Investigation of the pile group effect subjected to lateral load based on finite element analysis

Tóm tắt

This study aimed to investigate the pile group effect subjected to lateral load. To achieve this scope, the finite element analysis program Plaxis 3D was used to model a single pile and a pile group with a depth of 18 m. The 2x2 pile groups spaced at 3D and 5D, where D is the pile diameter, were evaluated. The pile diameter D of the piles in the group was 0.4 m and 0.6 m. The pile groups were installed in the soil which located in Southern Vietnam. It comprised of gravel, clayey, and was underlain by stiff clay. Based on the results, it was concluded that the pile group effect is significantly dependent on the pile spacing and the pile diameter. When the pile spacing increased, the pile group effect increased. Similarly, as the pile diameter increased, the pile group effect increased. In the future, further investigation should be performed in order to study the pile group effect, including soil property, pile spacing, pile diameter, and pile length, with practical experiments to gain a better understanding of the pile group effect.