Numerical modeling of reinforced concrete beams repaired and strengthened with SFRC
| Autor: | Domingo Sfer, Gonzalo Ruano, Bibiana Luccioni, Facundo Isla |
|---|---|
| Rok vydání: | 2015 |
| Předmět: |
Materials science
Computer simulation business.industry Shear Numerical modeling INGENIERÍAS Y TECNOLOGÍAS Fiber-reinforced concrete Structural engineering Reinforced concrete Fiber reinforced concrete Homogenization (chemistry) law.invention Mixture theory Ingeniería Civil Ingeniería Estructural law Ultimate tensile strength Strengthening Bearing capacity business Repairing Civil and Structural Engineering |
| Zdroj: | Engineering Structures. 86:168-181 |
| ISSN: | 0141-0296 |
| Popis: | Improved tensile properties of steel fiber reinforced concrete (SFRC) make it suitable for repairing and strengthening of reinforced concrete elements. The use of this material as repairing or strengthening material has increased during the last years motivating the development of numerical tools for the design of this type of intervention technique. The numerical simulation of the mechanical behavior of a series of reinforced concrete beams which includes strengthened and repaired beams with high performance self compacting SFRC tested under shear is presented in this paper. SFRC is considered as a composite material composed of concrete matrix and fibers and a simple homogenization approach based on modified mixture theory is used to model its mechanical behavior. An evolutionary algorithm is proposed in order to simulate the whole process of testing, repairing and retesting the beams. The numerical simulations can accurately reproduce flexure characterization tests and predict the bearing capacity of the repaired and strengthened beams tested under shear. Furthermore, other repairing/strengthening options are numerically studied. The numerical results could be useful to improve the design of this kind of intervention techniques. Fil: Ruano Sandoval, Gonzalo Javier. Universidad Nacional de Tucuman. Facultad de Ciencias Exactas y Tecnologia. Instituto de Estructuras "Ing. Arturo M. Guzman"; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina Fil: Isla Calderón, Facundo Andrés. Universidad Nacional de Tucuman. Facultad de Ciencias Exactas y Tecnologia. Instituto de Estructuras "Ing. Arturo M. Guzman"; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina Fil: Sfer, Domingo. Universidad Nacional de Tucuman. Facultad de Ciencias Exactas y Tecnologia. Instituto de Estructuras "Ing. Arturo M. Guzman"; Argentina Fil: Luccioni, Bibiana Maria. Universidad Nacional de Tucuman. Facultad de Ciencias Exactas y Tecnologia. Instituto de Estructuras "Ing. Arturo M. Guzman"; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina |
| Databáze: | OpenAIRE |
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