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Seismic design of an innovative self-centring hybrid coupled wall system an eight-story case study building

Farahi, Mojtaba; Freddi, Fabio; Latur, Massimo; (2023) Seismic design of an innovative self-centring hybrid coupled wall system an eight-story case study building. In: Proceedings of Conference Earthquake risk and engineering towards a resilient world (SECED 2023). Society for Earthquake and Civil Engineering Dynamics (SECED): Cambridge, UK. Green open access

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Abstract

Several innovative solutions have been proposed over the last few decades to improve the seismic resilience of building structures. Most of these solutions aim to concentrate the damage in a few components and reduce residual deformations, thus expediting the repair time and operations in the aftermath of a damaging event. This paper presents the design and investigates the seismic performance of an innovative hybrid wall system consisting of a reinforced concrete (RC) wall coupled with two steel side columns. In this system, the coupling beams are integrated with friction-damped self-centring links, which dissipate the seismic energy while also limiting the residual deformations. The coupling action in the side steel columns also reduces the flexural demand at the wall base under lateral loading. The efficiency of a simple design methodology is investigated by targeting the concentration of non-linear deformations and energy dissipation in the self-centring links, hence limiting the damage to the RC wall. An eightstory case study structure is selected to perform a parametric analysis on the key design parameters of the self-centring hybrid wall (SCHW) structure and to investigate their influence on the seismic response. Detailed finite element models are developed in OpenSees to perform nonlinear static and time-history analyses. The results inform on the validity of the design method and provide insights into the optimal choice of the key design parameters.

Type: Proceedings paper
Title: Seismic design of an innovative self-centring hybrid coupled wall system an eight-story case study building
Event: Conference Earthquake risk and engineering towards a resilient world (SECED 2023)
Open access status: An open access version is available from UCL Discovery
Publisher version: https://www.seced.org.uk/index.php/seced-2023-proc...
Language: English
Additional information: This version is the version of record. For information on re-use, please refer to the publisher’s terms and conditions.
UCL classification: UCL
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-pp.ucl.ac.uk/id/eprint/10177366
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