Numerical and analytical methods for the design of beam-column sub-assemblies with composite deck slab

Abstract A finite element numerical model is used to estimate the force displacement backbone curve of steel moment frame beam-column-joint subassemblies tested at large scale under repeated cyclic loading with different composite deck slab configurations. The configurations included: no-slab; fully isolated slab; two for detailing near region between column flanges; and a full depth reinforced slab. Then, simple analytical was developed so that designers can likely peak strength due effect. This considers common deformation modes hierarchy. It found captured envelope experimental tests done on bare frame, configurations, but overestimated larger displacements other difficulty in considering failure. considered nonlinear beam plastic hinging, concrete crushing both outside flange within flanges, shear fracture tips, longitudinal lateral reinforcement yielding as it carried subassembly moments transferred forces slab, stud deformation. proposed matched strengths failure modes. suitable research, results, consideration design.