Numerical modelling of FRP strengthened RC beam-column joints

Mahini, S. S. and Ronagh, H. R. (2009) Numerical modelling of FRP strengthened RC beam-column joints. Structural Engineering and Mechanics, 32 5: 649-665.

Author Mahini, S. S.
Ronagh, H. R.
Title Numerical modelling of FRP strengthened RC beam-column joints
Journal name Structural Engineering and Mechanics   Check publisher's open access policy
ISSN 1225-4568
Publication date 2009-07-30
Year available 2009
Sub-type Article (original research)
Volume 32
Issue 5
Start page 649
End page 665
Total pages 17
Editor Chang-Koon Choi
Place of publication Daejeon, South Korea
Publisher Techno-Press
Language eng
Subject C1
870299 Construction Design not elsewhere classified
090506 Structural Engineering
Abstract This paper reports part of a comprehensive research study conducted at the University of Queensland on the ability of CFRP web-bonded systems in strengthening an exterior beam-column joint subjected to monotonic loads. One 1/2.2 scaled plain and four CFRP repaired/retrofitted joints subjected to monotonic loads were analysed using the nonlinear finite-element program ANSYS and the results were calibrated against experiments. The ANSYS model was employed in order to account for tension stiffening in concrete after cracking and a modified version of the Hognestad's model was used to model the concrete compressive strength. The stress-strain properties of main steel bars were modelled using multilinear isotropic hardening model and the FRPs were modelled as anisotropic materials. A perfect bond was assumed as nodes were shared between adjacent elements irrespective of their type. Good agreement between the numerical predictions and the experimental observation of the failure mechanisms for all specimens were observed. Closeness of these results proved that the numerical analysis can be used by design engineers for the analysis of web-bonded FRP strengthened beam-column joints with confidence.
Keyword Reinforced concrete
Fibre reinforced plastics
Finite element method
Nonlinear analysis
Q-Index Code C1
Q-Index Status Confirmed Code

Document type: Journal Article
Sub-type: Article (original research)
Collections: 2010 Higher Education Research Data Collection
School of Civil Engineering Publications
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Created: Thu, 03 Sep 2009, 17:46:45 EST by Mr Andrew Martlew on behalf of School of Civil Engineering