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Robustness of steel-concrete flooring systems - An experimental assessment

Zandonini, R; Baldassino, N; Freddi, F; (2014) Robustness of steel-concrete flooring systems - An experimental assessment. Stahlbau , 83 (9) pp. 608-613. 10.1002/stab.201410192. Green open access

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Abstract

Recently, the interest in the mitigation of the damages caused by accidental events increased significantly. The knowledge of loads transfer mechanisms from the damaged to the undamaged part of the structure is the key for developing adequate design strategies. Despite the potential important role of flooring systems, research of this subject is still limited. A European Research Project aims at achieving an insight into the case of steel-concrete composite frames with solid concrete slabs. Two geometrically different 3D composite sub-frames are subjected to the loss of an internal column. The sub-frames are a full-scale portion of 5 stories 3D frames. Equivalence between the sub-frames and the full-frames required a series of careful numerical analysis, which enabled definition of the boundary restraints of the specimens and of the loading sequence in the test. The present paper illustrates these preparatory studies and gives some preliminary information about the outcomes of the first test. Robustheit von Verbunddecken – Eine experimentelle Bewertung. In den letzten Jahren ist das Interesse an der Begrenzung von durch Unfälle bedingten Schäden gewachsen. Die Kenntnis der Lastübertragungsmechanismen von den beschädigten zu den unbeschädigten Tragwerksteilen ist der Schlüssel zur Entwicklung geeigneter Bemessungskonzepte. Trotz der wichtigen Erkenntnis über den Einfluss der Deckenwirkung stehen keine ausreichenden Forschungsergebnisse zu dieser Thematik zur Verfügung. In einem europäischen Forschungsprojekt werden Tragsysteme aus Verbundrahmen mit Stahlbetonplatten untersucht. Dabei werden zwei geometrisch unterschiedliche 3D-Versuchsrahmen auf die extreme Annahme eines Stützenausfalls untersucht. Die Versuchsrahmen sind vollmaßstäblich ausgebildet und repräsentieren den unteren Teil des Rahmentragwerks eines fünfstöckigen Gebäudes. Die Auflagerbedingungen und die Belastungssequenzen der Versuchsrahmen wurden durch zahlreiche numerische Untersuchungen ermittelt, um denjenigen des Rahmensystems vom Gebäude zu entsprechen. Der vorliegende Beitrag zeigt diese Vorstudien und berichtet über einige experimentelle Ergebnisse aus dem ersten Versuch.

Type: Article
Title: Robustness of steel-concrete flooring systems - An experimental assessment
Open access status: An open access version is available from UCL Discovery
DOI: 10.1002/stab.201410192
Publisher version: https://doi.org/10.1002/stab.201410192
Language: English
Additional information: This is the peer reviewed version of the following article: Zandonini, R; Baldassino, N; Freddi, F; (2014) Robustness of steel-concrete flooring systems - An experimental assessment. Stahlbau , 83 (9) pp. 608-613, which has been published in final form by Wiley at https://doi.org/10.1002/stab.201410192. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Self-Archiving.
Keywords: Science & Technology, Technology, Construction & Building Technology, Engineering, Civil, Engineering, Verbundrahmen; Knoten, nachgiebig; Lastabtragungsmechanismus; Versagensfall; Zusammenbruch; Stützenversagen composite frame; joints, semi-rigid; loads transfer mechanisms; case of failure; collapse; failure of column; Versuche - Experimental set-ups; Verbundbau - Composite construction; Raumfachwerke - Spatial structures; Stahlhochbau - Steel buildings
UCL classification: 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/1574762
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