Techno Press
You logged in as Techno Press

Advances in Materials Research
  Volume 11, Number 3, September 2022 , pages 171-190

New technique for repairing circular steel beams by FRP plate
Tahar Hassaine Daouadji, Rabahi Abderezak and Benferhat Rabia

    In this paper, the problem of interfacial stresses in steel cantilever beams strengthened with bonded composite laminates is analyzed using linear elastic theory. The analysis is based on the deformation compatibility approach, where both the shear and normal stresses are assumed to be invariant across the adhesive layer thickness. The original study in this paper carried out an analytical solution to estimate shear and peel-off stresses, as, interfacial stress analysis concentration under the uniformly distributed load and shear lag deformation. The theoretical prediction is compared with authors solutions from numerous researches. This phenomenon of deformation of the members, which gives probably approach on the study of interface of the reinforced structures, is called "shear lag effect". The resolution in this paper shows that the shear stress and the normal stress are significant and, are concentrated at the end of the composite plate of reinforcement, called "edge effect". A parametric study is carried out to show the effects of the variables of design and the physical properties of materials. This research is helpful for the understanding on mechanical behaviour of the interface and design of such structures.
Key Words
    composite plate; interfacial stresses; shear lag effect; steel cantilever beam; strengthening
(1) Laboratory of Geomatics and Sustainable Development, University of Tiaret, Algeria;
(2) Department of Civil Engineering, Ibn Khaldoun University of Tiaret, Algeria.

Techno-Press: Publishers of international journals and conference proceedings.       Copyright © 2023 Techno Press
P.O. Box 33, Yuseong, Daejeon 305-600 Korea, Tel: +82-42-828-7996, Fax : +82-42-828-7997, Email: