Influence of the supplementary reinforcement on the shear strength of beams with prefabricated truss stirrups

abstract: This paper presents the results of seven experimental tests in reinforced concrete wide beams, aiming to investigate their performance when subjected shear, using prefabricated truss stirrups as shear reinforcement, well a supplementary reinforcement control cracks by delamination. The main analysed variables were: position inclination and spacing between stirrups. Results showed that strength increments up 142% were obtained Furthermore, compared with theoretical estimates tested following recommendations NBR 6118 (2014), Eurocode 2 (2004), ACI 318 order evaluate safety level these codes designing elements used this paper.