Ductility considerations for mechanical reinforcement couplers

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Title: Ductility considerations for mechanical reinforcement couplers
Authors: Bompa, DV
Elghazouli, AY
Item Type: Journal Article
Abstract: Mechanical reinforcement couplers can offer considerable constructional and economic advantages in comparison with conventional methods of lap splicing, particularly when the requirements for seismic detailing exacerbates reinforcement congestion problems. However, the lack of specific codified guidance on ductility considerations hinders the application of mechanical couplers under inelastic conditions. To this end, this brief paper provides an overview of various reinforcement coupling systems, as well as a comparative assessment of their ‘in-air’ and ‘in-concrete’ performance, based on results extracted from a collated database. The main behavioural characteristics of different coupler forms are discussed, and their key performance parameters are compared. In addition to strength and ductility, the influence of the coupler size and arrangement on the ductility of structural members is discussed. The comparative assessments presented offer some guidance for the selection and application of mechanical reinforcement couplers in inelastic regions, and highlights areas in which further detailed investigations are required.
Issue Date: 1-Nov-2017
Date of Acceptance: 24-Aug-2017
URI: http://hdl.handle.net/10044/1/67670
DOI: https://dx.doi.org/10.1016/j.istruc.2017.08.007
ISSN: 2352-0124
Publisher: Elsevier
Start Page: 115
End Page: 119
Journal / Book Title: Structures
Volume: 12
Copyright Statement: © 2017 Institution of Structural Engineers. Published by Elsevier Ltd. All rights reserved. This manuscript is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International Licence http://creativecommons.org/licenses/by-nc-nd/4.0/
Keywords: Science & Technology
Technology
Engineering, Civil
Engineering
Reinforcement couplers
Mechanical splices
Ductility
SEISMIC PERFORMANCE
COLUMNS
Publication Status: Published
Online Publication Date: 2017-09-04
Appears in Collections:Civil and Environmental Engineering



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