On the Numerical Modelling of Steel Beams Strengthened by Purely Fastened FRP Sheets

Omnia R. Abouel-Hamd, Amr M.I. Sweedan, Bilal El-Ariss, Khaled M. El-Sawy

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Strengthening of steel beams using fasteners was recently introduced by a few researchers to overcome the undesirable de bonding failure of the adhesively bonded FRP-steel beams. This paper investigates numerically the performance of steel beams strengthened by FRP sheets anchored using steel fasteners without a bonding agent. Detailed numerical models of fastened FRP-steel beams were developed using ANSYS software and verified against published experimental results. The calculated error between the experimental and numerical ultimate loads ranged from 2.6 to 10.2% proving the accuracy of the developed model. The verified model was used to evaluate the effectiveness of applying the fastening technique in enhancing the load capacity of FRP-steel beams subjected to one-point and two-point loads while adopting various FRP thicknesses of 3.175, 6.35 and 12.7 mm. Ultimate load improvements of 7.8, 20.2 and 25.8% were obtained for beams subjected to one-point load and fastened by the 3.175, 6.35 and 12.7 mm thick FRP sheets, respectively. Meanwhile, beams subjected to two-point loads showed 18.7, 21.5 and 25.2% enhancements in the ultimate load for the three thicknesses, respectively. Increasing the thickness of the FRP sheet boosted the ultimate load of the fastened FRP-steel beam; however, the ductility of the system was reduced.

Original languageEnglish
Title of host publicationProceedings of the 8th World Congress on Civil, Structural, and Environmental Engineering, CSEE 2023
EditorsHany El Naggar, Joaquim Barros, Paulo Cachim
PublisherAvestia Publishing
ISBN (Print)9781990800184
DOIs
Publication statusPublished - 2023
Event8th World Congress on Civil, Structural, and Environmental Engineering, CSEE 2023 - Virtual, Online
Duration: Mar 29 2023Mar 31 2023

Publication series

NameWorld Congress on Civil, Structural, and Environmental Engineering
ISSN (Electronic)2371-5294

Conference

Conference8th World Congress on Civil, Structural, and Environmental Engineering, CSEE 2023
CityVirtual, Online
Period3/29/233/31/23

Keywords

  • FRP sheets
  • FRP thickness
  • Steel beams
  • finite element
  • one-point load
  • steel fasteners
  • two-point loads

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Environmental Engineering

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