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Comparative analysis of T-shaped base isolated building under far fault and near fault earthquake
The current study's goal is to conduct a comparative analysis of a T-shaped “base-isolated” building under far-fault (FF) and near-fault (NF) earthquakes. A T-shaped base-isolated (BI) building was modelled using SAP2000 and tested under NF and FF earthquakes by performing non-linear time history analysis. The responses of storey displacement, base shear, inter-storey drift ratio, and torsional irregularity have been discussed in this study. It was found that the base isolation shifted the natural time period of the T-shaped building from 0.6 to 2.56 s. In non-isolated building, the responses were found to be higher under FF earthquake as compared to NF earthquake. While, in base isolated building, the responses were found to be higher under NF earthquake as compared to FF earthquake. Both versions of the T-shaped building were found to be torsionally irregular under NF ground motion. The responses inter-storey drift ratio and base shear were found to be reduced by providing base isolation in the irregular building, however, the reduction in these responses was less in the NF earthquake as compared to the FF earthquake. The T-shaped BI building was found to be more effective against FF earthquake as compared to NF earthquake.
Comparative analysis of T-shaped base isolated building under far fault and near fault earthquake
The current study's goal is to conduct a comparative analysis of a T-shaped “base-isolated” building under far-fault (FF) and near-fault (NF) earthquakes. A T-shaped base-isolated (BI) building was modelled using SAP2000 and tested under NF and FF earthquakes by performing non-linear time history analysis. The responses of storey displacement, base shear, inter-storey drift ratio, and torsional irregularity have been discussed in this study. It was found that the base isolation shifted the natural time period of the T-shaped building from 0.6 to 2.56 s. In non-isolated building, the responses were found to be higher under FF earthquake as compared to NF earthquake. While, in base isolated building, the responses were found to be higher under NF earthquake as compared to FF earthquake. Both versions of the T-shaped building were found to be torsionally irregular under NF ground motion. The responses inter-storey drift ratio and base shear were found to be reduced by providing base isolation in the irregular building, however, the reduction in these responses was less in the NF earthquake as compared to the FF earthquake. The T-shaped BI building was found to be more effective against FF earthquake as compared to NF earthquake.
Comparative analysis of T-shaped base isolated building under far fault and near fault earthquake
Asian J Civ Eng
Gudainiyan, Jitendra (author) / Gupta, Praveen Kumar (author)
Asian Journal of Civil Engineering ; 25 ; 2333-2343
2024-02-01
11 pages
Article (Journal)
Electronic Resource
English
Comparative analysis of T-shaped base isolated building under far fault and near fault earthquake
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