Analytical and Numerical Study of Second Order Effects on Pillars of Bridges in Reinforced Concrete Using Finite Element Method
Sávio Torres Melo1; Gilberto Gomes1; José Neres da Silva Filho2
1 Universidade de Brasília (UnB); 2 Universidade Federal do Rio Grande do Norte (UFRN)
doi:10.20906/CPS/CILAMCE2017-0434
Resumo
The study of second-order effects on bridge pillars becomes important due to the existing limitations to the Brazilian Norms and the small amount of research directed at bridges on this subject. The pillars are elements that together with the support devices compose the mesostructure of the bridges. They are responsible for the transmission of all loads from the superstructure to the infrastructure, generating, during transmission, the emergence of second order effects that, in pillars of great heights with differentiated geometries, influence the overall stability of the structure. Therefore, this research had as objective to do, through analytical and numerical models using the ABAQUS program via the Finite Element Method (FEM), the verification of the use of columns with simple arrangement replacing the models with multiple arrangements in order to obtain the displacements and the second order effects generated during the transmission of project acting on the bridge. In addition, were also performed an analytical-numerical correlations of two simple arrangements models of slender pillars and two cross-sections - square and circular, in order to verify the behavior of the elements in terms of displacements when compared with real cases of multiple arrangements. The numerical results found showed convergence with those obtained analytically and validated the use of simple arrangements.
Palavras-chave: Reinforced Concrete; Bridge Pillars; Second Order Effects