Investigation Of A Loaded Pile Responses Due To Proposed Deep Excavation In Sand Soil: Finite Element Analysis using PLAXIS 3D Program.

Document Type : Research Papers


Civil Engineering Department, Higher institute of engineering and technology


Geotechnical design engineers are giving increasing attention to how piles respond to soil movements brought on by nearby braced excavations. This study investigates the effect of deep excavation on an adjacent loaded single pile on sand soil using the PLAXIS 3D finite element program. Leung et al.'s centrifuge test results (2006) were employed to verify the numerical model. The different parameters in this study were the excavation depth, pile head type, pile diameter, and the distance between the pile and the excavation.
The results of the study showed that pile responses are significantly affected by the excavation depth (He) in relation to the pile's length (Lp). The case of (He/Lp = 2.0) leads a maximum lateral deflection at the pile toe of 24.80 % from the pile diameter. On the other hand, the lowest lateral deflection at the pile-0.85% of the pile diameter-occurs in the case where He/Lp = 0.5, which reduces. When He/Lp = 0.5, 1.0, the maximum bending moment of the pile occurs at around 0.70% normalized depth of the pile, or 230 and 298, respectively. Furthermore, the pile's response is greatly influenced by the distance between it and the excavation site; after 10 meters.


Main Subjects

Articles in Press, Accepted Manuscript
Available Online from 26 February 2024
  • Receive Date: 20 September 2023
  • Revise Date: 14 February 2024
  • Accept Date: 26 February 2024