Comparative Study of Structural Framing System : Omre , Imre And Smrf In Regular Shape RCC Building

Abstract

All structural systems are not treated equally when the response to earthquake-induced forces is of concern. Structural configuration, symmetry, mass distribution, and vertical regularity must be considered. The importance of strength, stiffness, and ductility in relation to acceptable response must also be appreciated. While considering the lateral force resisting systems, we came up with many options to have structural systems like Bearing wall systems, Moment Resisting frames, and Lateral Bracing systems, designing the moment resisting concrete frame structures we have the option to use IMRF, OMRF, or SMRF. The basic step in conceptual design is to find the best suitable framing system and then lateral load-resisting mechanism, while designing structures it is often found to be complicated to make decision of Response Modification Factor (R), which is a measure of ductility and over-strength of the structures. It is used to find the base shear, which is distributed on different stories. SMRF and IMRF are emphasized in the research and a detailed computer simulation of the different RCC structures in Zone-II with different R-values i.e., 5 and 8 given in BNBC-2020 are used. In this study, there are a total of 3 models of different frame systems are developed and several comparisons are made among them, such as drift, displacement, sway, column and beam Size comparison, longitudinal reinforcement requirement comparison, column cost analysis, and base shear comparison. Conclusions are drawn from the study after all the comparison analysis it is found that the SMRF frame system is a better and more effective framing system than the other two framing systems such as IMRF and OMRF.