Influence of Rotational Component of Earthquake on Multistoried Buildings Embedded with Seismic Control Devices

The study aims to investigate the analysis of multi-story buildings, incorporating advanced seismic analysis and mitigation strategies. Most of the studies conducted do not give much importance to the rotational earthquake component. However, recent studies have shown that rotational components have a significant impact on the structural response. Thus, to understand the dynamic behavior accurately under seismic excitation, it is necessary to take into account the effects of rotational earthquake components. A negative stiffness device (NSD) is adopted as an advanced seismic control strategy that can apparently change the stiffness of the structure without affecting its strength. The response of the building was analyzed using the ETABS software. The study is focused on understanding the mitigation performance of the NSD’s against strong earthquakes, considering the translational and rotational components of earthquakes through numerical simulations. The significant impact of NSD’s in reducing structural responses like displacement, drift, and base shear is studied. The incorporation of negative stiffness devices thus provides engineers with additional tools for designing structures that can better withstand seismic events. This flexibility allows for more innovative and efficient structural designs.