Russell, J., Owen, J. and Hajirasouliha, I. orcid.org/0000-0003-2597-8200 (2018) Nonlinear behaviour of reinforced concrete flat slabs after a column loss event. Advances in Structural Engineering, 21 (14). pp. 2169-2183. ISSN 1369-4332
Abstract
Previous studies have demonstrated that reinforced concrete flat slab structures could be vulnerable to progressive collapse. Although such events are highly dynamic, simplified static analyses using the sudden column loss scenario are often used to gain an indication into the robustness of the structure. In this study, finite element analysis is used to replicate column loss scenarios on a range of RC flat slab floor models. The model was firstly validated against the results of scaled slab experiments and then used to investigate the influence of different geometric and material variables, within standard design ranges, on the response of the structure. The results demonstrate that slab elements are able to effectively redistribute loading after a column loss event, and therefore prevent a progressive collapse. However, the shear forces to remaining columns were 159% of their fully supported condition and increased to 300% when a dynamic amplification factor of 2.0 was applied. It is shown that this can potentially lead to a punching shear failure in some of the slab elements.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © The Author(s) 2018. This is an author produced version of a paper subsequently published in Advances in Structural Engineering. Uploaded in accordance with the publisher's self-archiving policy. Article available under the terms of the CC-BY-NC-ND licence (https://creativecommons.org/licenses/by-nc-nd/4.0/). |
Keywords: | Progressive Collapse; Column Loss; RC Flat Slab; Punching Shear |
Dates: |
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Institution: | The University of Sheffield |
Academic Units: | The University of Sheffield > Faculty of Engineering (Sheffield) > Department of Civil and Structural Engineering (Sheffield) |
Depositing User: | Symplectic Sheffield |
Date Deposited: | 20 Apr 2018 09:40 |
Last Modified: | 20 Apr 2021 15:39 |
Status: | Published |
Publisher: | SAGE Publications |
Refereed: | Yes |
Identification Number: | 10.1177/1369433218768968 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:129649 |