Di Sarno, L;
Gutiérrez-Urzúa, F;
Freddi, F;
D'Aniello, M;
Landolfo, R;
Kwon, O-S;
Bousias, S;
... Castellano, MG; + view all
(2019)
Pseudo-Dynamic testing of existing steel frames with masonry infills: assessment and retrofitting with BRBs.
In:
XVIII National Conference ANIDIS, L'Ingegneria sismica in Italia Proceedings.
ANIDIS: Ascoli Piceno, Italy.
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Abstract
Many existing steel multi-storey frames in Europe were designed prior to the provisions of modern seismic design codes; therefore, they often exhibit low resistance to earthquakes due to their insufficient energy dissipation capacity. However, the current framework for assessing existing structures in EC8-3 is inadequate and should be reviewed. Particular attention should be paid to the contribution from masonry infill walls as they significantly affect the modal properties and the lateral stiffness of structures. To this end, the HITFRAMES (i.e., HybrId Testing of an Existing Steel Frame with Infills under Multiple EarthquakeS) SERA project experimentally evaluates the seismic performance of a case study structure representative of non-seismically designed steel frames in Europe including the effects of the masonry infills. A retrofitted configuration of the structure, based on the use of Buckling Restrained Braces, is also tested in order to provide information about the effectiveness of this type of devices. This paper illustrates the preliminary analyses required for the design and assessment of the case study structure that will be tested within the HITFRAMES SERA project. It attempts to simulate its non-linear behaviour to complement the experiment design and to forecast the outcome of the tests. The sample building is assessed as a bare and infilled frame under the EC8-3 framework by non-linear static analysis and comparisons are made between the two situations to estimate the influence of the infills. Then, the retrofitted building is similarly assessed and comparison is made with the original structure. Finally, non-linear time history analyses are performed on all the structural configurations. The comparison allows to provide insights on the impact of the masonry infills and of the dissipative devices in the numerical simulations and to critically discuss the drawbacks of the current version of the EC8-3.
| Type: | Proceedings paper |
|---|---|
| Title: | Pseudo-Dynamic testing of existing steel frames with masonry infills: assessment and retrofitting with BRBs |
| Event: | XVIII National Conference ANIDIS, L'Ingegneria sismica in Italia |
| Location: | Ascoli Piceno, Italy |
| Dates: | 15 September 2019 - 19 September 2019 |
| Open access status: | An open access version is available from UCL Discovery |
| Publisher version: | http://convegno.anidis.it/index.php/anidis/2019 |
| 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. |
| Keywords: | Existing steel frames, masonry infills, buckling restrained braces, seismic response, pseudo-dynamic tests |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices 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/10087623 |
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