SEISMIC POUNDING OF MULTISTOREYED BUILDINGS

Abstract

The investigations made by past and present earthquake seismologist have shown that during earthquake, the building structures are vulnerable to severe damages. The adjacent buildings collide and collapse during moderate to strong ground vibrations caused by earthquakes. Actually, the separation distance of many buildings is n adequate to accommodate their relative motions, so building vibrate out of phase and collapse. Among the possible structural damages the seismic induced pounding has been commonly observed phenomenon. In this paper, a systematic study regarding pounding of building response as well as seismic hazard mitigation practices like effect of different separation distances and effect of addition of shear walls are investigated in ETABS nonlinear software. The results were obtained in the form of pounding force and point displacements. As the pounding effect varies inversely with separation distance so by increasing separation distance pounding effect is reduced greatly and hence damage to neighboring buildings is minimized. Also, the provision of shear wall reduces effect of pounding.