The Influence of the Shaft on the Uplift Capacity of Single-Plate Helical Pile in Clay

Helical piles with small sizes are widely used in traditional civil engineering infrastructure application, especially onshore electrical power industry. The floating offshore wind industry has taken an interest helical because of their rapid installation and ability to support immediate loading. Compared structures, structures suffer larger external load it becomes necessary increase the overall size piles, leading considerable capacity provided by shaft, which is typically neglected for a light structure. In this paper, undrained uplift was studied using finite-element limit analysis. analysis explored various diameter ratios shaft plate embedment depths, as well different interface conditions. local bearing on also attached vented failure mechanisms pile were presented explain mutual influence between anchor capacity. Algebraic expressions proposed. Engineers may use these improve accuracy estimates piles.