| Autor: |
Gi-Soup Hong, Young-Kyun Hong, Jai-Woo Park |
| Rok vydání: |
2008 |
| Předmět: |
|
| Zdroj: |
Journal of the Earthquake Engineering Society of Korea. 12:21-28 |
| ISSN: |
1226-525X |
| DOI: |
10.5000/eesk.2008.12.1.021 |
| Popis: |
The CFT (Concrete Filled Steel Tube) columns became popular in high rise building construction due to not only its composite effect but also economic advantage. However, it has been pointed out in various previous researches that the current practice in CFT columns may lead the steel tube to probable local buckling at critical sections of the columns right after yielding. To resolve such a problem, the TR-CFT (Transversely Reinforced Concrete Filled Steel Tube) column is proposed to control or at least delay the local buckling state at the critical section by wrapping the CFT columns with carbon fiber sheet. The validity of the proposed column system is validated through the present paper by observing the experimental performance and comparing it with the analytical prediction of the TR-CFT columns with hish strength concrete. It is also shown that the current design code provisions such as ACI-318, in which the contribution of concrete confining effect filled in steel tube is not appropriately accounted for, may contain too much conservatism. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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