Lateral Load Behaviour of Pile Groups

Abstract

The use of pile group foundations is widespread in supporting various structures, such as bridges, tall buildings, and offshore platforms. Among the design considerations, the lateral loading capacity of these foundations plays a crucial role in ensuring the safety and performance of the structures. This report aims to investigate the lateral loading capacity of pile group foundations using finite element software, Plaxis 3D Connect Edition V21. The methodology employed in this study involves a parametric analysis by varying key parameters known to influence the lateral loading capacity of pile group foundations. These parameters include the ground slope angle, pile spacing, pile diameter, the L/D ratio of the pile, and the pile head fixity. Prior to conducting the analysis, the accuracy and reliability of the Plaxis model were confirmed by comparing the obtained results with previously published findings. The analysis conducted reveals that the lateral loading capacity of pile group foundations is significantly influenced by the aforementioned parameters. Specifically, an increase in the ground slope angle or a decrease in the pile spacing lead to a reduction in the lateral loading capacity of the foundation. Conversely, an increase in the pile diameter and the L/D ratio of the pile enhances the lateral loading capacity of the foundation. Furthermore, it was observed that the interaction between these parameters can have a notable impact on the lateral loading capacity of the foundation.