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Influence of transient strain on fire resistance of concrete elements

Limin Lu UGent, Emmanuel Annerel UGent, Luc Taerwe UGent and Yong Yuan (2011) Applications of Structural Fire Engineering, Proceedings. p.109-114
abstract
Reinforced concrete (RC) elements generally have good fire-resistance ability. Knowledge of the temperature dependant material properties of concrete and steel bars is important for understanding of the fire-response of a RC structure. At high temperatures, the total strain of concrete is for a large extent influenced by load dependent strains, the so called transient strain and creep strain. Although these types of strain are not considered in simplified calculation procedures of concrete elements exposed to fire as provided in EN 1992-1-2, they may be of major importance for the development of deformation during heating. Based on the mechanical properties of concrete and steel bars at elevated temperatures as given in literature, a numerical model which includes transient strain and creep strain is proposed. The computational procedure consists of a coupled thermo-mechanical analysis, including the development of the temperature, the deflection and ultimate bending moment. The proposed approach is validated by experimental data from fire tests executed on simply supported slabs exposed to an ISO 834 fire load. The influence of transient train is analyzed by comparing the calculating results.
Please use this url to cite or link to this publication:
author
organization
year
type
conference
publication status
published
subject
in
Applications of Structural Fire Engineering, Proceedings
editor
F Wald, K Horova and J Jirku
pages
109 - 114
conference name
Applications of Structural Fire Engineering (ASFE 2011)
conference location
Prague, Czech Republic
conference start
2011-04-29
conference end
2011-04-29
ISBN
9788001047989
language
English
UGent publication?
yes
classification
C1
copyright statement
I have transferred the copyright for this publication to the publisher
id
2753573
handle
http://hdl.handle.net/1854/LU-2753573
date created
2012-06-18 15:26:42
date last changed
2013-06-20 14:52:03
@inproceedings{2753573,
  abstract     = {Reinforced concrete (RC) elements generally have good fire-resistance ability. Knowledge of the temperature dependant material properties of concrete and steel bars is important for understanding of the fire-response of a RC structure. At high temperatures, the total strain of concrete is for a large extent influenced by load dependent strains, the so called transient strain and creep strain. Although these types of strain are not considered in simplified calculation procedures of concrete elements exposed to fire as provided in EN 1992-1-2, they may be of major importance for the development of deformation during heating. Based on the mechanical properties of concrete and steel bars at elevated temperatures as given in literature, a numerical model which includes transient strain and creep strain is proposed. The computational procedure consists of a coupled thermo-mechanical analysis, including the development of the temperature, the deflection and ultimate bending moment. The proposed approach is validated by experimental data from fire tests executed on simply supported slabs exposed to an ISO 834 fire load. The influence of transient train is analyzed by comparing the calculating results.},
  author       = {Lu, Limin and Annerel, Emmanuel and Taerwe, Luc and Yuan, Yong},
  booktitle    = {Applications of Structural Fire Engineering, Proceedings},
  editor       = {Wald, F and Horova, K and Jirku, J},
  isbn         = {9788001047989},
  language     = {eng},
  location     = {Prague, Czech Republic},
  pages        = {109--114},
  title        = {Influence of transient strain on fire resistance of concrete elements},
  year         = {2011},
}

Chicago
Lu, Limin, Emmanuel Annerel, Luc Taerwe, and Yong Yuan. 2011. “Influence of Transient Strain on Fire Resistance of Concrete Elements.” In Applications of Structural Fire Engineering, Proceedings, ed. F Wald, K Horova, and J Jirku, 109–114.
APA
Lu, L., Annerel, E., Taerwe, L., & Yuan, Y. (2011). Influence of transient strain on fire resistance of concrete elements. In F Wald, K. Horova, & J. Jirku (Eds.), Applications of Structural Fire Engineering, Proceedings (pp. 109–114). Presented at the Applications of Structural Fire Engineering (ASFE 2011).
Vancouver
1.
Lu L, Annerel E, Taerwe L, Yuan Y. Influence of transient strain on fire resistance of concrete elements. In: Wald F, Horova K, Jirku J, editors. Applications of Structural Fire Engineering, Proceedings. 2011. p. 109–14.
MLA
Lu, Limin, Emmanuel Annerel, Luc Taerwe, et al. “Influence of Transient Strain on Fire Resistance of Concrete Elements.” Applications of Structural Fire Engineering, Proceedings. Ed. F Wald, K Horova, & J Jirku. 2011. 109–114. Print.