PLASTIC DEFORMATION CAPACITY AND POST-BUCKLING BEHAVIOR OF H-SHAPED BEAM WITH LARGE DEPTH-THICKNESS RATIO UNDER CYCLIC LOADING

Abstract

In the past, it was shown that H-shaped beams with large depth-thickness ratio are useful as a seismic design beam. But, under cyclic loading, the characteristics of these beams have not been examined enough. So in this study, the cyclic behavior, plastic deformation capacity and energy absorption ability of H-shaped beams having larger depth-thickness ratio than the limit of current standard are examined by cyclic experiments and numerical analysis. And the new limit value of plate slenderness are proposed. The plate local post-buckling behaviors of these beams are considered and modeled for progressive use in the future.