COMPARATIVE ANALYSIS OF METHODS FOR NONLINEAR SEISMIC ANALYSIS OF REINFORCED CONCRETE FRAMES

In this paper the results of comparative analysis of methods for the nonlinear seismic analysis of reinforced concrete frames are presented. Two different methods of nonlinear response analysis are considered: one is the nonlinear response analysis based on the use of Ramberg-Osgoods relations for calculation of stiffness prior to dynamic analysis; the second is the nonlinear analysis with successive changes of stiffness depending on joint rotation values