Le, QX;
Torero, JL;
Dao, VTN;
(2021)
Stress–strain–temperature relationship for concrete.
Fire Safety Journal
, 120
, Article 103126. 10.1016/j.firesaf.2020.103126.
Preview |
Text
FISJ-2019-625-R1-Revised-Manuscript.pdf - Accepted Version Download (682kB) | Preview |
Abstract
When concrete structures are subjected to load and temperature simultaneously, it is essential to take into account the coupled effects between stress and expansion. However, due to incomplete understanding, such coupled effects have only been incorporated into current Eurocode 2 (EC2) stress–strain curves by means of empirical correlations. These empirical correlations at different target temperatures are presented in tables that do not allow to clearly identify the correlation chosen to obtain the specific values. A further limitation of these tables is that the relationships cannot be used to evaluate the performance of concrete structures during the cooling phase. In this paper, a physically-based model of the coupled effects between stress and expansion is used to define the strain corresponding to the compressive strength, and thus to develop a simple formulation for stress–strain–temperature relationship of concrete. The results are then compared with the EC2 stress–strain–temperature table. The expression of stress–strain–temperature relationship developed in this paper successfully agrees with the stress–strain curves of concrete in EC2 used for the heating phase. More importantly, the proposed stress–strain–temperature relationship can also be applicable for design purposes of concrete structures during the cooling phase.
| Type: | Article |
|---|---|
| Title: | Stress–strain–temperature relationship for concrete |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1016/j.firesaf.2020.103126 |
| Publisher version: | https://doi.org/10.1016/j.firesaf.2020.103126 |
| Language: | English |
| Additional information: | This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions. |
| Keywords: | Stress–strain–temperature relationship, Structural response, Total strain model, Load-induced thermal strain, Performance-based design |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Civil, Environ and Geomatic Eng |
| URI: | https://discovery.ucl.ac.uk/id/eprint/10100169 |
Loading...
Loading...Loading...Loading...Archive Staff Only
 |
View Item |
