Concrete floor, if connected to beams by shear studs, effectively restrains lateral-torsional buckling of these beams. Trapezoidal sheeting or sandwich panels typically connected by self-drilling screws do not have sufficient strength and stiffness to restrain lateral-torsional buckling completely. But they may help up to some point. How this lateral-torsional restraint is applied is described in this article.
In this thorough study by authors from ETH, Zürich, the results of three software of linear buckling analysis are compared: LTBeam, Abaqus, and IDEA StatiCa Member. The differences are discussed and explained. Furthermore, the results of geometrically and materially nonlinear analysis with imperfections of two software are compared: Abaqus and IDEA StatiCa Member. LTBeam does not have this functionality.
Two cross-sections are investigated:
- IPE 240
- CFC265x65