Prediction of Flexural Stiffness of Wooden Beams with Cross-sectional Loss that Are Reinforced with Screwed Steel Plate Based on Numerical Simulation
Pedro Ignácio Lima Gadêlha Jardim,
Elen A. M. Morales,
Túlio H. Panzera,
Fernando J. R. Mascarenhas,
Victor A. de Araujo,
Herisson F. dos Santos,
Emerson Faustino,
Diego H. de Almeida,
Francisco A. R. Lahr,
André Luis Christoforo
Affiliations
Pedro Ignácio Lima Gadêlha Jardim
Department of Civil Engineering, Federal University of São Carlos, São Carlos, Brazil; Department of Civil Engineering, Federal University of Rondônia, Porto Velho, Brazil
Elen A. M. Morales
Department of Materials Science and Engineering, Paulista State University, Itapeva, Brazil
Túlio H. Panzera
Department of Mechanical Engineering, Federal University of São João del-Rei, São João del-Rei, Minas Gerais, Brazil
Fernando J. R. Mascarenhas
University of Coimbra, Department of Civil Engineering, Coimbra, Portugal. SerQ—Forest Innovation and Competence Centre, Sertã, Portugal
Victor A. de Araujo
Department of Civil Engineering, Federal University of São Carlos, São Carlos, Brazil
Herisson F. dos Santos
Federal Institute of Education, Science and Technology of Rondônia, Ariquemes Brazil
Emerson Faustino
Federal Institute of Education, Science and Technology of Rondônia, Ariquemes, Brazil
Diego H. de Almeida
Department of Civil Engineering, Federal University of Rondônia, Porto Velho, Brazil
Francisco A. R. Lahr
Structural Engineering Department, University of São Paulo, São Carlos School of Engineering, São Carlos, Brazil
André Luis Christoforo
Department of Civil Engineering, Federal University of São Carlos, São Carlos, Brazil
As a biodegradable material, wood is subject to deterioration if proper conservation techniques are not observed. Thus, several buildings, especially those of historical heritage, present pathological manifestations that can cause accidents. The interventions in these constructions must be planned to maintain the original elements and the aesthetics of the environment, with the indication of fixing additional elements in the degraded structure. The modification of the section of structural elements is commonly observed in the literature; however, few studies have been intended to analyze the effects of reinforcement in these geometrically discontinuous elements. Furthermore, the use of screwed steel plates guarantees greater ease of execution, even though it is not yet a method that has been well explored in the scientific literature. The objective of this study was to propose an equation for estimating the flexural stiffness of wooden beams with loss of cross-section that are then reinforced with screwed steel plates using a regression model. The considered variables correlated the elastic modulus of the wood and the reinforcement, the configuration of the defect, and the reinforcement. It was possible to identify that the properties of the wood and the position of the defect were variables with a significant impact on the stiffness of the reinforced beam.
