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Methodology for the assessment and refinement of friction-based dissipative devices

D'Ayala, D; Melatti, V; (2021) Methodology for the assessment and refinement of friction-based dissipative devices. Engineering Structures , 229 , Article 111666. 10.1016/j.engstruct.2020.111666.

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Abstract

An innovative dissipative system for the seismic upgrade of historical buildings is presented. The system comprises a friction-based dissipative device able to provide energy dissipation capacity to connecting walls. To verify the compliance of the device’s initial prototype with the relevant European Standards, a testing and design methodology is developed. This optimisation approach consists of: two tests loops, to identity the dependence of the dissipative device on bolt preloading, type of fasteners, frictional interfaces and environmental conditions; and a design loop where advanced 3D modelling and analysis are used to improve the design according to the experimental results. The performance is measured by variation of effective damping. This iterative procedure singles out parameters that need improvement and allows to produce two new prototypes, differing by shape and frictional interfaces. The revised prototypes prove to deliver a reliable response to cyclic loading, containing the variation of effective damping well within code requirements, even after exposure to adverse environmental conditions.

Type: Article
Title: Methodology for the assessment and refinement of friction-based dissipative devices
DOI: 10.1016/j.engstruct.2020.111666
Publisher version: https://doi.org/10.1016/j.engstruct.2020.111666
Language: English
Additional information: This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions.
Keywords: Friction devices, Historical masonry buildings, Effective damping, Frictional interfaces, Durability
UCL classification: UCL
UCL > Provost and Vice Provost Offices
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Civil, Environ and Geomatic Eng
URI: https://discovery.ucl.ac.uk/id/eprint/10117882
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