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首页> 外文期刊>Journal of structural engineering >Load-Carrying Capacity of Corroded Gusset Plate Connection and Its Repair Using CFRP Sheets
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Load-Carrying Capacity of Corroded Gusset Plate Connection and Its Repair Using CFRP Sheets

机译：腐蚀角撑板连接的承载能力及其使用CFRP板材的修复

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摘要

Recently, several events involving the corrosion-induced damage of gusset plate connections of steel truss bridges have been reported worldwide. In this study, the remaining load-carrying capacity of a corroded gusset plate connection was evaluated through loading tests and finite element method (FEM) analyses using a model approximately 50% of the size of an actual gusset plate connection. Two potential forms of corrosion, that is, weld and cross-sectional corrosion, on the gusset plate were considered in order to investigate the reduction in the load-carrying capacity. Then, parametric FEM analyses were conducted to determine the effect of the corrosion level on the remaining load-carrying capacity of a specimen model and a full-scale model of an actual connection. The loading tests and parametric FEM analyses indicated that with increases in the dimensions of the corroded sections, the load-carrying capacity of the gusset plate connections exhibited nearly similar linear decreases. Furthermore, the effectiveness of a repair method for the corroded gusset plate connection using carbon fiber-reinforced plastic (CFRP) sheets was investigated. The loading tests were conducted considering the area, direction, and location of the bonded CFRP sheets. As a result, this study proposed an appropriate repair method using CFRP sheets that could help recover the load-carrying capacity and improve the deformation performance of corroded gusset plate connections. (C) 2021 American Society of Civil Engineers.
机译：最近，全球已经报道了涉及腐蚀诱导的钢桁架桥梁腐蚀损伤的几个事件。在该研究中，通过装载测试和有限元方法（FEM）分析使用大约50％的实际角撑板连接的模型来评估腐蚀的角撑板连接的剩余负载承载能力。考虑了两个潜在的腐蚀形式，即焊盘板上的焊接和横截面腐蚀，以研究承载能力的降低。然后，进行参数化有限元分析以确定腐蚀水平对样本模型的剩余负载承载力的影响和实际连接的全规模模型。装载测试和参数化有限元分析表明，随着腐蚀部分的尺寸的增加，角撑板连接的承载能力表现出几乎相似的线性减小。此外，研究了使用碳纤维增强塑料（CFRP）片材的腐蚀角撑板连接的修复方法的有效性。考虑到粘合的CFRP片材的区域，方向和位置进行负载测试。结果，该研究提出了一种使用CFRP板的适当修复方法，该方法可以帮助恢复承载能力并提高腐蚀角撑板连接的变形性能。 （c）2021年美国土木工程师协会。

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  • 来源
    《Journal of structural engineering》 |2021年第6期|04021068.1-04021068.18|共18页
  • 作者

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

  • 作者单位

    Univ Danang Univ Sci & Technol Fac Civil Engn 54 Nguyen Luong Bang St Danang City 550000 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;

    Nagano Coll Natl Inst Technol Nagano 3818550 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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