Lazarini, MarianaPaula, António MiguelBraz-César, Manuel2023-01-132023-01-132021Lazarini, 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. 5093-5107http://hdl.handle.net/10198/26504Geotechnics 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.engPile groupComputational analysisAxial load capacityHorizontal load capacitySettlementGroup efficiencyHorizontal displacementsSeismic activityconference paper10.7712/120121.8851.19479