Computational modeling and parametric study of pile groups

Lazarini, Mariana; Paula, António Miguel; Braz-César, Manuel

http://hdl.handle.net/10198/26504

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Authors

Lazarini, Mariana

Paula, António Miguel

Braz-César, Manuel

Abstract(s)

Geotechnics and the study of the behavior of soil with the construction inserted in it is of extrema importance. This study aims at the computational analysis of a group of three rein- forced concrete piles with axial and horizontal loads. The piles were inserted in non-cohesive soil (medium and dense sand). The geometric parameters of the piles (diameter, distance be- tween them, and length) and physical parameters of the soil (stratification and angle of fric- tion between them) were varied. The GEO5 "Pile Group" program, the NAVFAC DM 7.2 method was used to determine the bearing capacity. The Poulos & Davis (1980) and FEM methods for settlement, and the p-y method (FEM) to determine the internal forces distribu- tion. The efficiency of the piles is more sensitive the more the distance between them varies. For settlement, Poulos & Davis values are sensitive to distance and diameter, and in FEM they are more sensitive to diameter and length variation.

Keywords

Pile group Computational analysis Axial load capacity Horizontal load capacity Settlement Group efficiency Horizontal displacements Seismic activity

URI

http://hdl.handle.net/10198/26504

Citation

Lazarini, Mariana; Paula, António Miguel; Braz-César, Manuel (2021). Computational modeling and parametric study of pile groups. In Conference on Computational Methods in Structural Dynamics and Earthquake Engineering, COMPDYN 2021. Athens. p. 5093-5107