Numerical evaluation of the post-earthquake fire resistance of CFRP-strengthened reinforced concrete joints based on experimental observations

Behnam, Behrouz, Ronagh, Hamid Reza and Lim, Pang Jen (2015) Numerical evaluation of the post-earthquake fire resistance of CFRP-strengthened reinforced concrete joints based on experimental observations. European Journal of Environmental and Civil Engineering, 20 2: 142-160. doi:10.1080/19648189.2015.1018448


Author Behnam, Behrouz
Ronagh, Hamid Reza
Lim, Pang Jen
Title Numerical evaluation of the post-earthquake fire resistance of CFRP-strengthened reinforced concrete joints based on experimental observations
Journal name European Journal of Environmental and Civil Engineering   Check publisher's open access policy
ISSN 1964-8189
2116-7214
Publication date 2015-03-05
Year available 2015
Sub-type Article (original research)
DOI 10.1080/19648189.2015.1018448
Volume 20
Issue 2
Start page 142
End page 160
Total pages 19
Place of publication Abingdon, United Kingdom
Publisher Taylor and Francis Ltd.
Language eng
Abstract This article describes experimental and numerical studies on the structural resistance of two reinforced concrete beam-column joints. While both specimens are of similar configurations as for geometry, amount and type of steel reinforcement and concrete strength, the second is strengthened by means of carbon fibre-reinforced polymer (CFRP) at the vicinity of the joint in order to relocate the plastic hinge away from the column extremity towards the beam. Both specimens are subjected to a cyclic load followed by a generalised exponential fire curve, which implicitly represents a post-earthquake fire (PEF). The PEF resistance of the specimens subjected to various damage levels such as immediate occupancy (IO), life safety (LS) and collapse prevention (CP) is then evaluated based on finite element analysis. The results show that while the fire resistances of the original specimen subjected to LS and CP damage levels are about 32 and 15 min, respectively, they increase in the CFRP-strengthened specimen to about 43 and 23 min, respectively. This represents a 25% increase at LS level and a 35% increase at CP level.
Keyword post-earthquake fire (PEF)
fire resistance
reinforced concrete structures
performance-based design
hinge relocation
carbon fibre-reinforced polymers (CFRP)
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: School of Civil Engineering Publications
Official 2016 Collection
 
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