Time History Analysis of Unsymmetrical Multistorey Building and Comparative Study of Displacement

Ariga Veerendra Reddy
Department of Structural engineering, PG Student, Vignan deemed to be University , IN

Sana Sultana
Department of Structural engineering, PG Student, Vignan deemed to be University , IN

Divi Jahnavi
Department of Structural engineering, PG Student, Vignan deemed to be University , IN

Kunda Aruna Reddy
Department of Structural engineering, PG Student, Vignan deemed to be University , IN

Sk mohammad Abid
Department of Structural engineering, PG Student, Vignan deemed to be University , IN

Keywords: Capacity Curve, Dynamic Analysis, Pushover Analysis, Static Analysis, Time History Analysis.

Abstract

As occurrence of earthquake is unpredictable, we need to adopt certain preventive measures to overcome the failures during an earthquake. The uncertainty in failure of structures during an earthquake has made it a necessity to consider the seismic forces while analyzing and designing a structure. Under earthquake the structure is subjected to static and dynamic action. The static and dynamic analysis can be performed with in the elastic range and inelastic range. This paper gives an overview about the pushover and linear dynamic analysis. A G+5 reinforced concrete University building which is asymmetric and the vertical geometrical and diaphragm discontinuity irregularities are considered for the analysis. The seismic analysis of a building is done by using pushover analysis
and Time history analysis in ETABS software. The linear time history is done by taking the time. For time history analysis time history record of 2001 BHUJ Earth Quake, Gujarath are used. The displacement, drift and base shear results are compared and pushover curve, capacity curve and performance point is found for the building. From the obtained results for building with irregularities time history analysis gives the realistic and better results compared to the pushover analysis.

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