ABSTRACT
In the dynamic collapse analysis of CFT frame, multistory plane frame is assumed to be composed of the rigid panel zones of beam-column connection and the axially elastic members with elastic-plastic hinges at both ends as explained in Figure 1 (Saisho & Goto 2004). This assumption related to the rigid panel zone can be satisfied in most real CFT frames because the steel beam to CFT column moment connection has large shear strength.Themass of frame is concentrated in every panel zone and distributed uniformly in it.The displacement of frame can be expressed only by the rotation (θi, i: number of panel zone), the horizontal displacement (ui) and the vertical displacement (wi) of every rigid panel zone.
