An alternative procedure for the performance assessment of FRP-retrofitted RC buildings using lumped plasticity

Lim, P. J., Mahini, S. S. and Ronagh, H. R. (2013). An alternative procedure for the performance assessment of FRP-retrofitted RC buildings using lumped plasticity. In: Riadh Al-Mahaidi, Scott T. Smith, Yu Bai and Xiao-Ling Zhao, Proceedings of the 2013 Asia-Pacific Conference on FRP in Structures (APFIS 2013). APFIS 2013: Fourth Asia-Pacific Conference on FRP in Structures, Melbourne, VIC, Australia, (1-7). 11-13 December, 2013.

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Name Description MIMEType Size Downloads
Author Lim, P. J.
Mahini, S. S.
Ronagh, H. R.
Title of paper An alternative procedure for the performance assessment of FRP-retrofitted RC buildings using lumped plasticity
Conference name APFIS 2013: Fourth Asia-Pacific Conference on FRP in Structures
Conference location Melbourne, VIC, Australia
Conference dates 11-13 December, 2013
Proceedings title Proceedings of the 2013 Asia-Pacific Conference on FRP in Structures (APFIS 2013)
Place of Publication Melbourne, VIC, Australia
Publisher International Institute for FRP in Construction (IIFC)
Publication Year 2013
Sub-type Fully published paper
Open Access Status
ISBN 9780987593016
Editor Riadh Al-Mahaidi
Scott T. Smith
Yu Bai
Xiao-Ling Zhao
Start page 1
End page 7
Total pages 7
Collection year 2014
Language eng
Formatted Abstract/Summary
A reinforced concrete (RC) building designed prior to current codes for seismic design and guidelines for detailing RC beam-column joints needs to be evaluated against the new seismic requirements. Members found to be deficient need to be monitored and subsequently retrofitted. One solution for retrofitting a deficient RC joint so as to avoid brittle joint core failure in an earthquake is to increase its ductility by shifting potential plastic hinges away from the joint. Fibre reinforced polymers (FRPs) are increasingly used to perform such retrofitting. Non-linear static (pushover) analysis can be a fast and relatively accurate method for evaluating the overall seismic performance of a regularly shaped building. It can be performed on commonly available and easy-to-use lumped-plasticity frame analysis (LPFA) computer programs, such as SAP2000. However, such programs cannot directly determine the amount of retrofitting required for each joint and its enhancing effects, a task that only a spread-plasticity frame analysis (SPFA) program can do. Therefore, time-consuming finite-element analyses (FEA) of the joints need to be performed first before transferring the properties over to the LPFA program for the pushover analysis. This paper will use a LPFA program to indirectly approximate the amount retrofitting required thus replacing the FEA step. The successful results show that this new approach can be easier and more time-efficient than current methods.
Keyword Reinforced concrete buildings
Plastic hinge relocation
FRP retrofitting
Pushover analysis
Finite element analysis
Lumped-plasticity frame analysis programs
SAP2000
Q-Index Code E1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Conference Paper
Collections: School of Civil Engineering Publications
Official 2014 Collection
 
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Created: Wed, 16 Apr 2014, 12:17:34 EST by Jon Swabey on behalf of School of Civil Engineering