A practical design formulation for perforated beams with openings strengthened with ring type stiffeners subject to Vierendeel actions

In this paper, the effect of ring type stiffeners on Vierendeel mechanism perforated beams with various opening shapes is investigated. causes to fail four plastic hinges that occur in vicinity large and usually isolated web openings. The practical are used study increase mechanical strength beams. effects stiffener thickness height analyzed for different diameter ratios. A beam profile UB457 × 152 52 steel grade S275 employed. Finite element analysis conducted both geometric material non-linearities obtain failure loads cases Shear/moment interaction diagrams also obtained so they can be directly by practicing engineers. Such curves plotted demonstrate mechanism. Yield patterns presented. Moreover, a design formulation derived direct use This has ultimately shown that, stiffener's shear moment performance depending diameter.