ESTIMATION OF STRENGTH OF SEISMIC RETROFITTING BRACE JOINT USING SHEAR-KEY PLATE ADHERED TO CONCRETE SLAB FOR STEEL STRUCTURE

Abstract

Incorporating additional braces is representative method for seismic retrofit for steel structure. In the case of installing the braces, the welding of steel and chipping of floor concrete cause noise and vibration. In order to solve this problem, the previous paper proposed a new method using a shear-key plate adheared to concrete slab with epoxy resin. The failure of this method is brittle, but on the assumption that a buckling restrained brace with low yield steel of its core is applied, this joint is useful for a practical structure. This paper reports the strength of the adheared portion.