TIME-HISTORY ANALYSIS OF RC MRF FRAMES RETROFITTED BY CONTROLLED ROCKING WALL SYSTEMS

Using rocking wall systems in reinforced concrete structures is a recent technique to improve their seismic behavior. In this paper three ten and three 10 story reinforced concrete frames (MRF) with intermediate ductility, reinforced concrete frames with shear wall (RCSW), reinforced concrete frames with controlled rocking wall (RCRW) are compared with each other time-history analysis. Simulation and numerical analysis was performed with OpenSees software. The results show that peak roof displacement of RCRW is smaller than RCSW and to some extent MRF. Also plastic hinge formation and inter-story drifts are well distributed in the structure with rocking wall system in comparison with the other systems.

Keywords:

Controlled Rocking wall , Time-history , OpenSees , Post-tensioned Tendons