DESIGN METHOD FOR PLASTIC DEFORMATION CAPACITY OF STIFFENED STEEL BEAMS AND THE LENGTH OF STIFFENER

Abstract

The purpose of this paper proposes a design and evaluate method for stiffened beams with stiffener plates at the beam ends with the aim of increasing the plastic deformation capacity. For this purpose, the scope of application of the width-to-thickness ratio indicator W_F was extended and a design formula for the stiffening length was proposed. In addition, cyclic loading tests and FE analyses were conducted to validate the proposed design and evaluate method for stiffened beams.