Experiments and Numerical Simulations on the Seismic Performance of Steel-Frame Composite Wallboard Shear Walls

In order to expand the applications of cold-formed thin-walled steel structures, this study proposes a new type composite wallboard composed C-shaped and multi-layer concrete, in which serves as skeleton, foam concrete acts thermal insulation material, fine aggregate cement mortar play part envelopes. The can be made factory assembly line, meeting requirements building (civil structural) industry. Two steel-frame shear walls were subjected reciprocating loading, with connection mode design parameter, investigate seismic performance structure. failure mode, hysteresis curve, skeleton strength degradation, stiffness ductility, energy dissipation capacity specimens analyzed. On basis, finite element (FE) model was established, model’s accuracy verified by comparing bearing curve. Results show that structure shows characteristics, layer are separated from after being crushed. infilled is also crushed, welding seams between extended frame WP-1 specimen damaged. curves two have clear pinch, but area enclosed loop large, present. yield load ultimate WP-2 higher than those specimen, indicating frame, greater carrying specimen. established FE accurately estimate walls.