Issue 50

S. R. Pereira et alii, Frattura ed Integrità Strutturale, 50 (2019) 242-250; DOI: 10.3221/IGF-ESIS.50.20 242 Focused on Structural Integrity and Safety: Experimental and Numerical Perspectives Behaviour of precast reinforced concrete columns subjected to monotonic short-term loading S. S. R. Pereira, H. Carvalho, J. V. F. Dias, V. R. Verga M. Federal University of Minas Gerais, Brazil ssrp@dees.ufmg.br, hermes@dees.ufmg.br , joaovfdias@ufmg.br, victor.verga.eng@gmail.com , P. A. Montenegro CONSTRUCT - LESE, Faculty of Engineering, University of Porto – FEUP, Portugal paires@fe.up.pt A BSTRACT . This paper presents a case study on the behaviour of precast reinforced columns with non-conventional cross-section. An experimental program was developed to verify the serviceability and ultimate limit states of these columns, loaded with eccentric compression forces. In addition, results obtained through a theoretical model based on the Brazilian standard ABNT NBR 6118:2014 and a Finite Element numerical model using ANSYS software were presented. Analysis of the results showed that the proposed models satisfactorily predicted column behaviour. However, the ultimate strength of the column could not be determined due to limitations in the formulation of the theoretical model. The numerical model presented good agreement with the experimental results, both in serviceability and in ultimate limit state. K EYWORDS . Column; Reinforced concrete; Short-term loading; Numerical modelling. Citation: Pereira, S. S. R., Carvalho, H., Dias, J. V.F., Verga M., V. R., Montenegro, P. A., Behavior of precast reinforced concrete columns subjected to monotonic short-term loading, Frattura ed Integrità Strutturale, xx (2019) 242-250. Received: 25.07.2019 Accepted: 03.09.2019 Published: 01.10.2019 Copyright: © 2019 This is an open access article under the terms of the CC-BY 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. I NTRODUCTION wo main guidelines for the use of precast concrete in the construction industry are identified: one aiming at rationalization of the execution of concrete structures and the other for construction industrialization [1]. The ABNT NBR 9062:2017 standard [2] is the technical document governing the use of precast structural elements in Brazil. It establishes requirements for the design, execution and control of reinforced or prestressed precast concrete structures, indicating criteria for the design and construction of these structures. This standard defines a precast element as the one that has been previously concreted outside the place of permanent use of the structure, and a prefabricated element as the one that has been industrially executed, in permanent installations of a company intended for this purpose. T