Seismic performance of moment-resisting concrete frames subjected to earthquake excitation

In this study,moment-resisting concrete frames (mrcfs) were designed based on eurocodes 2 and 8,which indicate the seismic provisions and requirements for building design and construction. this study aims to investigate the damage measure of mrcfs subjected to earthquake excitation by pushover analysis (poa) and incremental dynamic analysis (ida). in poa,inverted triangular lateral load and uniform lateral load patterns were used to produce a base shear– drift curve. in ida,seven far-field and seven near-field ground motion records were selected to establish the base shear–drift relationship. structural response and damage measures were examined by the performance-based seismic design limit states. vision 2000 proposed four performance states,namely,fully operational,operational,life safety (ls),and near collapse. the results showed that the designed structures have low stiffness because all mrcfs failed to meet the ls limit state. the base shear–drift relationship produced a higher demand in ida than in poa. in poa,the lateral uniform load pattern produced higher demand than the lateral inverted triangular load pattern. in ida,the farfield effect produced higher demand than the near-field effect. poa approximated ida accurately at the elastic stage,but the approximation failed after the yield point. © school of engineering,taylor’s university.