Numerical analysis of seismic performance of cold-formed composite walls with one-sided straw-board cladding

ABSTRACT In this study, we investigate the effect of paper straw board (PSB) on the seismic performance of cold-formed thin-walled steel composite walls (CFSCWs). Additionally, we compare the experimental results of CFSCW with PSB cladding with those of CFSCW with other wall panel cladding. The results show that PSB can effectively increase the shear bearing capacity of the composite wall, and because PSB is lightweight, CFSCW with PSB cladding is easy to construct. By using the finite element analysis (FEA) software ANSYS, a numerical simulation analysis of CFSCW with one-sided PSB cladding is performed, and the relevant parameters affecting the seismic performance are analyzed. The results indicate that a decrease in stud spacing, a decrease in peripheral self-tapping screw spacing, an increase in wall panel thickness, and an increase in section thickness of steel skeleton edge studs can effectively improve the shear bearing capacity and lateral stiffness within a certain range. Additionally, the decrease in the wall height-to-width ratio improves the lateral stiffness while decreasing the unit width shear bearing capacity.