Structural Influencing Coefficient of Concentrically X-braced Steel Frame

The design earthquake action of various structural systems is affected by structural influencing coefficient which is related with structural ductility and overstrength.Based on Code for Seismic Design of Building(GB50011),the paper designs three concentrically X-braced steel frames and their structural coefficients are obtained by Push-over analysis.The result indicates that the above code sets high scale for horizontal earthquake action of concentrically X-braced steel frame.