||The detailed seismic evaluation is used to evaluate the seismic capacity of a
structure. At present, the most commonly used analysis method is the nonlinear
pushover analysis. The nonlinear pushover analysis introduced in ATC-40 is
based on planar frames. To extend the pushover analysis method to space frames,
a necessary modification is needed. In this report, the single modal pushover
analysis and the simple pushover analysis of space frames are discussed. In
addition, the restrictions of single modal pushover analysis are specified and the
mistakes of ETABS in the transformation of ADRS format are also pointed out.
For the pushover analysis of the space frame, the simple pushover analysis
based on planar frames is suggested to establish the capacity curve and spectrum
of structures. The simple pushover analysis can be used to evaluate the seismic
capacity of structures reasonably.