The 2017 Tripura earthquake caused wide spread structural and nonstructural damage to some buildings in the North-Eastern part of Bangladesh. To investigate the dynamic behavior of a building, seismic response simulation was carried out. For time history analysis, synthetic ground motions were used since no ground motion was available for the Tripura earthquake. When actual damage was compared with the analytical result from the nonlinear time history analysis, reasonable correlation was obtained. It was found that low strength concrete, bare frames in the ground floor, insufficient shear reinforcement, inadequate column sizes and weak beam-column joints were mainly responsible for the damage due to this earthquake. Both strength oriented and ductility oriented retrofitting approach were considered for rehabilitation. From the nonlinear analysis, it can be concluded that strength oriented retrofitting is the best option for strengthening for local design and construction conditions in Bangladesh.
Keywords: Tripura earthquake, Seismic evaluation, Seismic rehabilitation, Non-linear analysis.