Modified Shear Design Model for Steel- and Fiber-Reinforced Polymer-Reinforced Concrete Beams
Article
Tarawneh, A. N., Saleh, E. F., Alghossoon, A. M., Almasabha, G. S., Alajarmeh, O. S., Manalo, A. and Benmokrane, B.. 2024. "Modified Shear Design Model for Steel- and Fiber-Reinforced Polymer-Reinforced Concrete Beams." ACI Structural Journal. 121 (1), pp. 147-158. https://doi.org/10.14359/51739191
Article Title | Modified Shear Design Model for Steel- and Fiber-Reinforced Polymer-Reinforced Concrete Beams |
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ERA Journal ID | 4142 |
Article Category | Article |
Authors | Tarawneh, A. N., Saleh, E. F., Alghossoon, A. M., Almasabha, G. S., Alajarmeh, O. S., Manalo, A. and Benmokrane, B. |
Journal Title | ACI Structural Journal |
Journal Citation | 121 (1), pp. 147-158 |
Number of Pages | 12 |
Year | 2024 |
Publisher | American Concrete Institute |
Place of Publication | United States |
ISSN | 0889-3241 |
1944-7361 | |
Digital Object Identifier (DOI) | https://doi.org/10.14359/51739191 |
Web Address (URL) | https://www.concrete.org/publications/internationalconcreteabstractsportal.aspx?m=details&id=51739191 |
Abstract | This study proposes a unified shear design provision for slender steel- and fiber-reinforced polymer (FRP)-reinforced concrete (RC) members. The proposed model is a modification of the ACI 318-19 model to include the axial stiffness of the longitudinal reinforcement by introducing a new modification term, nc, representing the elastic modular ratio of the longitudinal reinforcement to the concrete. The new relation is Vc = (0.4 [nc ρfl]1/3 λ s√fcꞌ + Nu/[6Ag])bwd. The unified shear model was assessed with five experimental data sets: FRP-RC beams without shear reinforcement (288 beams), steel-RC beams without shear reinforcement (759 beams), FRP-RC beams with shear reinforcement (56 beams), steel-RC beams with shear reinforcement (157 beams), and steel-RC beams with axial force (prestressed) but without shear reinforcement (209 beams). The unified shear model provided better performance than the ACI 318-19 and ACI CODE-440.11-22 provisions in terms of mean, coefficient of variation, standard deviation (SD), and absolute average error (AAE). The unified model also showed improved performance over a wider range of material properties. In addition, reliability analysis using Monte Carlo simulation indicated that the unified shear model provides a consistent satisfactory safety level with a reliability index between 3.5 and 4.0 for both steel- and FRP-RC members. The reliability index provided by the unified model is similar to the reliability index provided by the ACI 318-19 shear provision. In contrast, the ACI CODE-440.11-22 results in highly conservative estimates with a reliability index between 4.5 and 5.0. |
Keywords | ACI 440 |
Contains Sensitive Content | Does not contain sensitive content |
ANZSRC Field of Research 2020 | 401602. Composite and hybrid materials |
Public Notes | Files associated with this item cannot be displayed due to copyright restrictions. |
Byline Affiliations | Hashemite University, Jordan |
Centre for Future Materials | |
School of Surveying and Built Environment | |
Institute for Advanced Engineering and Space Sciences | |
University of Sherbrooke, Canada |
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