Saint Venantsche Torsionswiderstände von Querschnitt in Sandwichbauweise

This artice presents an analytical procedure which describes the rotational behaviour of sandwich beams as built from laminated glass in structural glass applications, under Saint-Venant torsion. From this procedure an approach is derived, which allows the direct determination of a Saint-Venant tosional rigidity for sandwich cross-sections. This torsional rigidity depends only on the cross-sectional geometry and the shear moduluses of the different layers. With the cross -sectional parameter it is possible to describe the mechanical load-bearing behaviour of sandwich beams easily with the well-known engineering mechanics procedures for monolithical cross-sections.