A. Espinos
Polytechnic University of Valencia
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Publication
Featured researches published by A. Espinos.
Acta Polytechnica | 2009
A. Espinos; Antonio Hospitaler; Manuel L. Romero
In recent years, concrete filled tubular (CFT) columns have become popular among designers and structural engineers, due to a series of highly appreciated advantages: high load-bearing capacity, high seismic resistance, attractive appearance, reduced column footing, fast construction technology and high fire resistance without external protection. In a fire, the degradation of the material properties will cause CFT columns to become highly nonlinear and inelastic, which makes it quite difficult to predict their failure. In fact, it is still not possible for analytical methods to predict with enough accuracy the behaviour of columns of this kind when exposed to fire. Numerical models are therefore widely sought. Many numerical simulations have been carried out worldwide, without obtaining satisfactory results. This work proposes a three-dimensional numerical model for studying the actual fire behaviour of columns of this kind. This model was validated by comparing the simulation results with fire resistance tests carried out by other researchers, as well as with the predictions of the Eurocode 4 simplified calculation model.
Journal of Structural Fire Engineering | 2011
A. Espinos; Carmen Ibañez; Manuel L. Romero; Antonio Hospitaler
In this paper, the behaviour of slender axially loaded square and circular CFT columns exposed to fire is modelled using the finite element analysis package ABAQUS. A realistic sequentially coupled nonlinear thermal-stress analysis is conducted for a series of columns available in the literature. By means of this model, a comparison between fire resistance simulations results and experimental tests found in literature is made. Similarly, simulations results are compared to the Eurocode 4 simplified calculation model predictions. Comparisons show that whereas Eurocode 4 predictions are very conservative for both circular and square section CFT columns, the results obtained from the developed numerical model are much more realistic.
Journal of Constructional Steel Research | 2011
Manuel L. Romero; V. Moliner; A. Espinos; Carmen Ibañez; Antonio Hospitaler
Journal of Constructional Steel Research | 2010
A. Espinos; Manuel L. Romero; Antonio Hospitaler
Engineering Structures | 2012
A. Espinos; Manuel L. Romero; Antonio Hospitaler
Thin-walled Structures | 2011
A. Espinos; Leroy Gardner; Manuel L. Romero; Antonio Hospitaler
Journal of Constructional Steel Research | 2015
A. Espinos; Manuel L. Romero; E. Serra; Antonio Hospitaler
Engineering Structures | 2015
Manuel L. Romero; A. Espinos; J.M. Portolés; Antonio Hospitaler; Carmen Ibañez
Engineering Structures | 2013
A. Espinos; Manuel L. Romero; Antonio Hospitaler
Engineering Structures | 2016
Vicente Albero; A. Espinos; Manuel L. Romero; Antonio Hospitaler; G. Bihina; C. Renaud