Performance of Finned Pile Under Torsional Load In Sand

Authors

Aalaa Khater, Tanta University - Faculty of EngineeringFollow
Ahmad Nasr Prof, Tanta University - Faculty of EngineeringFollow
Waseim Azzam Prof, Tanta University - Faculty of EngineeringFollow

Abstract

The pile foundations can experience torsional loads from earthquakes, wind, waves, offshore wind turbines, electrical transmission towers, and ship collisions in the maritime environment. Additionally, the axial load from the supporting superstructures can also cause torsional loads. This paper presents a new approach to pile modification called the finned pile. To enhance the torsional capacity of a single pile in the sand (where sand was used in a state of medium density Dr=50%), with or without fins, a number of experimental tests were conducted to investigate the effects of torsional loads (T), these studies involved varying the length, width, shape, and number of the fins in order to determine the impact of these factors on the maximum torsional capacity of the piles. The torsion-rotation response has been observed. The results showed that the fins increase the maximum torsional capacity of the piles. It was showed that the ideal fin geometry involves a length equal to 0.6 of the length of the embedded pile and a width equal to the pile's diameter. The maximum torsional capacity of the piles was found to be 4.12 N.m and 7.36 N.m. for regular pile and finned pile, respectively. The presence of such fins increased the maximum torsional capacity of the piles by about 79% under the influence of independent torsional loads (T).

Recommended Citation

Khater, Aalaa; Nasr, Ahmad Prof; and Azzam, Waseim Prof (2023) "Performance of Finned Pile Under Torsional Load In Sand," Journal of Engineering Research: Vol. 7: Iss. 6, Article 23.
Available at: https://digitalcommons.aaru.edu.jo/erjeng/vol7/iss6/23