Abstract Summary
Upscaling of screw piles has been proposed for offshore use in foundations and anchors. This upscaling can result in a significant increase in installation vertical forces (crowd force). Subsequent research has show that this can be reduced and even eliminated by using over-flighting techniques (installation advancement ratio, AR < 1.0), which can also improve the in-service monotonic uplift performance. This study using centrifuge experiments and discrete element modelling investigates cyclic performance of a screw pile installed at varying AR. It is founded that reducing AR can improve uplift cyclic performance.
