The fire resistance of steel plate girders with slender webs – A comparative study

A comparative study of the load-bearing capacity of selected steel plate girders with slender webs under fire action is presented in this paper. Typical plate girders and girders with corrugated webs are considered. Stiffeners are only placed at the ends of cantilever beams so the shear buckling is a possibility. Fire resistance of the analysed members was estimated using two separate FEM software packages. Moreover, the computational approach applied for each case was different, thus validation of the software was possible. Failure modes, critical temperatures and deformations for steel plate girders subject to fire temperatures are also presented.