In past earthquakes, most of the asymmetric buildings were more vulnerable than symmetrical buildings, and according to that, seismic design rules were laid down for asymmetric buildings. Studies carried out after the Mexican earthquake of 1958 showed that almost 50% of the damage was directly and indirectly due to the structural asymmetry in terms of strength, hardness and mass. In an earthquake that occurred in 2003 in the city of Bam It was one of the factors that caused or exacerbated failures, the effects of asymmetry or twist. For this reason, in this study, the design efficiency was evaluated based on nonlinear analysis methods for asymmetric buildings in the plan of 7.4 and 15 floors with concrete reinforced concrete shear exits from 0%, 10% and 20%.
The results of the analysis showed that the shear structure with nonlinear design has a higher degree of ductility than that of a linear design. Also, the ability to dump power dissipation in structures with a cutting wall with a nonlinear design more than a linear design is . Due to the importance of shifting the soft and hard edges in asymmetric structures, this problem has been investigated and after the analysis, it was observed that two-edges of soft and hard-edged structures are equipped with a shear wall with a nonlinear design less than the shear wall With linear design.