Elettore, Elena;
Francavilla, Antonella;
Latour, Massimo;
Rizzano, Gianvittorio;
Freddi, Fabio;
(2024)
Preliminary Numerical Study of a Steel Concentrically Braced Frame Equipped with Dissipative Braces and Self-Centring Column Bases.
In:
Proceedings - XXIX Congresso C.T.A. : Ingegneria e Architettura delle strutture metalliche: nuove sfide tra sicurezza, sostenibilità e digitalizzazione.
Collegio dei Tecnici dell'Acciaio (C.T.A.)
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Abstract
The use of dissipative braces in steel structures has demonstrated to be an effective solution to achieve systems characterised by high stiffness, strength, and energy dissipation capacity. Such structures are usually arranged as Concentrically Braced Frames (CBFs) and the dissipative braces are usually composed of an elastic brace arranged in series with a dissipative device, which can consist of Friction devices (FDs), characterised by an almost perfectly plastic behaviour, and providing limited damage. Recent studies also demonstrated how the use of such devices can be beneficial for the definition of Self-Centring Column Bases (SC-CBs) in terms of residual drift reduction and reparability. The present study provides some preliminary results on the response of combined system coupling dissipative braces with FDs and SC-CBs. An experimental campaign has been planned on a two-storey steel specimen for such a system. This paper introduces the preliminary work for the specimen’s design and tries to foresee the experimental outcomes. Non-linear models of the CBF with dissipative braces (DCBF) and the equivalent frame with SC-CBs (SC-DCBF) are developed in OpenSees. Non-linear incremental dynamic analyses are performed to compare the seismic performances of both configurations. Further numerical investigations are conducted to assess the structural performance, reparability, and resilience of the adopted technology.
| Type: | Proceedings paper |
|---|---|
| Title: | Preliminary Numerical Study of a Steel Concentrically Braced Frame Equipped with Dissipative Braces and Self-Centring Column Bases |
| Event: | XXIX Congresso C.T.A. (CTA 2024) |
| Location: | Milan, Italy |
| Dates: | 26 Sep 2024 - 28 Sep 2024 |
| Open access status: | An open access version is available from UCL Discovery |
| Publisher version: | https://www.collegiotecniciacciaio.it/congressi/pr... |
| 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. |
| 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-pp.ucl.ac.uk/id/eprint/10200925 |
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