Biegeschubversuche an Stahlbetonbalken mit nachträglich eingemörtelter Querkraftbewehrung


Medium: journal article
Language(s): de 
Published in: Beton- und Stahlbetonbau, , n. 11, v. 104
Page(s): 728-736
DOI: 10.1002/best.200900042

Bending Shear Tests on R/C-Beams with Post-Installed Shear Reinforcement

A research project has been started to investigate a new method of strengthening beams with insufficient shear resistance by applying post-installed reinforcement. 10 reinforced concrete beams have been tested in shear, number and location of the inclined rebars as well as type of injection mortar have been varied. The rebars were installed in mortar-injected boreholes and anchored with metal plates at the accessible bar end. The test results confirmed that post-installed rebars can significantly increase the beam shear resistance provided they are situated properly and adequate injection mortars used. Above that the evaluation of the different contributions to shear resistance like truss action, dowel action and shear strength of compression chord provides new findings on the general shear failure mechanism in RC structures.

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