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Paper Title : Pushover Analysis of Steel Framed Building using ETABS Software

ISSN : 2395-1303
Year of Publication : 2022
10.5281/zenodo.6567270

Authors: Thiru kanji.D, Mr.N.S.Madhu Assistant Professor, Dr. Suresh Babu.S Ph.D.FIE.,FIGS, HOD

         


Abstract
The earthquake resistant design of structures requires that structures should sustain, safely, any ground motions of an intensity that might occur during their construction or in their normal use. The most accurate analysis procedure for structures subjected to strong ground motions is the time-history analysis. However ground motions are unique in the effects they have on structural responses .In this paper we are going to discuss about the analysis on the Steel Framed Building, i.e., 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 for a structure or structural element. The analysis involves applying of 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 loads at each increment until the structure or collapse condition. In technique a computer model of the building is subjected to a lateral loads of a certain shape (i.e., inverted triangular or uniformly). 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. Pushover analysis can provide a significant insight into the weak links in seismic performance of the structure. The seismic response of Steel Framed Building in terms of performance point and the effect of earthquake forces on multi story building frame with the help of pushover analysis is carried out in this paper. In the present study a building frame is designed as per Indian standard i.e. IS 456:2000 and IS 1893:2002. The main objective of this study is to check the kind of performance a building can give when designed as per Indian Standards. The pushover analysis of the Steel Framed Building is carried out by using structural analysis by software E-tabs at only zone-3 earthquake.

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Keywords
- Pushover Analysis ; Nonlinear Static analysis ; Performance point ; Capacity curve ; Displacement ; Drift of stories ; seismic zones ; Etabs software.