Eventos Anais de eventos
MECSOL 2019
7th International Symposium on Solid Mechanics
Influence of pile-pile coupling conditions in the vibration of pile groups
Submission Author:
Ana Carolina Azevedo Vasconcelos , PI , Brazil
Co-Authors:
Ana Carolina Azevedo Vasconcelos, Josue Labaki
Presenter: Ana Carolina Azevedo Vasconcelos
doi://10.26678/ABCM.MECSOL2019.MSL19-0056
Abstract
This paper investigates the implications of two coupling conditions for embedded pile groups. The first is the condition in which the computation of the kinematic quantity in the direction of the loading disregards the influence of kinematic quantities in other directions. In this condition, for instance, the vertical motion of a pile in the group due to vertical loads does not take into account the influence of horizontal and rocking motion of the pile due to that vertical load. The second is the fully-coupled condition, which incorporates the effect of all degrees of freedom in each other’s response. In this work, the soil is modeled as a viscoelastic homogeneous halfspace. The piles are described by finite beam elements. Time-harmonic external excitations are considered. Some representative cases are considered for different constitutive parameters and pile group distributions. The results show that the difference between the two coupling conditions is negligible for a wide variety of pile group systems. This enables analyses to consider the coupling condition with the lowest computational cost, without loss of physical consistency of the model.
Keywords
pile groups, coupling conditions, computational cost, Soil-foundation interaction
