Author(s) :
Govind A
Conference Name :
The International Conference on scientific innovations in Science, Technology, and Management (NGCESl-2023)
Abstract :
A soft storey is one that has a discontinuity in the stiffness of the building where one storey is significantly more flexible than the other storey. In order to tackle the problem of parking space, open ground storey is more preferred. The soft storey effect is the main criteria to be considered while constructing a building with open ground storey configuration. These buildings possess a higher tendency for collapse during earthquake due to soft storey effect. The discontinuity in stiffness will result in large bending moment and shear force action in open ground storey building. The study aims to find out the effects of soft storey configuration in the building with different types of steel bracings under seismic loads. The types of steel bracing include concentric bracing, eccentric bracing and cross bracing. The effect of bracings systems used in soft storey building under seismic load are studied using ETABS software. The different parameters like lateral displacement, bending moment, storey drift, storey shear, storey stiffness needs to be analysed and compared. Response spectrum analysis and nonlinear dynamic time history analysis is carried out to understand the behaviour of building under earthquake loads. From the results it was concluded that, the inclusion of cross steel bracing proved to be the most effective structural configuration closely followed by the concentric inverted V steel bracing configuration in order to mitigate the soft storey effect in all zones. The stability of a building can be improved by using these lateral load resisting systems.
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