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Study on mechanical behaviors of FRP-to-steel adhesively-bonded joint under tensile loading

机译：FRP-钢粘结节点在拉伸载荷下的力学行为研究

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摘要

Due to various advantages of Fiber-Reinforced Polymer (FRP) decks, the FRP to steel composite girder system is being increasingly used in new bridge constructions as well as rehabilitation projects for old bridges. This paper focuses on the mechanical behavior and failure mode of the adhesively-bonded joins between FRP sandwich decks and steel girders. The adhesively-bonded joints were experimentally investigated under tensile loading. The average ultimate failure load of surface pretreated specimens was 17.62 kN, which was 9.83% higher than that of un-pretreated specimens. Further comparison on failure modes confirmed that the surface pretreatment can improve the bonding quality between FRP composites and adhesive layer, and the failure load of the adhesive joint closely related to the FRP delamination area. Furthermore, a 3D numerical modeling was conducted using ABAQUS 6.8. The Finite Element Analysis (FEA) results were validated with experimental works focused on the deformational response of the adhesively bonded joints. The results of FEA highlight the three-dimensional nature of the stress distribution and stress concentrations at the interface between FRP sandwich deck and adhesive layer.
机译：由于纤维增强聚合物（FRP）甲板的各种优点，FRP到钢复合梁系统正越来越多地用于新的桥梁建设以及旧桥梁的修复项目中。本文重点研究FRP夹心板和钢梁之间的粘结连接的力学行为和破坏模式。在拉伸载荷下对粘合接头进行了实验研究。表面预处理试样的平均极限破坏载荷为17.62 kN，比未经预处理的试样高9.83％。对破坏模式的进一步比较证实，表面预处理可以改善FRP复合材料与粘合剂层之间的粘结质量，并且粘合剂接头的破坏载荷与FRP分层面积密切相关。此外，使用ABAQUS 6.8进行了3D数值建模。有限元分析（FEA）的结果已通过针对胶粘接头变形响应的实验工作进行了验证。有限元分析的结果突出了FRP夹心板和粘结层之间界面处应力分布和应力集中的三维性质。

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  • 来源
    《Composite Structures》 |2013年第4期|192-201|共10页
  • 作者

    X. Jiang; M.H. Kolstein; F.S.K. Bijlaard;

  • 作者单位

    Steel and Composite Structure, Section of Structure and Building Engineering, Department of Design and Construction, Faculty of Civil Engineering and Geosciences, Delft University of Technology, Delft, The Netherlands;

    Steel and Composite Structure, Section of Structure and Building Engineering, Department of Design and Construction, Faculty of Civil Engineering and Geosciences, Delft University of Technology, Delft, The Netherlands;

    Steel and Composite Structure, Section of Structure and Building Engineering, Department of Design and Construction, Faculty of Civil Engineering and Geosciences, Delft University of Technology, Delft, The Netherlands;

  • 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

    adhesively-bonded joint; FRP sandwich deck; mechanical behavior; experiment; FEA;

    机译：胶接接头;玻璃钢三明治甲板;机械性能实验;有限元分析;

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