Authors: Lokesh JK, Dr. Shaik Kabeer Ahmed , Sagar KJ
Abstract: In this study it investigates the role of resonance as a primary cause for the devastating collapse of buildings during seismic events. The study revealed a crucial alignment between the natural frequency of the structures, the natural frequency of the underlying soil, and the exciting frequency, all of which were close to 1.5 Hz. This phenomenon led to catastrophic effects, especially for multistory buildings. The significance of natural frequency in seismic design becomes evident, regardless of the design method adopted. The present work focuses on understanding the dynamic responses of multi-storey frames under seismic loading using the ETABS finite element package. By utilizing this advanced software, several problems of structural elements with known analytical solutions were analyzed to comprehend the implications of dynamic loading. The geometric modeling and analysis results were compared with static analysis procedures to ensure accuracy and reliability. Through this study, a comprehensive understanding of the effects of resonance on multi-storey buildings during seismic events is achieved. The insights gained from the ETABS finite element analysis will contribute to improved seismic design practices, enhancing the safety and resilience of future constructions in vulnerable regions. This research serves as a valuable resource for engineers and designers seeking to mitigate the destructive impact of resonance and optimize structural performance under dynamic loading conditions.
Keywords: Multistorey frames, Seismic loading, ETABS, Finite element, Natural frequency, Dynamic loading
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