Di Benedetto, Sabatino;
Ortiz Pastorino, Camila;
Farahi, Mojtaba;
Latour, Massimo;
Freddi, Fabio;
(2024)
Self-centering friction-based devices for hybrid coupled walls: a preliminary finite element study.
In:
Proceedings of the 18th World Conference on Earthquake Engineering (WCEE2024).
World Conference on Earthquake Engineering (WCEE): Milan, Italy.
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Abstract
The development of seismic-resilient structural solutions to protect human lives and ensure immediate functionality after severe seismic events is an inevitable challenge in modern earthquake engineering. Innovative structural systems with minimum earthquake-induced damage and residual deformations allow fast recovery of structures and can be considered effective strategies towards seismic resilient constructions. In this context, this study focuses on the performance of a self-centering solution that can be implemented within coupling beams to form Self-Centering Hybrid Coupled Walls (SC-HCW). The seismic-resisting system selected in this study consists of a Reinforced Concrete (RC) shear wall connected to two steel side columns through steel coupling beams equipped with friction-damped self-centering (FDSC) devices. The FDSC devices integrate an energy dissipation component achieved through a friction-slip mechanism and Post-Tensioned (PT) bars, providing the self-centering capability to the device. Recent studies have shown that adopting this type of SC-HCW allows achieving high energy dissipation capacity with negligible residual drifts. The present study performs a detailed numerical investigation focusing on the local response of FDSC devices to shed light on their optimal design. Different configurations of FDSC devices are considered, and their performance in terms of energy dissipation and self-centering capacity is evaluated through Finite Element (FE) simulations under monotonic and cyclic loading. The obtained results are referred to validate the efficiency of analytical formulations used to design the intended FDSC devices. The results are also used to investigate how the overall performance of FDSC devices is affected by their geometry.
| Type: | Proceedings paper |
|---|---|
| Title: | Self-centering friction-based devices for hybrid coupled walls: a preliminary finite element study |
| Event: | 18th World Conference on Earthquake Engineering (WCEE2024) |
| Dates: | 30 Jun 2024 - 5 Jul 2024 |
| Open access status: | An open access version is available from UCL Discovery |
| Publisher version: | https://www.wcee2024.it/ |
| 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 > Dept of Civil, Environ and Geomatic Eng |
| URI: | https://discovery.ucl.ac.uk/id/eprint/10195509 |
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