Bending performance of SFCBs reinforced UHPC beams prestressed with FRP bars
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Publication date
2025-07Keyword
Bending performancePrestressed beam
Ultra-high-performance concrete
FRP bars
Steel-FRP composite bars
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© 2025 The Authors. Published by Elsevier Ltd. This is an open access article under the CC BY-NC-ND license ( http://creativecommons.org/licenses/by-nc-nd/4.0/ ).Peer-Reviewed
YesOpen Access status
openAccessAccepted for publication
2024-12-27
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Show full item recordAbstract
This study investigates the bending performance of ultra-high-performance concrete (UHPC) beams reinforced with non-prestressed steel-FRP composite bars (SFCBs) and prestressed fiber-reinforced polymer (FRP) bars. The finite element software ABAQUS was used to simulate the strain behaviors of materials, applying a real strain model for concrete and equivalent plastic strain models for reinforcements. Six beams with different concrete types and reinforcements (prestressed or non-prestressed) were simulated and analyzed. These simulations yielded results that closely aligned with the results tested. Based on the validated FE models, a parametric analysis was conducted to examine the effects of mechanical properties of concrete, mechanical property of non-prestressed reinforcement, and the reinforcement ratio of prestressed FRP bars and non-prestressed SFCB on the bending performance of SFCBs reinforced UHPC beams prestressed with FRP bars. The results indicate that, as the concrete strength increases from C35 to UHPC140, both the bearing capacity and ultimate deflection of flexural beams exhibit a gradual increase. Notably, employing UHPC100 as the matrix results in specimens achieving the highest ductility, deformation, and energy absorption. When non-prestressed FRP bars are replaced by SFCBs, the ultimate load of the beams decreases by 8%, but energy absorption increases by 34%. With an increase in the steel ratio of SFCBs, the ductility, deformation, and energy absorption also gradually increase. Moreover, increasing the reinforcement ratio of both prestressed FRP and non-prestressed SFCBs results in an increase in bearing capacity, but a decrease in ultimate deflection, ductility, deformation, and energy absorption capacity. This research can provide valuable technical references for the analysis and design of UHPC beams reinforced with SFCBs and prestressed FRP bars.Version
Published versionCitation
Ge W, Zhang F, Sushant S et al (2025) Bending performance of SFCBs reinforced UHPC beams prestressed with FRP bars. Case Studies in Construction Materials. 22: e04172.Link to Version of Record
https://doi.org/10.1016/j.cscm.2024.e04172Type
Articleae974a485f413a2113503eed53cd6c53
https://doi.org/10.1016/j.cscm.2024.e04172