| Autor: |
Tong Seok Han, Hyun-Kyu Jeon, Kwang-Soo Youm, Young-Sub Shin |
| Rok vydání: |
2011 |
| Předmět: |
|
| Zdroj: |
Journal of Korean Society of Hazard Mitigation. 11:45-52 |
| ISSN: |
1738-2424 |
| DOI: |
10.9798/kosham.2011.11.2.045 |
| Popis: |
To improve fire-resistance of a high strength concrete against spalling under elevated temperature, fibers can be mixed to provide flow paths of evaporated water to the surface of concrete when heated. In this study, the experiment of a column under fire and mechanical loads is conducted and the material model for predicting temperature of reinforcement steel bar and mechanical behavior of fiber-mixed high strength concrete is suggested. The material model in previous studies is modified by incorporating physical behavior of internal concrete and thermal characteristics of concrete at the elevated temperature. Thermo-mechanical analysis of the fiber-mixed high strength concrete column is conducted using the calibrated material model. The performance of the proposed material model is confirmed by comparing thermo-mechanical analysis results with the experiment of a column under fire and mechanical loads. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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