Di Sarno, Luigi;
D'Aniello, Mario;
Freddi, Fabio;
Bousias, Stathis;
Wu, Jingren;
Khani, Reza;
(2025)
Response Analysis of Column-Base Connections
in Existing Steel Frames.
In: O’Reilly, Gerard J and Calvi, Gian Michele, (eds.)
Engineering Research Infrastructures for European Synergies: Proceedings of ERIES-IW2025.
(pp. pp. 159-169).
Springer: Cham, Switzerland.
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Abstract
The seismic response of existing steel frames is significantly affected by the behaviour of column-base connections. Depending on their design, these connections can exhibit significantly different stiffness, strength, and ductility. While extensive research has been conducted to understand the response of these connections across a wide range of configurations, most studies have focused on uniaxial loading. However, the three-dimensional nature of earthquakes typically subjects these connections to biaxial bending and shear forces. To address this research gap, the ERIES-HITBASE (Earthquake Assessment of Base-Column Connections in Existing Steel Frames) project experimentally investigated the response of exposed column-base connections via bi-directional pseudo-dynamic (PsD) tests. These tests were carried out on a full-scale, three-dimensional steel frame at the Structures Laboratory of the University of Patras, Greece. The steel frame featured two types of column-base connections, i.e., unstiffened and stiffened, representing respectively the base connections of an external momentresisting frame and an internal gravity frame, respectively. The response of each component of column-base connections was monitored during the PsD-tests to capture their behaviour. This paper presents the preliminary results of numerical simulations conducted for the tested column-base connections. Local and response quantities are investigated, and threshold limits of damage are identified.
| Type: | Proceedings paper |
|---|---|
| Title: | Response Analysis of Column-Base Connections in Existing Steel Frames |
| Event: | Engineering Research Infrastructures for European Synergies: ERIES-IW2025 |
| ISBN-13: | 978-3-031-98892-9 |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1007/978-3-031-98893-6_16 |
| Publisher version: | https://doi.org/10.1007/978-3-031-98893-6_16 |
| Language: | English |
| Additional information: | This chapter is licensed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license and indicate if changes were made. The images or other third party material in this chapter are included in the chapter's Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the chapter's Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. |
| Keywords: | Existing steel frames; base-column connections; Pseudo-dynamic tests; seismic performance; finite element modelling |
| 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/10211995 |
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