Numerical simulation of fire integrity resistance of full-scale gypsum-faced cross-laminated timber wall

Autor: M. El Ganaoui, Yann Rogaume, V. D. Thi, M. Oudjene, Mourad Khelifa
Přispěvatelé: Laboratoire d'Etude et de Recherche sur le Matériau Bois (LERMAB), Université de Lorraine (UL), French Ministry of High Education and Research (MESR)
Rok vydání: 2018
Předmět:
Gypsum
CLT
0211 other engineering and technologies
Full scale
Fire safety
020101 civil engineering
Context (language use)
02 engineering and technology
engineering.material
Civil engineering
Gypsum board
0201 civil engineering
Numerical methodology
[SPI]Engineering Sciences [physics]
021105 building & construction
Cross laminated timber
[SPI.GPROC]Engineering Sciences [physics]/Chemical and Process Engineering
FEM
Resistance (ecology)
Computer simulation
Thermal behaviour
General Engineering
Condensed Matter Physics
[SPI.MECA.STRU]Engineering Sciences [physics]/Mechanics [physics.med-ph]/Mechanics of the structures [physics.class-ph]
[SPI.GCIV]Engineering Sciences [physics]/Civil Engineering
Integrity failure
[SPI.MECA.THER]Engineering Sciences [physics]/Mechanics [physics.med-ph]/Thermics [physics.class-ph]
engineering
Environmental science
Fe model
Zdroj: International Journal of Thermal Sciences
International Journal of Thermal Sciences, Elsevier, 2018, 132, pp.96-103. ⟨10.1016/j.ijthermalsci.2018.06.003⟩
ISSN: 1290-0729
DOI: 10.1016/j.ijthermalsci.2018.06.003
Popis: International audience; Fire design requires three fire resistance criteria, namely integrity, insulation and load-bearing. In particular, repartition wall systems used in residential and commercial buildings are required to provide certification of insulation and integrity fire resistance and have to be analysed in the context of the characteristic time scales of a fire. This paper presents a numerical methodology to simulate the fire integrity resistance of full-scale timber based wall systems exposed to fire. The main contribution of this paper, with regard to the existing literature, is the presence of cross-laminated timber (CLT) panel in the central part of the wall system, where the pyrolysis of timber was modelled explicitly in the energy balance equation system. For this end, a user-subroutine, called UMATHT, is developed and successfully implemented in the Abaqus finite element code for thermal analysis. The falling off of the gypsum boards under fire was considered implicitly in the FE model based on experimental observations. The obtained results show clearly the need to take into account explicitly the cracks and falling off of the gypsum boards for an appropriate prediction of the integrity fire resistance in order to reduce expensive experimental procedures.
Databáze: OpenAIRE
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