Experimental Study on Uplift Capacity of Short Finned Piles in Sand Stabilized by Geo-jute

Abstract: The current research focuses on evaluating the uplift potential of piles with fins, which is crucial for constructing foundations for basin structure, electricity pylons, and other structures that need to withstand uplift loads. Various factors were examined, including the number of fins, the ratio of fin length to pile length (Lf/Lp), fin width, fin shape, and insertion of fins within the pile. These tests encompassed different fin position, entrenchment depth, enumerate of fins, and fin breadth. All the test results demonstrated that uplift resistance of finned piles increases with a higher Lf/Lp ratio. Moreover, for a fixed Lf/Lp ratio , the uplift-resistance of piles fabricated in sand improved as the sand's relative density increased. The number of fins exhibited a significant positive impact on the uplift resistance of finned piles. Increasing the fin width also resulted in an enhanced uplift capacity. The relative density of sand was found to have a substantial influence on the usefulness of finned piles. Rectangular-shaped fins were more resourceful than triangular fins. Positioning the fins at the pile head provided sufficient resistance to deformation. Overall, the findings specified that the uplift capacity of finned piles can be enlarged by increasing the Lf/Lp ratio (0.4), adopting a fin breadth of 1.0 times the pile dia (Dp), using wider fins, employing rectangular-shaped fins instead of triangular ones, and positioning the pile head fins.

Keywords: Uplift resistance, Relative Density, Fins, Deformation.