International Journal of Sustainable Building Technology and Urban Development ISSN:2093-761X(Print) 2093-7628(Online)

The aim of the present work is to study the effect of vibration control techniques on scaled down metal iron frame models with inverted V-Chevron bracings of varying heights such as 4, 6 and 8 storeys. The models were subjected to five different high magnitude earthquakes excitations. A check in earthquake force transfer and lateral load resistance was achieved using two techniques namely, base isolation with the help of laminated steel rubber bearing and the incorporation of a core structural system. The focus was on comparing the top floor responses between the base isolated and non-isolated buildings model using a uniaxial shake table. Further, the effects of the introducing a rigid core structural system in the non-isolated structure were studied using model analysis. To check the influence of material on structural response, a comparison of the results of 8 storeys wooden and metal iron frame model was also carried out. The interpretation of the result done using Vib’SYS shake table software showed the effectiveness of the base-isolated structure in reducing the top floor acceleration response in a range of 40-80% for all the metal iron structures. The floor displacements decreased by an average of 55% in metal iron structures, up to 70% in wooden structures, and an average of 48% in the core structure. We can thereby conclude that the introduction of lateral flexibility at the base by means of isolation aids in proper energy dissipation at the base hence reducing the seismic demand of the structure and the core structure also enhanced the overall stiffness of the structure which resulted in response reduction.