PUSHOVER ANALYSIS OF ASYMMETRIC ORDINARY MOMENT R.C FRAMES DESIGNED ACCORDING TO THE IRANIAN CODES

In this paper, the nonlinear seismic behavior of three ordinary moment-resisting concrete space frames with unsymmetrical plan in three, four and five stories are evaluated using pushover analysis. The three buildings were originally designed according to existing Iranian codes. Seismic loads are calculated and distributed over the height of the frame using both rectangular and triangular forms. It has been found that the obtained capacity curves have been affected greatly by the forms of loading. Results have been also produced in form of story drifts to establish the performance level of these buildings. The results show that all of the frames in both directions are within the life safety performance level.

کلیدواژه ها:

pushover ، concrete frame ، Seismic assessment ، irregularity ، design codes