EXPERIMENTAL INVESTIGATION OF THE BEHAVIOUR AND CAPACITY OF SHEATHED COLD-FORMED STEEL STUD WALLS UNDER INWARD FLEXURAL LOADING


Yilmaz F.

Ninth International Conference on THIN-WALLED STRUCTURES, ICTWS2023, Sydney, Australia, Nov 29 – Dec 1, 2023, Sydney, Avustralya, 29 Kasım 2023, ss.1

  • Yayın Türü: Bildiri / Tam Metin Bildiri
  • Basıldığı Şehir: Sydney
  • Basıldığı Ülke: Avustralya
  • Sayfa Sayıları: ss.1
  • Recep Tayyip Erdoğan Üniversitesi Adresli: Evet

Özet

A comprehensive experimental program was designed to explore the bending behaviour and capacity of cold-formed steel (CFS) stud walls clad with wood-based boards. The investigation focused on several key design parameters, such as screw spacing, board material and thickness, stud and track thicknesses, board configuration (single-sheathed, double-sheathed, and unsheathed), and the presence or absence of longitudinal seams, noggins, and track sections. The study involved fourpoint bending tests on 15 stud walls, which were sheathed with either Oriented Strand Board (OSB) or plywood. The results uncovered a surprisingly wide array of failure modes, despite the geometric simplicity of the system. The most common failure mode was simultaneous crushing of the OSB and distortional buckling of the studs, with varying degrees of shear interaction. In other cases failure was attributed to rotational and lateral-distortional deformations of the studs, often accompanied by longitudinal cracking of the boards.