Elastic local buckling strength of i-shaped beam web plates subjected to end moments and uniformly distributed load

Design equations for the elastic critical local buckling are considered simplified conditions, such as uniformly compression with simply supported edges or idealized boundary conditions; however, I–beams are also subjected to uniformly distributed loads such as seismic and live loads in reality. This study aims to clarify the effect under bending moments and uniformly distributed loads, on the local buckling strength of web plate of I–beams. It was concluded that uniformly distributed load tends to cause shear–type local buckling. Moreover, a discriminant equation for local buckling mode and a design equation considering the combined loads was presented.