A new analytical approach for longitudinal vibration of floating pile groups with pile defects

Abstract

A novel analytical model is proposed to consider the effect of a defective pile on the vertical vibration of floating pile groups based on a fictitious soil pile group model. Analytical solutions for the interaction factor and dynamic impedance of floating pile groups with defects were obtained by combining superposition and longitudinal matrix transfer methods. The reasonableness and accuracy of the proposed model and derived solutions were verified by comparison with previous analytical solutions. Furthermore, numerical analyses were conducted to explore the influences of the defect degree, length, and burial depth on the pile-to-pile interaction and overall vibration characteristics within the pile groups. The results indicate that the proposed analytical model and the corresponding solutions are important for accurately assessing the safety of pile-supported structures in the presence of defects within the pile shaft.