Abstract
Retrofitting of existing buildings with seismic protection devices is an important approach which is commonly adopted by the civil engineering community. This paper investigates the potential of inerter-integrated seismic vibration absorber for building structures. A real case study of a high-rise building in Colombia is considered herein to demonstrate the effectiveness of the proposed device. An inerter generates a force proportional to the relative acceleration between its two terminals and it fundamentally enlarges the range of realisable passive mechanical impedances. In this work, an interter-integrated device is modelled into the open-source structural engineering software OpenSees and implemented into a simplified two-dimensional (2D) version of the Colombian test-bed structure. The performances of the structure retrofitted with the proposed absorber are compared to those of the same structure retrofitted with a traditional damper device, a more classical retrofitting. This preliminary work demonstrates the effectiveness of the inerter-integrated retrofitting strategies considering the non-structural damage caused by a moderate earthquake. It has been found that with an optimal inerter-integrated device, the maximum inter-storey drift of the building will be reduced by 45.64% comparing with the structure without any retrofitting, which is 20.8% further reduction comparing with the structure retrofitted with an optimal damper.
Published Version
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