| Abstract: | Concrete struts bearing capacity of reinforced concrete beams in torsion with practical concrete cover The analysis of an experiment database according to DIN 1045‐1 provisions shows an overestimation of the strength of the concrete strut in torsion with increasing concrete cover. In addition significant differences can be detected when comparing international design codes in relation to the concrete covers contribution to the torsional resistance of a reinforced concrete beam. In this paper experimental as well as related theoretical investigations of the concrete struts bearing capacity of reinforced concrete beams in torsion with nowadays practical concrete cover are presented. With respect to the observed influences on the failure load an approach for a safe definition of the shear flow zone thickness on the basis of DIN 1045‐1 provisions but independent of the concrete cover is derived. |
