Proposed Panel Zone Model for Seismic Design of Steel Moment-Resisting Frames

This paper proposes a new mechanics-based model for the seismic design of beam-to-column panel zone joints in steel moment-resisting frames. The is based on realistic shear stress distributions retrieved from continuum finite element (CFE) analyses representative geometries. Comparisons with comprehensive experimental data set suggest that proposed predicts stiffness and strength noteworthy accuracy, even zones featuring columns thick flanges (thicker than 40 mm), as well cases high aspect ratios (larger 1.5). In respect, addresses limitations all other available models literature. If doubler plates are deemed necessary design, CFE simulations do not depict any doubler-to-column web incompatibility, provided current detailing practice respected. Hence, total thickness column should be directly used model. reduction due to axial load effects peak compressive load, including transient component dynamic overturning exterior joints. It found commonly von Mises criterion suffices adequately predict zone.