SEISMIC SAFETY EVALUATION OF STEEL BUILDINGS BY ENERGY BALANCE METHOD CONSIDERING EFFECT OF CYCLIC DEFORMATION OF BEAM-END CONNECTIONS

Abstract

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.