Time Period and damping of reinforced concrete frames with effective short to medium height

Azmshkhsat using a dynamic structural analysis method based on benchmark shift less time than the direct analysis requires long history. Linear methods, knowing the time and frequency for effective damping ratio of ductile and catering desired nonlinear response of a building structure can provide it. So hardly effective and percentage calculation fissuring in a reinforced concrete structure, according to the amount of time to identify effective rotation is possible. In this article analyzing a large number of reinforced concrete frame, frequency and time changes based on ductile structural damping ratio shift Saz·hyy system is presented. Frames selected from 1 to 6 floors, with the length and number Dhanhhay vary. Considering the Results of the analysis frames specified amount of time that the vibration frequency and damping structures with increasing ductile structures will increase. But the increase in the amount Paramtrhaydynamyky have the same trend has not been fixed. Also in Frames Height and number of classes increased during the same span of three to six meters in addition to reducing the time frame of initial rotation, rotation time frame effective and efficient damping ratio is reduced.