Evaluating The Structural Performance of Soft Storey’s Through the Use of Haunches

Abstract :-The research paper examines the seismic behavior of buildings with soft storeys, which are high-rise structures where the ground floor is open, often for parking. These soft storey create significant changes in the building’s lateral stiffness and strength, impacting the building’s performance during earthquakes. The study focuses on understanding how soft storeys affect seismic parameters such as storey drift, displacement, base shear, and storey overturning moments. The research evaluates buildings with soft storeys at different levels, using the Equivalent Static Method and seismic analysis through ETABS. It finds that shifting the soft storey to higher floors reduces displacement, and different structural systems can help reduce lateral displacement and story drift. The paper aims to assess the effects of soft storeys in various earthquake zones and with different column shapes. Keywords: Soft Storey, ETABS, Storey Drift, Equivalent Static Method, Response Reduction Factor.