| 篇名： | Flexural performance of bamboo scrimber beams strengthened with fiber-reinforced polymer | 论文类型： | SCI |
| 刊名： | Construction and Building Materials 2017,142(7) |
| 作者： | Yang Wei , Xuewei Ji, Maojun Duan, Guofen Li | 发表时间： | 2017-03-22 |
| 关键词： | Bamboo,Beams,Fiber-reinforced polymer (FRP) Strengthening,Flexural performance | PDF文档： | 查看/下载 |
| 摘要： | This study presents a new type of bamboo scrimber beams that are strengthened by fiber-reinforced polymer (FRP) composite sheets embedded in the internal tensile region with an additional bamboo plate. To investigate the flexural performance of the bamboo scrimber beams, four-point bending tests were conducted to determine the failure modes, the load-displacement relationship, the load carrying capacity and the flexural rigidity of reinforced bamboo scrimber beams. The main parameters in the tests were the number of FRP layers and the type of FRP. The results indicated that the failure of the strength- ened beams started with tensile fractures on the bottom bamboo plates, and no slipping was observed between the strengthening materials and the original bamboo beams prior to the rupturing of the bam- boo plates. The flexural load-carrying capacity and the flexural rigidity of the strengthened beams effec- tively increased due to the FRP composite sheets and an additional bamboo plate. The strengthening method has a beneficial effect on promoting the compression behavior in the compression zone of the cross-sections of bamboo beams. Based on a simple stress-strain model of bamboo scrimber, a theoretical method for predicting the flexural load carrying capacity was developed. The predicted results are con- sistent with the test results. |
