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Experimental invest...
Experimental investigation of structural failure during the cooling phase of a fire : Concrete columns
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- Gernay, Thomas (författare)
- Johns Hopkins University, USA
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- Franssen, Jean-Marc (författare)
- Liege University, Belgium,University of Liège
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- Robert, Fabienne (författare)
- CERIB Fire Testing Centre, France,CERIB Fire Testing Centre (CEF)
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- McNamee, Robert (författare)
- Lunds universitet,RISE,Brand och Säkerhet,Lund University, Sweden,Avdelningen för Brandteknik,Institutionen för bygg- och miljöteknologi,Institutioner vid LTH,Lunds Tekniska Högskola,Division of Fire Safety Engineering,Department of Building and Environmental Technology,Departments at LTH,Faculty of Engineering, LTH,Research Institutes of Sweden (RISE)
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- Felicetti, Roberto (författare)
- Politecnico di Milano, Italy,Polytechnic University of Milan
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- Bamonte, Patrick (författare)
- Politecnico di Milano, Italy,Polytechnic University of Milan
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- Brunkhorst, Sven (författare)
- Technische Universität Braunschweig, Germany,Technical University of Braunschweig
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- Mohaine, Siyimane (författare)
- CERIB Fire Testing Centre, France
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- Zehfuß, Jochen (författare)
- Technische Universität Braunschweig, Germany,Technical University of Braunschweig
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(creator_code:org_t)
- Elsevier Ltd, 2022
- 2022
- Engelska.
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Ingår i: Fire safety journal. - : Elsevier Ltd. - 0379-7112 .- 1873-7226. ; 134
- Relaterad länk:
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http://dx.doi.org/10...
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https://urn.kb.se/re...
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https://doi.org/10.1...
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https://lup.lub.lu.s...
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Abstract
Ämnesord
Stäng
- Structures may collapse during the cooling phase of a fire, yet standard furnace tests only measure the response under heating. There lacks experimental test protocols and design methods to assess resistance until burnout. This paper describes a new experimental approach for burnout resistance evaluation, reports experimental data on loaded reinforced concrete columns in furnace tests with cooling down phases, and presents numerical models of the tests. The test results show that columns designed for a standard fire resistance of 60 min exhibited a fire resistance of 83 min in the furnace but failed during the cooling phase when the burners were shut off after 72 min while the load was maintained. Two other specimens survived exposure to heating of 45 and 55 min, respectively, and their residual capacity was measured. Finite element analyses show agreement with the tests, showing applicability of numerical methods for evaluating burnout resistance of concrete columns. These findings demonstrate experimentally that delayed thermal-mechanical effects can jeopardize structural stability in real fires, and provide a framework to measure these effects. Moving beyond fire resistance to quantify the response until burnout will support designs for safety of occupants and firefighters throughout the fire and promote repairability and resilience.
Ämnesord
- TEKNIK OCH TEKNOLOGIER -- Samhällsbyggnadsteknik -- Husbyggnad (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Civil Engineering -- Building Technologies (hsv//eng)
- TEKNIK OCH TEKNOLOGIER -- Samhällsbyggnadsteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Civil Engineering (hsv//eng)
Nyckelord
- Burnout resistance
- Concrete columns
- Cooling phase
- Fire tests
- Numerical model
- Structural failure
- Concrete construction
- Cooling
- Failure (mechanical)
- Fracture mechanics
- Furnaces
- Numerical methods
- Numerical models
- Reinforced concrete
- Stability
- Structural integrity
- Concrete column
- Experimental investigations
- Experimental test
- Furnace tests
- Test designs
- Test protocols
- Fire resistance
- Burnout resistance
- Concrete columns
- Cooling phase
- Fire tests
- Numerical model
- Structural failure
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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