Contribution of externally bonded FRP shear reinforcement to the shear strength of RC beams
| Autor: | Eva Oller, Antonio Marí, Mireia Pujol |
|---|---|
| Přispěvatelé: | Universitat Politècnica de Catalunya. Departament d'Enginyeria Civil i Ambiental, Universitat Politècnica de Catalunya. ATEM - Anàlisi i Tecnologia d'Estructures i Materials |
| Rok vydání: | 2019 |
| Předmět: |
Materials science
Shear force Concrete beams 02 engineering and technology Flange 010402 general chemistry 01 natural sciences Industrial and Manufacturing Engineering Composite material Reinforcement Mechanical Engineering Enginyeria civil::Materials i estructures::Materials i estructures de formigó [Àrees temàtiques de la UPC] Shear Shear reinforcement Fibre-reinforced plastic 021001 nanoscience & nanotechnology Shear components 0104 chemical sciences Transverse plane Shear strength Shear (geology) Mechanics of Materials Strengthening Ceramics and Composites Externally bonded FRP Bigues de formigó 0210 nano-technology Beam (structure) Sheets |
| Zdroj: | UPCommons. Portal del coneixement obert de la UPC Universitat Politècnica de Catalunya (UPC) Recercat. Dipósit de la Recerca de Catalunya instname |
| ISSN: | 1359-8368 |
| Popis: | An experimental program of T-beams strengthened in shear by CFRP sheets has been developed with two longitudinal reinforcement ratios and different externally bonded CFRP shear strengthening amounts in a discontinuous or continuous U-shaped configuration with and without mechanical anchorages. The effectiveness of the external reinforcement without anchorages was low regardless the CFRP reinforcement ratio. There is an evidence of the interaction of the different shear strength components, concrete Vc, transverse steel Vs, CFRP sheets Vf that have been obtained from the registered data of the instrumentation. This interaction might explain that the ultimate shear force of some CFRP-strengthened beams was lower than the one of the control beam. There is a significant difference between the sum of the Vc, Vs, and Vf components and the total shear force. This difference is assumed to be carried out by the flange (including its internal transverse reinforcement), which represents a significant percentage of the total shear strength (with a mean value of 38%). Finally, the contribution of the CFRP has been obtained by different existing guidelines and has been compared to the experimental values. |
| Databáze: | OpenAIRE |
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