Parametric Investigations on Columns with Un-Bonded Reinforcing Bars for Damage Control
| Autor: | Gongfa Chen, Hiroshi Fukuyama, Hiro Etoh, Muki Teshigawara |
|---|---|
| Rok vydání: | 2007 |
| Předmět: |
Materials science
business.industry Numerical analysis 0211 other engineering and technologies 020101 civil engineering 02 engineering and technology Building and Construction Structural engineering Finite element method 0201 civil engineering Cracking Column (typography) 021105 building & construction Bond slip business Civil and Structural Engineering Parametric statistics |
| Zdroj: | Advances in Structural Engineering. 10:171-181 |
| ISSN: | 2048-4011 1369-4332 |
| Popis: | Influential factors on concrete cracking in column ends are studied by a non-linear finite element model. Following the previous strategy developed in the Building Research Institute in Japan, un-bonded zones are introduced into column ends and additional re-bars added around the un-bonded zones. The parametric studies of the length of the un-bonded zone and the amount of the additional re-bars are conducted. The load-displacement curves and cracking patterns in concrete are obtained and compared for all of the considered designs. The parametric studies show that the length of the un-bonded zone has significant influences on concrete cracking in column ends; the longer the un-bonded zone is, the better the concrete cracking is controlled in column ends. The studies also show that the additional re-bars slightly influence the load-displacement curves and cracking patterns. The influences of the bond-slip on the numerical analysis are also investigated and the proper parameters of the bond-slip are determined and recommended by the parametric studies. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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