Evaluation of Nonlinear Seismic Response of Reinforced Concrete Structures

Abstract

The seismic response of a building structure is generally evaluated using simplified methods based on elastic response spectra which pass by a linear elastic analysis still takes no account of the true behavior of the structure which may be the both linear and non-linear. To consider the problem of non-linearity, non-linear methods have emerged as static methods (Pushover) and nonlinear temporal dynamics. The purpose of this communication is to use these two methods to evaluate the seismic response of two types of structures: (1) mixed (web + frame) and (2) freestanding gantry, both located in a zone of high seismicity. The dynamic analysis is conducted from two known accelerograms: El Centro 1940 Kobe 1995. The results show that the mixed structure has a better performance vis-à-vis the seismic actions.