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Title: Seismic performance of buildings retrofitted with nonlinear viscous dampers and adjacent reaction towers
Authors: Impollonia, Nicola
Palmeri, Alessandro
Keywords: Coupled adjacent buildings
Optimal passive control
Nonlinear energy dissipation devices
Seismic retrofitting
Time-history dynamic analyses
Viscous dampers
Issue Date: 2018
Publisher: © Wiley
Citation: IMPOLLONIA, N. and PALMERI, A., 2018. Seismic performance of buildings retrofitted with nonlinear viscous dampers and adjacent reaction towers. Earthquake Engineering and Structural Dynamics, 47 (5), pp.1329-1351.
Abstract: An effective strategy of seismic retrofitting consists of installing nonlinear viscous dampers (NLVDs) between the existing building, with insufficient lateral resistance, and some auxiliary towers, specially designed and erected as reaction structures. This allows improving the seismic performance of the existing building without any major alteration to its structural and non- structural elements, which makes this approach particularly appealing for buildings with heritage value. In this paper, the nonlinear governing equations of the coupled lateral-torsional seismic motion are derived from first principles for the general case of a multi-story building connected at various locations in plan and in elevation to an arbitrary number of multi-story towers. This formulation is then used to assess the performance of the proposed retrofitting strategy for a real case study, namely a five-story student hall of residence in the city of Messina, Italy. The results of extensive time-history analyses highlight the key design considerations associated with the stiffness of the reaction towers and the mechanical parameters of the NLVDs, confirming the validity of this approach
Description: This paper is in closed access until 20/02/2019.
Version: Accepted for publication
DOI: 10.1002/eqe.3020
URI: https://dspace.lboro.ac.uk/2134/28066
Publisher Link: https://doi.org/10.1002/eqe.3020
ISSN: 0098-8847
Appears in Collections:Closed Access (Architecture, Building and Civil Engineering)

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