Di Sarno, Luigi;
Wu, Jingren;
Stathas, Nikolaos;
Freddi, Fabio;
D’Aniello, Mario;
Bousias, Stathis;
Landolfo, Raffaele;
(2024)
Seismic performance of exposed column-base plate connections in existing steel frames.
In:
Proceedings of the 18th World Conference on Earthquake Engineering (WCEE2024).
International Association for Earthquake Engineering: Milan, Italy.
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Abstract
Existing steel frames not conforming to modern seismic design codes are typically vulnerable to earthquakes due to inadequate seismic detailing. This type of structure is commonly equipped with exposed column-base connections that are usually semi-rigid and/or partial strength. Therefore, their behaviour may significantly affect the seismic performance of the structure. However, current code provisions provide limited recommendations for the seismic performance assessment and retrofit of exposed column-base connections in existing frames. The ERIES HIT-BASE (Earthquake Assessment of Base-Column Connections in Existing Steel Frames) project aims to experimentally investigate the performance of existing steel frames with exposed column-base plate connections subjected to earthquake sequences. A non-seismically designed steel frame is used as case study building to conduct bi-directional pseudo-dynamic tests at the STRULAB-RW at the University of Patras, Greece. The performance of two types of column-base plate connections, i.e., stiffened and unstiffened, respectively representing the base connections of an external moment-resisting frame and an internal gravity frame, are investigated. Preliminary numerical simulations on a simplified model developed in OpenSees were carried out to support the design of the specimen, the loading protocol and seismic intensities to be used during the test. This paper introduces the motivations and objectives of the project, the preparatory work done to design the experimental work, the dynamic identification and the preliminary results of pseudo-dynamic tests of the experimental mockup.
| Type: | Proceedings paper |
|---|---|
| Title: | Seismic performance of exposed column-base plate connections in existing steel frames |
| Event: | 18th World Conference on Earthquake Engineering (WCEE2024) |
| Location: | Milan |
| Dates: | 30 Jun 2024 - 5 Jul 2024 |
| Open access status: | An open access version is available from UCL Discovery |
| Publisher version: | https://proceedings-wcee.org/index.html |
| 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 Maths and Physical Sciences UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Inst for Risk and Disaster Reduction |
| URI: | https://discovery.ucl.ac.uk/id/eprint/10195528 |
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