无比轻钢龙骨复合墙体受压承载力分析

Analysis on Compressive Bearing Capacity of Web Light Steel Joist Composite Wall

无比轻钢龙骨结构是一种新型冷弯薄壁型钢建筑形式,其墙体是由桁架柱和墙板共同组成的复合墙体。将墙板对柱的约束作用简化为弹性支撑,基于弹性支撑模型,对于两端简支的轴心受压墙体,推导出了考虑剪切变形影响的屈曲荷载公式。对不带墙板和带墙板的无比钢墙体按足尺模型进行了受压试验,并将试验结果与理论值进行了对比,验证了理论公式的正确性。

web light-gauge joist steel structure is a new kind of cold-formed thin-walled steel structure.Truss columns and panels constitute composite wall.Restrain of panel to stud is simplified elastic support.For the wall under centric axial compression simply supported at both ends,buckling load formula considering shear deformation is derived based on the model of spring support.Web steel wall without panel and with panel are carried out by full-scale model of the compression tests.Good agreement can be found between the experimental result and the theoretical value.