The stress’s state analysis of carbon fibre reinforced concrete elements evaluating the bond influence

  • Tadas Lisauskas Kaunas University of Technology
  • Mindaugas Augonis Kaunas University of Technology
  • Šarūnas Kelpša Kaunas University of Technology

Abstract

While strengthening structures with thin layered elements an important role is carried out by the bond between separate elements, but there are not any methods which would describe the distribution of shear stress in the contact zone when the concrete works plastically. In this article a single span reinforced concrete beam which is strengthened by CFRP (Carbon fiber reinforced polymer) is analysed and three methods which could describe shear stress through the length of the element are provided. The three compared methods are: finite elements method (FEM), theory of multiple rods and the proposed method of the authors. The results are provided as diagrams and the similarities and differences are discussed. The method that the authors propose is superior to other methods because it describes the plastic work of a concrete which is not possible to evaluate with the method of the multiple rods theory

DOI: http://dx.doi.org/10.5755/j01.sace.23.2.20987

Author Biographies

Tadas Lisauskas, Kaunas University of Technology

Faculty of Civil Engineering and Architecture, Department of Civil Engineering and Architecture competences centre

Mindaugas Augonis, Kaunas University of Technology
Faculty of Civil Engineering and Architecture, Department of Civil Engineering and Architecture competences centre
Published
2018-11-27
Section
Articles