EVALUATION OF PLASTIC DEFORMATION CAPACITY OF H-SHAPED STEEL BEAMS WITH THE NEWLY PROPOSED LIMITATION VALUE OF PLATE SLENDERNESS

Abstract

Authors have proposed WF, the new limitation value of plate slenderness ratio, which takes stress distribution within H-shaped beams and coupled instability of the web and flanges into consideration. The purpose of this study is to generalize WF to various types of structural steel. In this paper, authors clarify interactions between plastic deformation capacity and mechanical properties of H-shaped beams, explain the adaptation validity of WF, and establish sets of WF for each type of steel. As a result, authors found that WF successfully evaluated plastic deformation capacity of H-shaped beams generally and uniformly, regardless of types of steel.