Abstract
Ultimate states of cylindrical reticular structures subjected to earthquakes are evaluated based on energy balances. The collapse mechanism of the structures can be grouped into two sorts: the roof brace failure type and gable vertical brace failure type. Then using the collapse mechanism and the maximum drift obtained by the static nonlinear analysis, the safety criterion is proposed based on the concept that all the input plastic energy is dissipated by inelastic deformation in brace members.
