Publication Title
Materials
Document Type
Article
Abstract/Description
To accommodate utilities in buildings, different sizes of openings are provided in the web of reinforced concrete deep beams, which cause reductions in the beam strength and stiffness. This paper aims to investigate experimentally and numerically the effectiveness of using carbon fiber reinforced polymer (CFRP) strips, as a strengthening technique, to externally strengthen reinforced concrete continuous deep beams (RCCDBs) with large openings. The experimental work included testing three RCCDBs under five-point bending. A reference specimen was prepared without openings to explore the reductions in strength and stiffness after providing large openings. Openings were created symmetrically at the center of spans of the other specimens to represent 40% of the overall beam depth. Moreover, finite elements (FE) analysis was validated using the experimental results to conduct a parametric study on RCCDBs strengthened with CFRP strips. The results confirmed reductions in the ultimate load by 21% and 7% for the un-strengthened and strengthened specimens, respectively, due to the large openings. Although the large openings caused reductions in capacities, the CFRP strips limited the deterioration by enhancing the specimen capacity by 17% relative to the un-strengthened one.
Department
Engineering and Technology
First Page
3119
Last Page
3137
DOI
10.3390/ma14113119
Volume
14
ISSN
1996-1944
Date
6-6-2021
Citation Information
Khalaf, Mohammed Riyadh; Al-Ahmed, Ali Hussein Ali; Allawi, Abbas AbdulMajeed; and El-Zohairy, Ayman, "Strengthening of Continuous Reinforced Concrete Deep Beams with Large Openings Using CFRP Strips" (2021). Faculty Publications. 225.
https://digitalcommons.tamuc.edu/cose-faculty-publications/225
