Análisis de métodos para evaluar el refuerzo a esfuerzo cortante con CFRP en vigas de hormigón armado

C. Parra; E. Martínez-Conesa; M. Valcuende; A. Garrido

doi:10.3989/ic.11.007

Authors

C. Parra Universidad Politécnica de Cartagena
E. Martínez-Conesa Universidad Politécnica de Cartagena
M. Valcuende Universitat Politècnica de València
A. Garrido Universidad Politécnica de Cartagena

DOI:

https://doi.org/10.3989/ic.11.007

Keywords:

restoration, strengthened with fiber, shear-strengthened, concrete, carbon fiber

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.

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