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Authors
Affiliations
1 Applied Mechanics Department, Govt. College of Engineering, Karad, 415124 (M.S.), IN
Source
International Journal of Engineering Research, Vol 5, No SP 3 (2016), Pagination: 750-755
Abstract
Pushover analysis is a static, nonlinear procedure using simplified nonlinear technique to estimate seismic structural deformations. It is an incremental static analysis used to determine the force-displacement relationship, or the capacity curve, fora structure or structural element. Many buildings in the present scenario have irregular configuration both in plan and elevation. This in future may subject to devastating earthquake. In order to identify the most vulnerable among the models considered, pushover analysis is carried out. The analysis involves applying horizontal loads, in a prescribed pattern, to the structure incrementally, i.e. pushing the structure and plotting the total applied shear force and associated lateral displacement at each increment, until collapse condition. The intensity of the lateral load is slowly increased and the sequence of cracks, yielding, plastic hinge formation, and failure of various structural components is recorded. In this paper an attempt is made to study the seismic response of RC building with plan irregularities in terms of performance point and the effect of earthquake forces on multi story building frame with the help of pushover analysis. In the present study reinforced concrete framed buildings of irregular plan (according to IS 1893-2002) such as L shapes are analyzed and compared with regular plan(rectangular) with G+5 , G+10 and G+15 storied. The push over analysis of the building frame is carried out by using software SAP 2000.
Keywords
Pushover Analysis, Irregular Building, Performance Point, Capacity Curve.
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