Lettieri, A;
Elettore, E;
Freddi, F;
Latour, M;
Rizzano, G;
(2021)
Performance-based assessment of seismic-resilient steel moment resisting frames equipped with innovative column base connections.
In:
EUROSTEEL 2021 Sheffield — Steel's coming home.
(pp. pp. 1736-1846).
Wiley: Hoboken, NJ, USA.
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Freddi_Lettieri et al_Performance-based assessment of seismic-resilient steel moment resisting frames equipped with innovative column base connections_AAM.pdf - Accepted Version Download (2MB) | Preview |
Abstract
Low-damage and self-centring column base connections have been proposed in the last two decades as innovative solutions able to provide the seismic resilience in Moment Resisting Frames (MRFs). Although many works have demonstrated the benefits deriving from the adoption of these systems, only a few research studies investigated the significant parameters influencing their self-centring capability. This paper investigates the influence of the frame layout (i.e., sto-reys and bays number) on the seismic performance of perimeter MRFs equipped with damage-free self-centring column bases previously studied by the authors. Nine case-study perimeter steel MRFs are designed and modelled in OpenSees. Incremental Dynamic Analyses are per-formed monitoring both global and storey-level Engineering Demand Parameters, including peak and residual interstorey drifts. Fragility curves are successively used to evaluate the self-centring capability of the structures. The present study provides insights on the use of the adopted con-nections for the residual drift reduction of MRFs and defines the boundaries of the investigated parameters for their application. Results highlight that the self-centring behaviour is particularly sensitive to the number of storeys and tends to reduce with the increasing height of MRFs equipped with the proposed connections.
| Type: | Proceedings paper |
|---|---|
| Title: | Performance-based assessment of seismic-resilient steel moment resisting frames equipped with innovative column base connections |
| Event: | 9th European Conference on Steel and Composite Structures (Eurosteel 2020) |
| Location: | Sheffield, UK |
| Dates: | 01 September 2021 - 03 September 2021 |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1002/cepa.1481 |
| Publisher version: | https://doi.org/10.1002/cepa.1481 |
| 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 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/10134689 |
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