EXPERIMENTAL STUDY ON BUCKLING RESTRAINED BRACES USING STEEL MORTAR PLANKS WITH INITIAL IMPERFECTIONS

This paper describes static cyclic loading tests of buckling restrained braces using steel mortar planks with initial imperfections. Experimental parameters are initial deflection of core plates due to uneven of mortar face and direction of core plates. Tests are conducted by applying increasing loads alternately in positive and negative directions. As results, the energy absorption capacity of specimens with initial imperfection is lower than that without initial imperfection; however, the absorption capacity is larger than that of required value.