Collapse Mechanism of Strong Column Weak Beam Buildings of Varying Heights
Mohd Moazzam Ali Irfani1, A Vimala2

1Mohd Moazzam Ali Irfani, M.Tech in sstructural engineering, Anurag Group Of Institutions, An Autonomous Instituion, Venkatpur, Ghatkesar, Medchal Dist-TS, India.
2Dr. A. Vimala, Professor, Department of Civil Engineering, Anurag Group of Institutions, JNTUH, Hyderabad, India.
Manuscript received on September 22, 2019. | Revised Manuscript received on October 20, 2019. | Manuscript published on October 30, 2019. | PP: 4144-4148 | Volume-9 Issue-1, October 2019 | Retrieval Number: A1380109119/2019©BEIESP | DOI: 10.35940/ijeat.A1380.109119
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Abstract: During past earthquakes column plastic hinges are more important than beam hinges which gives rise to global structural damage and high life threatening risk. All the structural components transfers their forces through column and then column shares it with foundation to soil, so u can imagine if column fails whole structure can collapse this is strong beam weak column concept. In this paper collapse mechanism of three buildings 5, 12 and 15 storey heights are investigated for strong column weak beam concept. The structure is designed for zone 5 and medium soil. The aim of this work is to determine the static non-linear performance of three buildings of varying heights, each storey height is 3m and each bay width is 5m, the width of the building in X and Y direction is 20m. The heights of the buildings are 15m, 36m and 45m. The parameters which are obtained from the analysis are base shear, displacement and hinge formations in the structure. The base shear and displacement of the structures increases with an increase in strong column weak beam concepts. The hinge formations in the low-rise building involved beam failures where as the hinge formation in mid-rise buildings involves mixed failure pattern involving beams and columns.
Keywords: Strong column-weak beam, push-over curve, base-shear, displacement.