The Effect of the Horizontal Stiffening Rib on the Overall Stability of the Simply Supported Steel Beam

In this paper, the Finite Element Method is applied to analyse the effect of horizontal stiffening rib on stabih'ty of steel beam under the uniformly distributed loads. Considering different shapes of horizontal stiffening ribs, the paper gets the beam's stable carrying capacity. By comparing the results with those without horizontal stiffening ribs, the enhancing coefficient 77 is presented in this article to measure the horizontal stiffening rib's contribution to the overall stabih'ty of the beam,and the corresponding estimate formula of stable capacity with the horizontal rid is given.