Reference : Structural Behaviour of Concrete Columns under Natural Fires
Scientific journals : Article
Engineering, computing & technology : Civil engineering
http://hdl.handle.net/2268/135300
Structural Behaviour of Concrete Columns under Natural Fires
English
Gernay, Thomas mailto [Université de Liège - ULg > Département Argenco : Secteur SE > Ingénierie du feu >]
Dimia, Mohamed Salah [University of Batna > Department of Civil Engineering > > >]
2013
Engineering Computations
Emerald Group Publishing Limited
30
6
Selected papers from International Conference on Recent Advances in Nonlinear Models – Structural Concrete Applications
854 - 872
Yes (verified by ORBi)
International
0264-4401
[en] Concrete columns ; Natural fire ; Constitutive model ; Transient creep ; Delayed collapse
[en] Purpose - The paper aims to give an insight into the behavior of reinforced concrete columns during and after the cooling phase of a fire. The study is based on numerical simulations as these tools are frequently used in structural engineering. As the reliability of numerical analysis largely depends on the validity of the constitutive models, the development of a concrete model suitable for natural fire analysis is addressed in the study.
Design/methodology/approach - The paper proposes theoretical considerations supported by numerical examples to discuss the capabilities and limitations of different classes of concrete models and eventually to develop a new concrete model that meets the requirements in case of natural fire analysis. Then, the study performs numerical simulations of concrete columns subjected to natural fire using the new concrete model. A parametric analysis allows for determining the main factors that affect the structural behavior in cooling.
Findings – Failure of concrete columns during and after the cooling phase of a fire is a possible event. The most critical situations with respect to delayed failure arise for short fires and for columns with low slenderness or massive sections. The concrete model used in the simulations is of prime importance and the use of the Eurocode model would lead to unsafe results.
Practical implications – The paper includes implications for the assessment of the fire resistance of concrete elements in a performance-based environment.
Originality/value – The paper provides original information about the risk of structural collapse during cooling.
Researchers ; Professionals ; Students
http://hdl.handle.net/2268/135300
(c) Emerald

File(s) associated to this reference

Fulltext file(s):

FileCommentaryVersionSizeAccess
Restricted access
Eng Comp J - Gernay.pdf(c) EmeraldAuthor preprint357.42 kBRequest copy

Bookmark and Share SFX Query

All documents in ORBi are protected by a user license.