Calculation Research On Failure Model And Bearing Capacity Of Wall-Studs System Subject To Centric Axial Loads

Cold-formed thin-wall steel residential building is one kind of important structural stylein'lightweight steel construction residential buildings introduced from outside world.Wall-studs system not only is main load-carrying member, but also takes on maintenanceaction. Which consists of wall studs (usually are cold-formed thin-wall steels with C-section),tracks (usually are cold-formed thin-wall steels with U-section) and maintenance panels(usually are OSB panels) by self-tapping screws.The further calculation research is done on failure model and bearing capacity ofwall-studs system subject to centric axial loads in this paper. The main conclusionspresented focus on five aspects:(1) Change of effective calculated length coefficient is essential reason on increase ofaxial bearing capacity of stud.(2) Space length between self-tapping screws effects on failure model.(3) Effective calculated length coefficients of stud in elastic phase are given. Effectivecalculated length coefficient is affected by flexural rigidity, geometrical length and elasticbeatings' stiffness coefficient.(4) Restrain action of tracks with U-section to studs with C-section is confirmed byratio of flexural rigidity on unit length of tracks and studs.(5) Cold-formed thin-wall steels may be main materials of low steel structureresidential building's development and Cold-formed thin-wall steel frame system may bemain system of low steel structure residential building's development at home.