Can SAP2000 perform a seismic analysis using single mode, uniform load or time history method?
I am assuming that you are referring to AASHTO ASD 2002 (17th Edition), Division IA – Seismic Design, Section 4 (Analysis Requirements). Based on the complexity and regularity of the bridge, this section requires to use one of the following analysis methods: • Procedure 1: Uniform load method • Procedure 2: Single-Mode Spectral Method • Procedure 3: Multimode Spectral Method • Procedure 4: Time History Method SAP2000 enables to perform analysis using any of the procedures listed above. Procedures 1 and 2 are essentially equivalent static methods and SAP2000 can be used to determine the response under the equivalent static loading. You can also define load cases of “Response Spectrum” and “Time History” types which would enable you to evaluate the response using procedures 3 or 4, respectively.
