Zur Ermittlung der Normalkraft-Verlängerung und Moment-Krümmung-Beziehungen der Stahlbetonbauteile im Grenzzustand der Gebrauchstauglichkeit

About the Calculation of Displacements of Reinforced Concrete Members in the Serviceability Limit State

The verification of reinforced concrete elements for the purpose of limiting deformations has become increasingly important, often even decisive, as a result of the use of higher strength materials. A doubling of the compressive strength of a normal concrete causes an increase of about 20% in the Ec-module, and none of reinforcing steel, because Es is constant. This and, accordingly, the slender reinforced concrete elements lead to larger deformations - elongations, deflections and/or rotations - which may affect their behaviour. The determination of "axial tensile force - mean strain diagrams", respectively "bending moment - mean curvature diagrams", needed for the calculation of the displacements, is explained.