INFLUENCE OF BEAM WEB WIDTH-THICKNESS RATIO ON DEFORMATION CAPACITY OF STEEL BEAMS WITH BUCKLING STIFFENING OF BEAM END SUBJECTED MANY CYCLIC LOADINGS

Abstract

In the Tohoku Pacific Coast Earthquake (2011), long-period earthquakes are attracting social attention in the point of disaster prevention. In the Hyogo-ken Nanbu Earthquake (1995), ruptures in the beam end welds near weld access holes were reported.

Regarding this damage, countermeasures have been taken to prevent early fracturing, but existing buildings have same detail. It is important to evaluate deformation capacity of these steel beams.

In this paper, test and FE analysis were carried out to investigate the effect of thin beam webs on the deformation capacity of H-shaped beam with weld access hole subjected many cyclic loadings.