The effects of configuration irregularity on the determination of performance objectives in R/C structures

Recently, simplified nonlinear methods have been implemented in codes for seismic resistant design of new buildings and evaluation of existing buildings. For regular structures, these methods are considered to be efficient, but, in construction practice, most of the structures are built as irregular, asymmetric structures. Therefore, simplified nonlinear methods must be extended to irregular structures. The goal of the study is to investigate the efficiency of the simplified nonlinear methods using the generic 3 dimensional reinforced concrete structures: a 5 storey, 2 bay symmetric and asymmetric buildings. In this study, firstly, both structures are designed according to TEC 2007. Secondly, their pushover curves are obtained using several techniques such as, static pushover, adaptive pushover etc? Then, these curves are compared with the results of nonlinear Incremental Dynamic Analysis (IDA). The results are presented in terms of top displacement versus base shear of generic frame structures.