Open AccessSEISMIC ANALYSIS OF MULTISTORIED IRREGULAR AND REGULAR BUILDING WITH MASONARY INFILLS
Author(s) -
Ashutosh Shrivastava,
Rajesh Chaturvedi
Publication year - 2021
Publication title -
international journal of engineering applied science and technology
Language(s) - English
Resource type - Journals
ISSN - 2455-2143
DOI - 10.33564/ijeast.2021.v05i12.019
Subject(s) - infill , structural engineering , diagonal , stiffness , displacement (psychology) , seismic analysis , low rise , static analysis , space frame , engineering , mathematics , geometry , psychology , psychotherapist
Nowadays, as in the urban areas the spaceavailable for the construction of buildings is limited. So inlimited space we have to construct such type of buildingswhich can be used for multiple purposes such as lobbies,car parking etc. To fulfill this demand, high rise buildingsis the only option available. The performance of a high risebuilding during strong earthquake motion depends on thedistribution of stiffness, strength and mass along both thevertical and horizontal directions. If there is discontinuityin stiffness, strength and mass between adjoining storeys ofa building then such a building is known as irregularbuilding. The present study focuses on the seismicperformance of regular and vertical irregular buildingwith and without masonary infills. In the present studyG+11 building is considered for the analysis withmodelling and analysis done on ETABS software v17.0.1.The earthquake forces are calculated as per IS 1893 (part1): 2016 for seismic zone III. The width of strut iscalculated by using equivalent diagonal strut method.Total five models are considered for the analysis i.e.regular building with bare frame, regular building withmasonary infill, soft storey building with open groundstorey, mass irregular building with masonary infill andvertical geometric irregular building with masonary infill.The non-linear static analysis (pushover analysis) andlinear dynamic analysis (response spectrum analysis) areperformed for all the models and thereby compare theirresults. From analysis, the parameters like performancepoint, time period, maximum storey displacement,maximum storey drifts, storey shears and overturningmoments are determined and also comparative study isdone for all the models. From the comparison, it isobserved that the vertical geometric irregular buildingshows better performance under seismic loading and bareframe building shows inferior performance. Moreover,the performance of masonary infilled frame building isf