Compression behaviour of perforated steel wal studs

摘要

In this paper, the compression behaviour of web-perforated steel wal studs is studied. The series of compression tests on studs with a length of 800mm were performed between fixed ends The web perforation decreases distortional buckling strength of the section. The tests showed, however, that even a small restraint given by the perforated web has an influence on compression capacity. An analytical prediction for compression capacity was performed. The elastic distortional buckling strength was determined by replacing the perforated web part with plain plate of the same bending stiffness and the ultimate capacity was determined by using design curves given in design recommendations. The comparison showed that the method used gives reasonable results for Csections but overestimates the compression capacity of sigma-sections.