碳纤维增强重组竹梁的抗弯性能

发布时间：2018-03-23 08:41

本文选题：重组竹梁　切入点：碳纤维增强聚合物加固　出处：《林业工程学报》2017年06期 　论文类型：期刊论文

【摘要】：研究了重组竹梁在碳纤维增强聚合物(CFRP)两种加固方法后的抗弯承载力特性和破坏模式,第一种加固方法为仅在重组竹梁受拉区的底部粘贴CFRP,第二种加固方法为在重组竹梁受拉区的底部和所有指接位置均粘贴碳纤维布,对加固后的重组竹梁进行竖向荷载作用下的静力加载抗弯试验。试验结果表明:重组竹梁经过第一种方法加固后,其极限承载能力比加固前提高了14.0%,对于挠度达到其正常使用的极限状态时的承载能力比未加固前的重组竹梁提高了6.5%;第二种加固方法与第一种相比,其极限抗弯承载能力并未得到提升,反而有所下降,但是对于挠度达到其正常使用的极限状态时的承载能力比加固前提高了19.6%。使用CFRP底部加固后,重组竹梁的抗弯承载力和变形性能相比加固前得到了明显的改善。
[Abstract]:The flexural bearing capacity and failure mode of reconstituted bamboo beams reinforced with carbon fiber reinforced polymer (CFRP) were studied. The first method is to attach CFRP only to the bottom of the tensile zone of the reconstituted bamboo beam, and the second method is to paste the carbon fiber cloth at the bottom and all the finger joint positions of the reconstituted bamboo beam. The static bending test of the reinforced reconstituted bamboo beam under vertical load is carried out. The experimental results show that the reconstituted bamboo beam is strengthened by the first method. The ultimate bearing capacity of the composite beam is increased by 14.0 than that before reinforcement, and when the deflection reaches the limit state of its normal use, the bearing capacity of the reconstituted bamboo beam before reinforcement is increased by 6.5 and the second reinforcement method is compared with the first one. The ultimate flexural bearing capacity has not been improved, but has decreased, but when the deflection reaches the limit state of its normal use, the bearing capacity is increased by 19.6g when the deflection reaches its normal limit state. The flexural bearing capacity and deformation performance of reconstituted bamboo beams are obviously improved compared with those before reinforcement.
【作者单位】：扬州工业职业技术学院;
【基金】：2016年江苏省建筑产业现代化示范基地项目扬州市建设科技计划项目(201606)
【分类号】：TU366.1

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