A STUDY ON APPLICABILITY OF HORIZONTAL STIFFENER FOR BUFFERING WEB WIDTH-THICKNESS RATIO OF HIGH-STRENGTH STEEL H-SHAPED BEAM

Abstract

The current design criteria on width to thickness ratio of high strength steel in Japan is too strict for use in practice. Research of the past revealed that evaluating the deformation capacity of H-shaped beam made of HT780 steel based on the angle at maximum strength of H-shaped beam made of 490 N/mm² grade steel is an effective method to reduce weight of steel. The purpose of this paper is to reveal more efficient design method for H-shaped beam made of HT780 steel by using stiffener at neutral axis of web.