Database evaluation and reliability calibration for flexural strength of hybrid FRP/steel-RC Beams

Article

Tarawneh, Ahmad, Alajarmeh, Omar, Alawadi, Roaa, Amirah, Hadeel and Alramadeen, Razan. 2024. "Database evaluation and reliability calibration for flexural strength of hybrid FRP/steel-RC Beams." Composite Structures. 329. https://doi.org/10.1016/j.compstruct.2023.117758
Article Title

Database evaluation and reliability calibration for flexural strength of hybrid FRP/steel-RC Beams

ERA Journal ID3731
Article CategoryArticle
AuthorsTarawneh, Ahmad, Alajarmeh, Omar, Alawadi, Roaa, Amirah, Hadeel and Alramadeen, Razan
Journal TitleComposite Structures
Journal Citation329
Article Number117758
Number of Pages11
Year2024
PublisherElsevier
Place of PublicationUnited Kingdom
ISSN0263-8223
1879-1085
Digital Object Identifier (DOI)https://doi.org/10.1016/j.compstruct.2023.117758
Web Address (URL)https://www.sciencedirect.com/science/article/pii/S0263822323011042
AbstractConcrete beams reinforced with hybrid fiber-reinforced polymer (FRP) and steel bars combine the advantages of both FRP and steel. The corrosion resistance and service-life are improved by placing the FRP bars, while steel bars will provide better serviceability through the higher elastic modulus and better ductility through yielding. However, there are no design provisions for hybrid FRP/steel-RC members, and the design models were evaluated over limited experimental data. This study presents a statistical and reliability evaluation for designing hybrid FRP/steel-RC beams under flexure over a worldwide experimental database. The database comprises 136 hybrid FRP/steel-RC beams tested under flexure. Theoretical balanced failure states have shown the ability to correctly predict the failure mode of the specimens. Two specimens were classified inaccurately in terms of failure mode, which is attributed to the variability in the materials’ properties. Statistical evaluation for moment predictions for specimens with failure mode 2 (steel yield-concrete crushing) showed a mean, standard deviation, and coefficient of variation of 1.143, 0.169, and 14.7 %, respectively. Additionally, a reliability analysis is conducted to calibrate and recommend the strength reduction factor for the ACI 440 provisions. Targeting a reliability index of 3.5, a strength reduction factor of ϕ = 0.80 is selected as the appropriate.
KeywordsFailure mode; Hybrid reinforcement ; Fiber-Reinforced Polymer (FRP) reinforcement ; Flexural capacity ; Reliability analysis
Contains Sensitive ContentDoes not contain sensitive content
ANZSRC Field of Research 2020401602. Composite and hybrid materials
Public NotesFiles associated with this item cannot be displayed due to copyright restrictions.
Byline AffiliationsHashemite University, Jordan
Centre for Future Materials
Applied Science Private University, Jordan
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