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Prototypes and Models | Civil Engineering | Saudi Arabia | Volume 11 Issue 2, February 2022
Offshore Piles under Combined Pullout Loading
Abstract: Offshore piles are being used at harsh environment. These piles could be monopiles for supporting offshore wind turbines, or anchor piles to moor floating structures. These piles are usually subjected to a wide range of monotonic and cyclic lateral-to-inclined pullout forces. There is no design methods recommended for offshore piles subjected to inclined pullout loads. Most of the research done in this area was for lateral or tension loads on the piles. The effect of horizontal and vertical components of applied load has been assumed to be uncoupled. The present study aims mainly to provide design recommendations for offshore piles in dense sand subjected to monotonic inclined pullout loading. Three-dimensional finite element method was used to simulate the problem under study. Soil was modeled using plasticity constitutive model obeying hardening-softening rule. Soil-pile interaction was considered in the study using contact elements between pile and soil. The effect of pile installation was considered. It was found that there is a significant interaction between both tension and lateral loading. This interaction should not be neglected in the design of offshore piles.
Keywords: offshore, piles, pullout, combined, sand
Edition: Volume 11 Issue 2, February 2022,
Pages: 1301 - 1305