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Sub-frames with reverse channel connectiolns to CFT composite columns: experimental evaluation
University of Coimbra, Department of Civil Engineering.
ISISE, Department of Civil Engineering, University of Coimbra, University of Coimbra, Department of Civil Engineering.
Virginia Polytechnic Institute and State University, Universidade de Coimbra , ISISE, Department of Civil Engineering, University of Coimbra.
Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Structural and Construction Engineering.ORCID iD: 0000-0002-7286-5500
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2015 (English)In: Advanced steel construction, ISSN 1816-112X, Vol. 11, no 1, p. 111-126Article in journal (Refereed) Published
Abstract [en]

This paper presents the experimental results of the investigation on the coupled joint-structure behaviour of the composite sub-frame, using the reverse channel connections between an I-beam and the concrete filled tube (CFT) columns. This experimental programme includes seven full-scale tests: three tests at ambient temperature and four tests under heating-cooling curves. The parametric study was dedicated to: temperature-time curve and channel wall thickness (8, 10 and 12 mm). The main objective of these tests is to provide experimental information on the behaviour of the reverse channel joints and its influence on the structure under a heating-cooling fire. The restraining effects from the unaffected part of surrounding structure induce highly variable loading histories on the joints during fire; therefore the investigation on coupled joint-structure behaviour should lead to a realistic prediction of progressive collapse of the structure.

Place, publisher, year, edition, pages
2015. Vol. 11, no 1, p. 111-126
National Category
Building Technologies
Research subject
Steel Structures
Identifiers
URN: urn:nbn:se:ltu:diva-13734DOI: 10.18057/IJASC.2015.11.1.7Local ID: d031243e-f6cc-4005-9e10-d3965cde5122OAI: oai:DiVA.org:ltu-13734DiVA, id: diva2:986687
Note

Validerad; 2015; Nivå 2; 20150320 (andbra)

Available from: 2016-09-29 Created: 2016-09-29 Last updated: 2020-03-06Bibliographically approved

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Iqbal, NaveedVeljkovic, Milan

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