Model Study on the Performance of Single Finned Pile in Sand under Tension Loads
AbstractA variety of structures similar to marine dolphins, dock fendering systems, tower foundations, inundated platforms, and abutments are installed on deep foundations, which are subjected to uplift loads. This paper introduces a modern pile modification strategy known as finned pile that increases pile tension capacity by providing an affirmative anchorage close to the pile tip. The alteration consists of four fins welded at the bottom of a pile around the circumferential area. Comparative small scale model uplift tests were performed on normal piles without fins and on piles with fins. Investigations were done by changing the fin width ratio (b/D) fin inclination angle (b) pile length to diameter ratio (L/D) and soil density. Results indicate that there is a considerable increase in uplift capacity of the piles when using fins at the end of the piles. When fins were installed with effective width equal to the pile diameter and at an inclination angle (b) of 90deg for sand, with relative density (Dr.