SEISMIC PERFORMANCE OF RE-ENTRANT CORNER BUILDING UNDER THE DIFFERENT EARTHQUAKE DIRECTION
Abstract
In the modern area, Irregularities in building is common phenomenon. But because of increase in irregularity the structure becomes more vulnerable against the earthquake. In this study a re-entrant corner type of plan irregularity is considered. For the sake of study two G +7 R.C. frame buildings that is one regular and one plan irregular is taken satisfying the criteria given in IS 1893 (2016). Linear dynamic analysis done using Response Spectrum Analysis (RSA) and Nonlinear Dynamic Analysis done using Time history analysis (THA). For Nonlinear dynamic analysis, seven different time histories were considered and is applied in twelve different direction at an interval of 300. Linear dynamic analysis does not shows the much effect of direction of earthquake in terms of relative displacements. But in case of nonlinear dynamic analysis, the incident angle that produces increase up to 50 % in terms on relative displacements. From the analysis result it is concluded that one should go for the nonlinear dynamic analysis for the safer design.
References
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