Seismic Performance of Buckling-restrained Braced Structural System of Air-cooled Condenser

Through time history analysis under single-component earthquake excitations,the deficiencies of the seismic performance of the exiting structural system of air-cooled condenser were pointed out.Comparisons between the structural system with and without buckling-restrained braced(BRB) supporting systems were carried out.The mechanical behaviors of BRB structural system of air-cooled condenser under two-component earthquake excitations were preliminarily studied,and a connecting procedure of the super-long BRB was proposed.The results show that the influences of overall torsion deformation under earthquake excitations are prohibited efficiently by adding BRB to the existing structural system of air-cooled condenser,and the torsion deformation has an increase trend after yielding of the BRB in two-component arrangement of the structural system.