Abstract
Different models of shear-strengthened calculation by means of Carbon Fiber-Reinforced Polymer (CFRP) are compared in this investigation works classified according to the way of failure. We take into account the modification of the behavior of the beam for the reinforcement in its design. The surveys show that as long as it is possible the main direction of the fibers must be perpendicular to the shear crakc. The contribution of the reinforcement to the resistance to shear-strengthened of the beam depends on the steel stirrups in the original beam. When the reinforcement strips thickness increases the resistance to shear-strengthened of the beam also increases. This relation tends to be lineal when the beam is not cracks. At last we must state that both the inclination angle of the crack and the shear-strengthened resisted by the reinforcement depend on the inclination angle of the fiber.
Highlights
The contribution of the reinforcement to the resistance to shear-strengthened of the beam depends on the steel stirrups in the original beam
At last we must state that both the inclination angle of the crack and the shear-strengthened resisted by the reinforcement depend on the inclination angle of the fiber
De hecho es posible encontrar una gran variedad de productos comerciales basados en materiales compuestos FRP en la industria de la construcción: los tendones de ARAPREE ® de SIREG, las varillas tipo POLYSTAL ® de POLYSTAL GmbH (Alemania), los laminados unidireccionales de fibra de carbono tipo CARBODUR ® y WRAP ® de SIKA (Suiza), las varillas tipo SPIFLEX ®TM, los tendones JONC J.T. ® y el tejido TFC ® (Francia)
Summary
En este trabajo de investigación se comparan diferentes modelos de cálculo de refuerzo a esfuerzo cortante mediante polímeros reforzados con fibras de carbono (CFRP) clasificados según el modo de fallo. La contribución del refuerzo a la resistencia a cortante de la viga depende de los estribos de acero existentes en la viga original. Cuando aumenta el espesor del refuerzo la resistencia a cortante de la viga se incrementa. The contribution of the reinforcement to the resistance to shear-strengthened of the beam depends on the steel stirrups in the original beam. When the reinforcement strips thickness increases the resistance to shear-strengthened of the beam increases. This relation tends to be lineal when the beam is not cracks. At last we must state that both the inclination angle of the crack and the shear-strengthened resisted by the reinforcement depend on the inclination angle of the fiber.
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