Reinforced concrete corbels strengthened with external prestressing

  • Romulo Menk Romanichen UNIVERSIDADE ESTADUAL DE MARINGÁ
  • Rafael Alves Souza UNIVERSIDADE ESTADUAL DE MARINGÁ

Abstract

Reinforced concrete structures may demand, throughout their lifetime, the increase of the capacity load due to eventual changes in the load configuration. In this context, corbels could be considered structural elements which present great challenges for installing strengthening solutions. The referred difficulty is due to the fact that the strength capacity of this kind of element is dependent on the strength of a diagonal concrete strut and a tensile steel tie, both located in a very short region also subjected to interferences. In the present paper, the behavior of reinforced concrete corbels strengthened with external prestressing is investigated. For that, nonlinear analysis of short corbels (a/d ratio between 0,5 and 1,0), strengthened or not, have been applied. Also, analytical models based on the Strut-and-Tie Model were developed and the obtained results were compared with experimental results. The obtained results have demonstrated that strengthening reinforced concrete corbels using external prestressing is a fast, efficient and safe solution.   
Published
Mar 21, 2019
How to Cite
ROMANICHEN, Romulo Menk; SOUZA, Rafael Alves. Reinforced concrete corbels strengthened with external prestressing. RIEM - IBRACON Structures and Materials Journal, [S.l.], v. 12, n. 4, mar. 2019. ISSN 1983-4195. Available at: <http://revistas.ibracon.org.br/index.php/riem/article/view/1383>. Date accessed: 21 aug. 2019.
Section
Artigos