Shear strength model for members without shear reinforcement subjected to compression and tension

Despite more than 100 years of research efforts in structural concrete construction, the design against flexural failure for components without shear force reinforcement according to EC2 is based on an empirical equation. In the recent past, it has become clear that this approach has deficits, in particular with regard to the scale effect, the consideration of the moment of impact and the largest grain size. In addition, it was found that the approach for components under tensile stress is conservative, which z. B. is problematic for the design and recalculation of concrete silos. For this reason, in the context of the doctoral thesis of the author, a mechanically based approach was derived, which should solve the mentioned problems. The approach is based on the assumption that a constant shear stress transmission over a bending crack is necessary, in order to fulfill the essential equilibrium conditions on the concrete tooth. The failure of the mechanism required for this, the cracking, is thus the cause of the bending failure. Based on a cracking law, closed solutions for the bending load-bearing capacity of reinforced concrete beams were derived taking into account normal forces. The comparison with lateral force tests from databases shows that the effects of acting moment, scale and simultaneously acting tensile and compression normal forces are satisfactorily taken into account. The design level of the approach has been proven by means of probabilistic investigations according to DIN EN 1990, with which it can also be applied in practice. the cracking, is thus the cause of the bending failure. Based on a cracking law, closed solutions for the bending load-bearing capacity of reinforced concrete beams were derived taking into account normal forces. The comparison with lateral force tests from databases shows that the effects of acting moment, scale and simultaneously acting tensile and compression normal forces are satisfactorily taken into account. The design level of the approach has been proven by means of probabilistic investigations according to DIN EN 1990, with which it can also be applied in practice. the cracking, is thus the cause of the bending failure. Based on a cracking law, closed solutions for the bending load-bearing capacity of reinforced concrete beams were derived taking into account normal forces. The comparison with lateral force tests from databases shows that the effects of acting moment, scale and simultaneously acting tensile and compression normal forces are satisfactorily taken into account. The design level of the approach has been proven by means of probabilistic investigations according to DIN EN 1990, with which it can also be applied in practice. The comparison with lateral force tests from databases shows that the effects of acting moment, scale and simultaneously acting tensile and compression normal forces are satisfactorily taken into account. The design level of the approach has been proven by means of probabilistic investigations according to DIN EN 1990, with which it can also be applied in practice. The comparison with lateral force tests from databases shows that the effects of acting moment, scale and simultaneously acting tensile and compression normal forces are satisfactorily taken into account. The design level of the approach has been proven by means of probabilistic investigations according to DIN EN 1990, with which it can also be applied in practice.