Zandonini, R;
Baldassino, N;
Freddi, F;
Roverso, G;
(2019)
Steel-concrete frames under the column loss scenario: An experimental study.
Journal of Constructional Steel Research
, 162
, Article 105527. 10.1016/j.jcsr.2019.02.036.
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Freddi_Zandonini et al_2019_Steel-concrete frame under the column loss scenario - An experimental study - Author's version_v2.pdf - Accepted Version Download (3MB) | Preview |
Abstract
Accidental events, such as impact loading or explosions, are rare events with a very low probability of occurrence. However, their effects often lead to very high human losses and economic consequences. An adequate design against these events should reduce the risk for the life of the occupancy, minimize the damage extension and enable a quick rebuilding and reuse. A structure fulfilling these requirements is ‘robust’. Different strategies can be pursued for accidental events, and among them, methods based on the residual strength or the alternate load path are frequently adopted because applicable to a vast range of structures. Adequate design strategies based on them require an in-deep knowledge of load transfer mechanisms from the damaged to the undamaged part of the structure. As to the frames, the important role of joint ductility was pointed out in recent studies. Besides, the flooring systems substantially affect the spread of the damage, but the research on this subject is still very limited. The present study focuses on steel-concrete composite frames under the column loss scenario. It aims to better understand the influence of both frame continuity and floor systems in the development of 3D membrane action. Two geometrically different 3D steel-concrete composite full-scale substructures were extracted from reference buildings and tested simulating the column collapse scenario. This paper illustrates the preparatory studies, the main features of the specimens and the outcomes of the first test. The test provided an insight in the need for an enhanced design of joints and pointed out the key features of the response of the floor system.
| Type: | Article |
|---|---|
| Title: | Steel-concrete frames under the column loss scenario: An experimental study |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1016/j.jcsr.2019.02.036 |
| Publisher version: | https://doi.org/10.1016/j.jcsr.2019.02.036 |
| 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. |
| Keywords: | Robustness, Progressive collapse, Steel-concrete composite frames, 3D full-scale test, Slab-beam-systems, Semi-rigid joints |
| 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/10080447 |
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