Abstract
A concrete beam can be strengthened with fiber-reinforced polymer (FRP) straps attached to the tension surface. Stress concentration within the strap-end region may induce premature debonding failure, and this is one of the main disadvantages hindering this application. Experimental studies indicate that external end-anchor systems can delay or prevent end debonding. However, this technique needs to be thoroughly investigated prior to safe and widespread application. Firstly, this paper introduces a conceptual external end-anchor system. Then, a finite element (FE) analysis is done for a concrete beam strengthened with this system. Finally, results from the FE model and an analytical model are compared, and good agreement between them is observed. Both the numerical and analytical results indicate that an external end-anchor helps to mitigate stress concentration within the strap-end region.
| Original language | English |
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| Title of host publication | Proceedings of the 4th Asia-Pacfic Conference on FRP in Structures (APFIS 2013) |
| Subtitle of host publication | Melbourne Vic Australia; 11-13 December 2013 |
| Editors | Riadh Al-Mahaidi, Scott T. Smith, Yu Bai, Xiao-Ling Zhao |
| Place of Publication | Melbourne Vic Australia |
| Publisher | International Institute for FRP in Construction (IIFC) |
| Pages | 1-9 |
| Number of pages | 9 |
| ISBN (Electronic) | 9780987593016 |
| Publication status | Published - 2013 |
| Externally published | Yes |
| Event | Asia-Pacific Conference on FRP in Structures 2013 - Melbourne, Australia Duration: 11 Dec 2013 → 13 Dec 2013 Conference number: 4th |
Conference
| Conference | Asia-Pacific Conference on FRP in Structures 2013 |
|---|---|
| Abbreviated title | APFIS 2013 |
| Country/Territory | Australia |
| City | Melbourne |
| Period | 11/12/13 → 13/12/13 |
Keywords
- Bonded FRP straps
- End anchor
- Finite element analysis
- Interfacial stresses
- Mechanical anchor
- Strengthening of beams