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Behavior of glulam timber beam strengthened with carbon fiber reinforced polymer strip for flexural loading
Journal of Reinforced Plastics and Composites ( IF 3.1 ) Pub Date : 2021-04-09 , DOI: 10.1177/0731684421997924
Ümmü K İşleyen 1 , Rahim Ghoroubi 2 , Ömer Mercimek 3 , Özgür Anil 4 , Recep Tuğrul Erdem 5
Affiliation  

In the last 20 years, the use of wooden structures and their dimensions have gradually increased. The wood application has increased in different structures such as multistory buildings, sports, industrial facilities, road and railway bridges, power transmission lines, and towers. The widespread use and size of wood structures have increased the research on developing special types of wood products supported by composite materials. Laminated wood elements are the leading composite wood materials. Laminated wooden beams allow making much larger openings than standard solid wood structural elements. The development of the sizes and usage areas of wooden structures has increased the capacity of glulam structural elements and reveals the need to improve their performance. Carbon fiber reinforced polymers (CFRPs) are the most suitable options for increasing the bearing capacity values of glulam beams and improving general load–displacement behaviors. In this study, the use of CFRP strips in different layouts to increase glulam wooden beams and the application of CFRP fan-type anchors in the CFRP strip endpoints are the studied variables. Anchored and non-anchored glulam wooden beams reinforced with CFRP strips with different layouts were tested using a three-point bending test. The ultimate load capacity, initial stiffness, displacement ductility ratio, energy dissipation capacity, failure mechanisms, and general load–displacement behavior of wooden beam test specimens were obtained and interpreted as a result of the experiments.



中文翻译:

碳纤维增强聚合物条增强胶合木梁的抗弯性能

在过去的20年中,木制结构的使用及其尺寸逐渐增加。在多层建筑,体育,工业设施,公路和铁路桥梁,输电线路和塔架等不同结构中,木材的使用有所增加。木结构的广泛使用和尺寸增加了对开发以复合材料为支撑的特殊类型木制品的研究。层压木元素是领先的复合木材料。层压木横梁允许开孔比标准的实木结构元件大得多。木制结构的尺寸和使用区域的发展增加了胶合木结构元件的能力,并表明需要提高其性能。碳纤维增强聚合物(CFRP)是增加胶合木梁承载力值和改善一般荷载-位移性能的最合适的选择。在这项研究中,在不同的布局中使用CFRP板条来增加胶合木梁,以及在CFRP板条端点中CFRP扇形锚的应用是研究变量。使用三点弯曲试验测试了用不同布局的CFRP筋加固的锚固和非锚固胶合木梁。实验获得了木梁试样的极限载荷能力,初始刚度,位移延性比,能量耗散能力,破坏机理和一般载荷-位移行为,并作为实验的结果进行了解释。

更新日期:2021-04-09
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