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首页> 外文期刊>Journal of structural engineering >Repair Method and Finite Element Analysis for Corroded Gusset Plate Connections Bonded to CFRP Sheets
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Repair Method and Finite Element Analysis for Corroded Gusset Plate Connections Bonded to CFRP Sheets

机译：腐蚀角撑板连接与CFRP薄板的修复方法和有限元分析

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摘要

In steel truss bridges, severe damage due to corrosion at gusset plate connections has been widely reported. This study investigated the effectiveness of a repair method using carbon-fiber-reinforced plastic (CFRP) sheets for corroded gusset plate connections. Loading tests were conducted with a model approximately 50% of the size of actual gusset plate connections and a corrosion level of approximately 50% of the gusset plate thickness. Further, loading tests were carried out by varying the area, direction, and location of the bonded CFRP sheets. Results showed that the proposed repair method recovered the load-carrying capacity and improved the deformation performance of the corroded gusset plate connections. Three-dimensional finite element (FE) analyses, which considered the nonlinear properties of materials, anisotropic performance of CFRP sheets, and bond-slip model of the polyurea putty layer inserted between the corroded gusset plate and CFRP sheets, were implemented to validate the experimental results. By varying the bond-slip properties of the polyurea putty layer within the fluctuation range of measured data, this study accurately reproduced the experimental results and clarified the polyurea putty layer's influence on the load-carrying capacity, deformation performance, and failure behavior of the corroded gusset plate connections bonded to CFRP sheets. DOI: 10.1061/(ASCE)ST.1943-541X.0002862. (c) 2020 American Society of Civil Engineers.
机译：在钢桁架桥梁中，广泛报道了在角撑板连接时由于腐蚀而导致的严重损坏。本研究调查了使用用于腐蚀的角撑板连接的碳纤维增强塑料（CFRP）板的修复方法的有效性。用模型进行加载测试，该模型大约50％的实际角撑板连接的尺寸和大约50％的角腹板厚度的腐蚀水平。此外，通过改变粘合的CFRP片材的面积，方向和位置来进行加载测试。结果表明，建议的修复方法回收了承载能力，提高了腐蚀角撑板连接的变形性能。实施了三维有限元（Fe）分析，其考虑了材料的非线性性质，CFRP片材的各向异性性能，以及插入腐蚀的角撑板和CFRP片材之间的聚脲腻子层的粘合模型，以验证实验结果。通过改变测量数据的波动范围内聚脲腻子层的粘合性，这项研究精确地再现了实验结果，并阐明了聚脲腻子层对腐蚀的承载能力，变形性能和故障行为的影响结杆板连接粘合到CFRP板上。 DOI：10.1061 /（asce）st.1943-541x.0002862。 （c）2020年美国土木工程师协会。

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  • 来源
    《Journal of structural engineering》 |2021年第1期|04020310.1-04020310.22|共22页
  • 作者

    Ngoc Vinh Pham; Miyashita Takeshi; Ohgaki Kazuo; Hidekuma Yuya; Harada Takuya;

  • 作者单位

    Danang Univ Sci & Technol Fac Civil Engn 54 Nguyen Luong Bang St Danang City Vietnam|Nagaoka Univ Technol Dept Civil & Environm Engn 1603-1 Kamitomioka Nagaoka Niigata 9402188 Japan;

    Nagaoka Univ Technol Dept Civil & Environm Engn 1603-1 Kamitomioka Nagaoka Niigata 9402188 Japan;

    Inst Technologists Dept Bldg Technologists 333 Maeya Saitama 3610038 Japan;

    Nippon Steel Chem & Mat Co Chuo Ku 13-1 Nihonbashi 1 Chome Tokyo 1030027 Japan;

    Nippon Expressway Res Inst Co 1-4-1 Tadao Machida Tokyo 1948508 Japan;

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