Seismic Analysis of R.C Building for Different Models with Different Bracing System & Shear Wall for Soft Storey

Reinforced concrete (RC) frame buildings are becoming increasingly common in urban areas of India.Many such buildings constructed in recent times have a special feature-the ground storey is left open for the purpose of parking .i.e.columns in the ground storey do not have any partition walls (of either masonry or RC) between them.With increase in height of buildings need for parking space for people living in the building increases.An open ground storey building, having only columns in the ground storey and both partition walls and columns in the upper storey's, have two distinct characteristics namely: a) It is relatively flexible in the ground storey, .i.e. the relative horizontal displacement it undergoes in the ground storey is much larger than what each of the storey above it does.This flexible ground storey is also called soft storey.b) It is relatively weak in ground storey, i.e. the total horizontal earthquake force it can carry in the ground storey is significantly smaller than what each of the storeys above it can carry.Thus, the open ground storey may also be a weak storey.Often, open ground storey buildings are called soft storey buildings, even though their ground storey may be soft and weak.Generally, the soft or weak storey usually exists at the ground storey level, but it could be at any other storey level too.Open ground storey buildings have consistently shown poor performance during past earthquakes across the world for example Bhuj earthquake occurred in 2001; a significant number of them have collapsed.This study focuses on the seismic analysis of a reinforced concrete (R.C) building subjected to earthquake forces, considering various structural models with distinct bracing systems and shear wall configurations in the soft storey.The objective is to assess the effectiveness of different lateral load resisting elements in enhancing the seismic resilient of buildings, particularly in regions prone to seismic activities.The analysis involves the use of sophisticated numerical methods and software tools to simulate seismic forces and predict the structural response.Key performance indicators like storey stiffness, base shear, inter-story drift, and displacement, are evaluated for each model to compare their seismic resilience.