A study on mechanical properties of hybrid girders using high-perfomance steels

Abstract

Studied herein is the structural performance of hybrid box girders using high-performance steels under both bending and shear force by FEM analysis. Remarkable performance of hybrid girders observed through the study are as follows:(1) Under pure bending, the bending moment can reach to almost the fully plastic moment depending on the width thickness ratio of web.(2) Under both bending and shear force, the box girder can keep the load level even after the buckling occurs and may be superior depending on the ratio of the area of the flange to the area of the web.