Recently, the extension of the application of nonlinear analysis methods to structures has led to the creation of different assessment methods based on functional levels. A new idea, introduced as an incremental dynamic analysis method (IDA), was introduced to estimate the seismic performance of structures as well as The probability curve method is dependent on the Damage Measure (DM)and Intensity Measure(IM). This method involves the effect of one or more earthquake records on the structure, each of which is scaled up to a specific intensity. adding a truss belt to the structure of the perimeter curvature causes more fit. This structural form has an effect on reducing the structural response to lateral loads. In this research, the behavior of such frames in a 20-story Steel bulding with two different arrangemency resistant skeleton of rigid belt under 7 record scaled far and near field records has been studied. It is shown in the results of the curves (IDA); the average curves are aligned to a certain intensity level, in fact, the elastic limit indicates the linear behavior of the structure, and in the long run, with the increase in the intensity of the earthquake, in the leap classes in some The IDA's only curves indicate the creation of a plastic joint, and also the slope of the DM variation is lower than the initial variation, indicating the transformation of the hard structure to the stiffening of the structure.