Investigation on shear capacity for screw connections of cold-formed steel framed shear walls with steel sheathing

摘要

Experimental and numerical investigations were carried out to learn the shear capacities for screw connections of cold-formed steel framed shear walls with steel sheets for the base layer combined with gypsum wallboards for the face layer. The design methods of test specimens, the loading equipment and the data processing method were introduced. According the phenomenon of tests for multiple self-drilled screw connections, the loading-deformation curves, shear capacity and failure modes were testified. The influence of end distance of screw, edge distance of screw, diameter of screw, spacing of screw, thickness of steel sheets, thickness of gypsum wallboards, thickness of studs on shear behavior for connections were investigated. The finite element software ABAQUS was used to simulate the shear behavior of screw connections. A comparison between the numerical simulations and the test results showed a good agreement. This study can be applied to numerical simulations of seismic behavior of steel sheathed cold-formed steel framed shear walls.