Is there any way to know the curvature of the frame member from the analysis results? I need to know that in order to check whether the corresponding capacity is exceeded.
Do you mean M-phi of a section or M-phi of a structure? If you mean M-phi for a section I think it is available in RC design section of SAP2000 along with interaction diagrams. But M-phi of a structure is not what I usually do, and if it is anywhere in Sap2000, then it will be in results from step analyses like time histories or static pushover.