Abstract
The flexural behavior of twelve glulam beams reinforced with vertical CFRP lath under different reinforcement ratio and three comparison beams were tested to failure to investigate the failure modes, failure mechanism and flexural behaviors. The ultimate load, flexural stiffness and ductility of CFRP lath reinforced laminated timber beams were compared with those of unreinforced control beams. The test results show that reinforced laminated timber beams with CFRP lath can increase the ultimate load by 34.2%-52.3%, and bending stiffness by 8.0%-28.5%. Furthermore, the failure modes of the reinforced beams show ductile compression failures. Meanwhile, the comparison of two CFRP lath enhancement methods shows that the ultimate load and the maximum displacement of beams reinforced with vertical CFRP lath inlay are significantly improved. Based on the linear elastic theory and the mechanical model of the isolated elements, the equations for ultimate loads of three different destructive forms were developed. Compared with a large number of test data, the formula shows a satisfied accuracy.
| Original language | English |
|---|---|
| Pages (from-to) | 151-157 |
| Number of pages | 7 |
| Journal | Jianzhu Jiegou Xuebao/Journal of Building Structures |
| Volume | 35 |
| Issue number | 8 |
| State | Published - 1 Aug 2014 |
Keywords
- CFRP lath
- Flexural behavior
- Glulam beam
- Static test
- Vertical inlay