Numerical Approach to Evaluation of Bond Strength of Headed Bars
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Détails bibliographiques
| Auteur(s): |
Jin-Soo Hong
Hyung-Suk Jung Baek-Il Bae Chang-Sik Choi |
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| Médium: | papier de conférence | ||||
| Langue(s): | anglais | ||||
| Conférence: | 18th IABSE Congress: Innovative Infrastructures – Towards Human Urbanism, Seoul, Korea, 19-21 September 2012 | ||||
| Publié dans: | IABSE Congress Seoul 2012 | ||||
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| Page(s): | 1958-1964 | ||||
| Nombre total de pages (du PDF): | 7 | ||||
| DOI: | 10.2749/222137912805112617 | ||||
| Abstrait: |
This paper presents the numerical approach to evaluation of bond strength of headed bars. Bond strength of headed bars reach its maximum before the head fully comes in to play and the bars undergoes significant slip, losing a major portion of its bond, while the head is fully bearing against the concrete. With average bond stress concept, reduced bond strength from splitting failure in that phenomenon cannot be properly described. Therefore local bond stress-slip relationship and numerical approach were used to calculate bond strength of headed bar. After local bond stress-slip model was made with 90 lap splice tests, bond strength of headed bars was calculated using same bond-slip algorithm and different boundary condition. The analytical results show a considerable difference in bond stress of headed bars with experimental results of previous studies. The cause of these results was under discussion in the last chapter. |
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