Required tie spacing to prevent inelastic local buckling of longitudinal reinforcements in RC and FRC elements
| Autor: | José R. Albiol-Ibáñez, Javier Pereiro-Barceló, José Luis Bonet Senach |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
High strength concrete
INGENIERIA DE LA CONSTRUCCION Materials science CONSTRUCCIONES ARQUITECTONICAS 0211 other engineering and technologies 020101 civil engineering Monotonic function 02 engineering and technology Fiber-reinforced concrete 0201 civil engineering law.invention law 021105 building & construction RC columns Ductility Reinforcement Civil and Structural Engineering Critical load business.industry Structural engineering Transverse plane Buckling business Buckling reinforcement |
| Zdroj: | RiuNet. Repositorio Institucional de la Universitat Politécnica de Valéncia instname |
| ISSN: | 0141-0296 2012-3264 |
| Popis: | [EN] Compressed reinforcement buckling in concrete columns can reduce ductility in structural elements. In order to avoid this, design codes propose maximum required tie spacing. Nonetheless, they do not incorporate the positive effect of concrete fibers in their formulation, whose capability of delaying buckling has been proved. For this reason, recommendations for maximum required tie spacing for elements made with concrete, with or without steel fibers, and with normal or high strength, are proposed in this article. In order to achieve this, the mixed model proposed by Pereiro-Barceló and Bonet was extended to consider elements made of HSC with and without steel fibers thanks to the results of an experimental campaign of HSC columns with and without fibers, under monotonic loading. In these tests, the buckling critical load in compressed reinforcement was experimentally determined in all the columns. In addition, a comparison of the proposed transverse concrete separation with respect to the recommendations proposed by the main existing codes was made. The research presented herein forms part of a research undertaken at the Concrete Science and Technology Institute (ICITECH) of the Universitat Politecnica de Valencia (UPV). The authors are sincerely grateful to the Spanish Ministry of Economy and Competitiveness for the help provided through Project BIA2012-32645, and to the European Union for the financial support obtained from FEDER funds. The authors wish to thank the Spanish Ministry of Education, Culture and Sport for Grant FPU12/01451. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect