Enhancing Seismic Resilience of Existing Reinforced Concrete Building Using Non-linear Viscous Dampers: A Comparative Study

After the catastrophic destruction of October 2005 Kashmir earthquake, first building code Pakistan was developed in 2007. The sole purpose (BCP) to incorporate advancements earthquake-resistant design fortify structures and ensure safety citizens against future seismic events. 2007, BCP not revised till 2021 include changes over time. However, recently updated version highlights that seismicity many regions is high, which truly reflected Therefore, due growing concerns about potential risks region have been incorporated into BCP. there are among researchers designed on 2007 may need fortification. current study focuses fortification existing systems were using previous codes. Non-linear viscous fluid dampers used improve resilience structures. This compares performance an reinforced concrete with without non-linear subjected a dynamic analysis. evaluated terms story displacement, drift, acceleration, energy dissipation mechanisms. Adding structure caused decrease inter-story drift by around 31.16% roof displacement reduced 36.58%. In addition that, controlled structure, more than 70% dissipated dampers. These results indicate adding significantly improved vibration system undesirous vibrations. outcomes this also provide very detailed insight usage for improving buildings can be develop effective strategies mitigate impact events already built