As the aim of nonlinear seismic analysis is to recognize real behevior of structures against future earthquakes.Hence in order to the possibility of replacement of dynamic methods by simple and adaptive pushover analysis methods,in this research ,the Adaptive Pushover Analysis Method (APAM) with two option displacement force types (DAP&FAP) is considered for three types of concrete intermediate flexural frame buildings due to iranan seismic code 2800 (short 5stories,intermediate 10stories,high 15 stories).In this method,the results of upper modes effects on seismic behavior structures are evaluated and compared to Time History Analysis Method (THAM) results as a dynamic method.To established common and adaptive pushover analysis methods , SAP2000 and Seismostruct softwares are employed respectively.In the consequence base shear force,roof displacement and drift parameters:DAP method for 5 and 15 stories ,common pushover method for 10 stories have the closest results to THAM.