ABSTRACT
The past reconnaissance surveys on various earthquake failures show enormous loss of lives and property. A seismic deficient structure lacks the ability to dissipate input energy during the ground motion and fails to offer ductile sway mechanism. Restoration of severely damaged structures may lead to exorbitant cost and some of the damages such as soft storey failure; joint shear failures etc. are not restorable due to the high intensity of damage. In the proposed study an idea of passive damping mechanism has been put forth by developing a new type of affordable friction damping device using Styrene Butadiene Rubber in the form of waste radial rubber tire. Proposed friction damper has been developed to improve the local performance of beam-column joint and tested under cyclic loading. Important parameters such as hysteresis behaviour, energy dissipation, friction coefficient of damper has been evaluated. The response of the beam-column joint specimen installed with damper shows very convincing results in terms of shear resistance and energy dissipation. The rubber-steel friction interface shows increased lateral load resistance and damping behaviour as compared to conventional specimen. Developed friction damper is very robust in nature and can be installed in new as well as old framed structures to improve the seismic resistance.
