. Dynamic properties of sand bed and its natural frequency, as well as the natural frequencies of single and grouped helical pile-soil systems were evaluated from the collected data during different shaking events. The effects of different pile configurations as well as successive shakings on the characteristics of …