International Journal of Civil & Structural Engineering
Author(s) : SARA VAHID
This paper present Isolated PT Beams (IPB) which developed and designed to improve the lateral response of structure under ultimate loading comparing to steel plate shear walls response. IPB frame is a damage free structure that takes advantage of Elastomeric Isolated Bearings and post tensioned strands. Bearings are added at the connection of beam and column in order to minimize the damage to the lateral system and dissipate the energy. Post tensioned (PT) strands help the frame to be self-centered after subjecting to lateral force or during unloading. Proposed system would avoid the damage to connections as well as beams and columns, instead damage would be localized in replaceable members (Bearings and PT). IPB overcomes some drawbacks of shear walls such as yielding of the shear plate under seismic force and improve the response of structure under seismic force. In order to study the behavior of a proposed system, Opensees model was created and cyclic push over analyses were performed. To have a better understanding of the system damage reduction, local and global response of the system were discussed and the result were compared to an existing steel plate shear wall.