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Experimental analysis of different anchorage solutions for laminated carbon fiber-reinforced polymers adhesively bonded to timber

机译：层压碳纤维增强聚合物不同锚固溶液的实验分析粘合到木材

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摘要

The Externally Bonded Reinforcement (EBR) of timber structures with Carbon Fiber Reinforced Polymers (CFRP) is a solution that has been increasing. Like CFRP strengthened concrete structures, it is known that the premature debonding of the CFRP also occurs on timber structures. To study other alternative solutions to the EBR technique, the Near Surface Mounted (NSM) and six other situations with an additional anchorage were considered. A total of 33 single-lap shear tests were carried out. The experimentally obtained load-slip responses, the strains developed in the CFRP strips or the local bond-slip relationships are all reported and discussed. Compared to the EBR technique, the efficiency of each anchorage system and/or bonding technique is also analysed. The current preliminary results suggest that using two superposed metallic L-shape profiles or embedding the CFRP strip into the timber substrate are the best anchorage systems for the reinforcement of a timber structure with CFRP strips. The NSM technique has also led to high load capacities of the CFRP-to-timber interface.
机译：用碳纤维增强聚合物（CFRP）的木结构（CFRP）的外粘合增强（EBR）是一直在增加的溶液。与CFRP强化混凝土结构一样，已知CFRP的过早剥离也发生在木结构上。为了研究EBR技术的其他替代解决方案，考虑了近表面安装（NSM）和具有额外锚固的其他情况。共进行总共33个单圈剪切试验。通过实验获得的载荷滑响应，在CFRP条带中产生的菌株或局部粘合关系均讨论并讨论。与EBR技术相比，还分析了每个锚固系统和/或粘合技术的效率。目前的初步结果表明，使用两个叠加的金属L形型材或将CFRP条带入木材基板是用于加强木结构的最佳锚固系统，用于用CFRP条带加强木结构。 NSM技术还导致了CFRP-To-Timber接口的高负载能力。

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  • 来源
    《Composite Structures》 |2020年第7期|112228.1-112228.20|共20页
  • 作者

    Biscaia Hugo C.; Diogo Patricia;

  • 作者单位

    Univ Nova Lisboa Fac Ciencias & Tecnol UNIDEMI P-2829516 Caparica Portugal|Univ Nova Lisboa Fac Ciencias & Tecnol Dept Civil Engn P-2829516 Caparica Portugal;

    Univ Nova Lisboa Fac Ciencias & Tecnol Dept Civil Engn P-2829516 Caparica Portugal;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    CFRP; Timber; Anchorage systems; Bond-slip; Debonding; Interface;

    机译：CFRP;木材;锚固系统;粘合剂;剥夺;界面;

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