Godhat Kishan J., Yashwantsinh Zala
This paper deals with a state of art review on site-specific ground response analysis of tall building with viscous dampers. Earthquakes are natural hazards under which disasters are mainly caused by damage or collapse of buildings and other man-made structures. During an earthquake, seismic waves radiate away from the source and reach the ground on which these seismic waves produce shaking. The surface ground shaking causes severe damage to the structures, which depends on characteristic of subsurface soil. Therefore for a realistic design of earthquake resistant structures site-specific detailed investigation is necessary. Site specific response spectra are developed using ProSHAKE software.The site specific response spectra are used to evaluate response of tall building frame structures with viscous dampers using ETABS software. Using viscous dampers to dissipate energy and reduce building response to dynamic inputs is gaining worldwide acceptance. The use of supplemental damping to control structural deformations and forces due to seismic ground motions has been demonstrated in overseas applications to be a very effective means of improving building performance. The combination of structural frames with energy dissipation provided by Viscous Dampers (VD) is a surprisingly cost efficient means to achieving Low Damage Design (LDD) that is effective at both serviceability and ultimate limit states. This paper presents an application of viscous dampers in a tall structure to suppress the anticipated earthquake induced accelerations. The viscous damper system proves to be a very cost-effective method to reduce earthquake and wind motions.
Site Specific Response, Viscous Dampers, Proshake, Low Damage Design