ABSTRACT
The cold-formed thin-walled steel members are simple to process and convenient to connect, but their plates are thin in the wall and large in width and thickness. For the uniaxial symmetric open section, the torsion resistance is poor, and the plates are prone to local buckling when pressed, resulting in the loss of stability of the members. In order to popularize the use of cold-formed thin-walled steel members, it is necessary to try to limit the local buckling of such members and combine wood with cold-formed thin-walled steel to form cold-formed thin-walled steel wood composite columns. High-strength steel is used to bear the external load, and wood is used as a surface material to provide sufficient lateral rigidity for the core steel plate. Under the action of axial compression, wood can restrain the local and global instability of steel plate, so that the composite member has a high bearing capacity and seismic performance.
