Stahlbetonbauteile unter einer kombinierten Beanspruchung aus Last und zentrischem Zwang

Reinforced Concrete Elements subjected to a Combined Effect of Action due to Load and Centric Restraint

In general a linear elastic analysis for bending members is useful and suitable for the determination of internal forces and moments as basis for design. This is fundamentally different in case of internal forces due to restraint and deflections, which requires a realistic non-linear calculation. The influences of cracking, creeping and shrinkage definitely have to be considered. A special problem results from the combined subjection to load and restraint. Concerning this matter, the standard DIN 1045-1 comprehends approximate rules for the deflections as well as for the crack control under the combined effects. The point is their limit of validity.