PANEL ZONE DESIGN FOR REDUCED BEAM SECTION MOMENT FRAMES
CONSIDERING WEB SLENDERNESS RATIO OF BEAM
Amr A. Soliman1, Omar A. Ibrahim1
1 Department of Structural Engineering, Alexandria University, Alexandria, Egypt
It was found that for reduced beam section (RBS) beam to column connections the panel zone design depends on the beam flexural strength and plastic rotation capacity, which are affected by the beam web slenderness ratio. The objective of this paper is to investigate the effect of web slenderness ratio of the beam on the behaviour of SMRF utilizing RBS connections and to determine the most effective panel zone strength ratio according to the web slenderness ratio. This objective is addressed through the analysis of three-dimensional nonlinear finite element models (FEMs) representing the beam to column assemblies. A parametric study is established to evaluate the effect of these parameters on the energy dissipation. It was found that for the case of relatively large web slenderness ratio of beams, the required panel zone design ratio to achieve maximum energy dissipation, coincides with that specified by specifications. On the other hand, beams with relatively low slenderness ratio requires a higher panel zone design ratio to achieve maximum energy dissipation. Furthermore, panel zone design ratios have been proposed corresponding to the connected beam web slenderness ratio.
Panel Zone; RBS; Beam to Column Connections; Web Slenderness Ratio