GLOBAL PERFORMANCE RESEARCH ON STEEL FRAMES WITH MULTI-RIBBED COMPOSITE SLABS

A new type of embedded and suspended composite slab with multi ribs wall was proposed, which can not only avoid the exposed corrosion of a steel frame, but also play the role of thermal insulation. There is an obvious difference in stress and deformation performance between the steel frame and multi-ribbed composite wall, and the difference between the stress and deformation mode of the steel frame and multi-ribbed composite wall under loads needs to be analyzed through the cooperative force analysis of the steel frame and multi-ribbed composite wall. Therefore, the finite element model of the cooperative system of the steel frame-multi-ribbed composite wall is established, and the overall mechanical performance of the structure under different aspect ratios, different opening forms and different number of lattices is analyzed. Through the analysis of hysteretic curve, skeleton curve, dissipated energy and equivalent viscous damping coefficient, the influence of wall on the overall structural performance is studied.