Axial behaviour of precast concrete panels with hollow composite reinforcing systems

Al-Fakher, Usama and Manalo, Allan ORCID: https://orcid.org/0000-0003-0493-433X and Alajarmeh, Omar ORCID: https://orcid.org/0000-0002-9446-5436 and Aravinthan, Thiru ORCID: https://orcid.org/0000-0003-0691-8296 and Zhuge, Yan and Bai, Yu and Edoo, Azam (2021) Axial behaviour of precast concrete panels with hollow composite reinforcing systems. Structures, 32. pp. 76-86. ISSN 2352-0124


Abstract

This study investigated the axial behaviour of precast concrete panels with hollow composite reinforcing systems (CRSs). These systems were provided to create voids, reduce the concrete and the self-weight of the panels. Thirteen specimens representing the unit width of a precast concrete panel were prepared and tested under concentric axial compression to investigate the effects of CRS spacing and slenderness ratio. From the experimental results, introducing the hollow core did not affect the stiffness of the panels due to the relatively small area of the hollow core at the middle of the section, while the axial capacity was reduced by 11%. On the other hand, the CRS increased the axial strength capacity and stiffness of the hollow panels by 70% and 71%, respectively as it provided additional reinforcement and stabilised the concrete core. Furthermore, narrower CRS spacing provided better structural performance than wider spacing due to the higher efficiency of the CRS and its flanges in holding together the cracked concrete. Moreover, the axial stiffness provided by the CRS prevented the global buckling failure of slender panels. Finally, a theoretical model was developed to predict axial load capacity by considering the contribution of the CRS and slenderness of the panels.


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Item Type: Article (Commonwealth Reporting Category C)
Refereed: Yes
Item Status: Live Archive
Faculty/School / Institute/Centre: Historic - Faculty of Health, Engineering and Sciences - School of Civil Engineering and Surveying (1 Jul 2013 - 31 Dec 2021)
Faculty/School / Institute/Centre: Current - Institute for Advanced Engineering and Space Sciences - Centre for Future Materials (1 Jan 2017 -)
Date Deposited: 25 Jan 2022 03:23
Last Modified: 18 Mar 2022 12:51
Uncontrolled Keywords: Axial compression; Composite reinforcing system; Hollow panel; Precast concrete
Fields of Research (2008): 09 Engineering > 0905 Civil Engineering > 090506 Structural Engineering
Fields of Research (2020): 40 ENGINEERING > 4005 Civil engineering > 400510 Structural engineering
Socio-Economic Objectives (2008): E Expanding Knowledge > 97 Expanding Knowledge > 970109 Expanding Knowledge in Engineering
Socio-Economic Objectives (2020): 28 EXPANDING KNOWLEDGE > 2801 Expanding knowledge > 280110 Expanding knowledge in engineering
Identification Number or DOI: https://doi.org/10.1016/j.istruc.2021.03.015
URI: http://eprints.usq.edu.au/id/eprint/45680

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