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Steel and Composite Structures Volume 8, Number 3, June 2008 , pages 243-264 DOI: https://doi.org/10.12989/scs.2008.8.3.243 |
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Experimental investigation of the behaviour of a steel sub-frame under a natural fire |
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Aldina Santiago, Luis Simoes da Silva, Gilberto Vaz, Paulo Vila Real and Antonio Gameiro Lopes
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Abstract | ||
This paper details a testing facility (?NATURAL FIRE FACILITY?) that allows closelycontrolled experimental testing on full-scale sub-frames while reproducing the spatially transient temperature conditions measured in real fires. Using this test facility, an experimental investigation of six steel sub-frames under a natural fire was carried out at the Department of Civil Engineering of the University of Coimbra. The main objective of these tests was to provide insight into the influence of these connection types on the behaviour of steel sub-structures under fire. The experimental layout is defined by two thermally insulated HEA300 columns and an unprotected IPE300 beam with 5.7 m span,supporting a composite concrete slab. Beam-to-column connections are representative of the most common joint type used on buildings: welded joints and extended, flush and partial depth plate. Finally, the available results are presented and discussed: evolution of the steel temperature; development of displacements and local deformations and failure modes on the joints zone. | ||
Key Words | ||
structural engineering; steel and composite structures; fire behaviour; full-scale tests; structural integrity | ||
Address | ||
Aldina Santiago, Luis Simoes da Silva : ISISE - Department of Civil Engineering, University of Coimbra, Coimbra, Portugal Gilberto Vaz : Department of Mechanical Engineering, ISEC - Polytechnic Institute of Coimbra, Coimbra, Portugal Paulo Vila Real : LABEST - Department of Civil Engineering, University of Aveiro, Aveiro, Portugal Antonio Gameiro Lopes : Department of Mechanical Engineering, University of Coimbra, Coimbra, Portugal | ||