In this paper, we proposed new "Energy balance method" characterized by the following two points.
1) Calculate plastic deformation capacity of story using the fatigue curve of beam-end connections
2) Consider ground motion characteristics, for instance, long-duration ground motion with large energy spectrum
We compared this method with time history response analysis result in terms of damage degree of beam-end connections. Furthermore, we verified seismic safety for medium and high-rise steel buildings and confirmed effects of specification of beam-end connections, installation of damping device and characteristics of ground motion by method.
