A Seismic Comparison of OMRF & SMRF Structural System for Regular and Irregular Buildings
Journal Title: International Journal for Research in Applied Science and Engineering Technology (IJRASET) - Year 2017, Vol 5, Issue 2
Abstract
The scope of this study lies within the comparison of Regular and Irregular building systems with different Moment Resisting Frames. In this report, Special Moment Resisting Frame (SMRF) and Ordinary Moment Resisting Frame (OMRF) are considered as structural frames. Regular and irregular building systems are modeled. Comparisons are made for the behaviour of building frames considering different elevation irregularity and response reduction factor under earthquake forces. For this purpose, three buildings are modelled with OMRF and SMRF structural systems. The buildings considered are a bare-frame block structure, a stepped structure and a plaza structure. For the same plan area and same height, a comparison is done for different building systems. The base area is 15m x 15m of a G+8 storey building system. The overall height of the buildings is taken to be 27m, making each storey to be 3m. The building frames are made of 5 equal bays along both the axis. Thirteen different load combinations are considered. The buildings are analysed for all seismic zones. The parameters computed and compared are shear force, bending moment, storey displacement and maximum displacement. In all 24 models are made and analysis is done to bring out the results i.e, the best building system. The results are compared for OMRF and SMRF for all the three buildings in all the siesmic zones i.e. II, III, IV, V. Not only this, the study showed the difference in beam and column forces for all the three types of building system. Analysis was done using STAAD. Pro software and using the codes for analysis IS 1893 (PART 1):2002, IS 456: 2000, IS 875 (PART 1): 1987 and IS 875 (PART 2): 1987.
Authors and Affiliations
Amit Kumar Yadav, Prof. Anubhav Rai
Keywords
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- EP ID EP23129
- DOI http://doi.org/10.22214/ijraset.2017.2040
- Views 291
- Downloads 11
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