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A series of Finite Element Analyses was carried out on a Combined pile raft foundation (CPRF), using the software PLAXIS 3D, to understand the behavior of the foundation system and changes in deformation. Soil models of fine sand, coarse sand, and clay were used in the analysis to support the CPRF. It was observed that CPRF in clay was able to withstand more lateral load compared to that in sand. The raft was modeled as a plate element and the piles as embedded beams. Lateral load was applied to the foundation system. Deformation was observed in foundations with vertical piles and batter piles to find the optimum combination. Batter Piles placed in the direction opposite to the applied lateral load were observed to give lesser deformations than batter piles placed in the same direction of applied load or vertical piles. Next, a parametric study with batter angles 15°, 20°, 25°, 30° was studied. Analyses using other parameters such as varying raft depths, pile lengths, pile diameters and pile shapes were also carried out.

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Parametric Study Using PLAXIS 3D on a Piled Raft Foundation Having Batter Piles When Subjected to Lateral Load

  • 会议论文

  • 发表日期：

    2025年

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  • Illuri Reshma,
  • DR. Vinubhai Ratilal Patel

摘要

A series of Finite Element Analyses was carried out on a Combined pile raft foundation (CPRF), using the software PLAXIS 3D, to understand the behavior of the foundation system and changes in deformation. Soil models of fine sand, coarse sand, and clay were used in the analysis to support the CPRF. It was observed that CPRF in clay was able to withstand more lateral load compared to that in sand. The raft was modeled as a plate element and the piles as embedded beams. Lateral load was applied to the foundation system. Deformation was observed in foundations with vertical piles and batter piles to find the optimum combination. Batter Piles placed in the direction opposite to the applied lateral load were observed to give lesser deformations than batter piles placed in the same direction of applied load or vertical piles. Next, a parametric study with batter angles 15°, 20°, 25°, 30° was studied. Analyses using other parameters such as varying raft depths, pile lengths, pile diameters and pile shapes were also carried out.