Shear and torsion in hollow core slabs
Paper i proceeding, 2005

In many applications hollow core units are subjected to combined torsion and shear. The present calculation method adds stresses from various effects linearly. Here, advanced non-linear finite element modelling methods were developed and verified against full-scale tests, both for whole floors, and for individual hollow core units. By combining these two modelling methods, it is possible to design hollow core floors with arbitrary geometries and loadings for shear and torsion. Compared to the traditional approach the modelling method for units resulted in higher capacities for most ratios of shear and torsion and the floor model showed reduced torsional moments.

shear and torsion interaction

nonlinear finite elment analyses

hollow core slab

shear-torsion capacity


Helén Broo

Chalmers, Bygg- och miljöteknik, Konstruktionsteknik

Karin Lundgren

Chalmers, Bygg- och miljöteknik, Konstruktionsteknik

Björn Engström

Chalmers, Bygg- och miljöteknik, Konstruktionsteknik

Matti Pajari

Proceedings Nordic Concrete Research Meeting