It is of substantial importance to minimize the roof displacement between two adjacent tall buildings under severe earthquakes. To eliminate the pounding effects, critical accelerations can be used to control of the structures. One of the methods to decrease the roof displacement is using active control systems. In this paper, a steel building strengthened by a belt truss system is considered. Two different constraint conditions are used, and critical accelerations which maximize the roof displacement of the structure are obtained for each. These critical accelerations are computed by solving an inverse dynamic problem, using nonlinear programming technique, based on the available information from the recorded ground motion obtained from the site of the structure or at region with similar properties to the site of building. Finally, different number of actuators are attached to the roof and other stories of the building. It shows that the active control system can reduce the roof displacement when the building subjects to the critical excitations effectively. In addition, it can be found that these critical excitations can be used to retrofit or construct the buildings which is equipped by active control system
کلید واژگان :Linear dynamic response analysis; critical excitation; near field acceleration; active control
ارزش ریالی : 600000 ریال
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