复合材料科学与工程 ›› 2025, Vol. 0 ›› Issue (6): 109-117.DOI: 10.19936/j.cnki.2096-8000.20250628.015

• 工程应用 • 上一篇    下一篇

海洋环境下CFRP布加固混凝土圆柱约束有效性系数分析

高婧1, 吴书航1, 周月明2   

  1. 1.厦门大学 建筑与土木工程学院,厦门 361005;
    2.上海隧道工程有限公司,上海 200000
  • 收稿日期:2024-03-12 出版日期:2025-06-28 发布日期:2025-07-24
  • 通讯作者: 吴书航(2000—),男,硕士生,主要研究方向为CFRP在结构工程中的应用。周月明(1997—),男,硕士生,主要研究方向为CFRP在结构工程中的应用。
  • 作者简介:高婧(1979—),女,博士,教授,博士生导师,主要研究方向为组合结构桥梁计算理论、结构健康监测与CFRP在结构工程中的应用。
  • 基金资助:
    国家自然科学基金联合基金项目(U2005216);福建省自然科学基金项目(2020J01010)

Analysis of confinement effectiveness coefficient of CFRP-confined concrete columns in marine environment

GAO Jing1, WU Shuhang1, ZHOU Yueming2   

  1. 1. School of Architecture and Civil Engineering, Xiamen University, Xiamen 361005, China;
    2. Shanghai Tunnel Engineering Co., Ltd., Shanghai 200000, China
  • Received:2024-03-12 Online:2025-06-28 Published:2025-07-24

摘要: 为研究海洋环境下CFRP布加固混凝土圆柱构件的约束有效性系数,设置正常环境与海洋环境2种工况,进行了5组共27个混凝土圆柱试件轴压试验,对比分析各组试件的破坏形态、轴向变形、极限破坏荷载值,并计算出了海洋环境下CFRP布约束混凝土圆柱理论模型的约束有效性系数。结果表明:海洋环境下,CFRP布与混凝土圆柱的黏结作用得到增强,改变了混凝土圆柱构件的破坏形态;CFRP布加固的层数对混凝土圆柱极限承载力的显著提升并不受海水腐蚀条件影响,海洋环境下的约束有效性系数对该理论模型仍然适用。

关键词: CFRP布, 混凝土圆柱, 海洋环境, 轴压性能, 破坏形态, 约束有效性系数

Abstract: In order to investigate the effect coefficient of CFRP-confined concrete columns in marine environment, five groups of 27 specimens were subjected to axial compression tests in both normal and marine environments. The failure mode, axial deformation, and ultimate failure load of each group were compared and analyzed, and validity coefficient of the CFRP-confined concrete columns theoretical model in the marine environment was calculated. The results showed that in the marine environment, the bonding effect between the CFRP sheet and concrete column is enhanced, leading to a change in the failure mode of the concrete column. Importantly, the substantial enhancement in the ultimate bearing capacity of concrete columns achieved by increasing the number of CFRP sheets remains unaffected by seawater corrosion conditions. Furthermore, the effectiveness coefficient of the constraint in the marine environment remains applicable to the theoretical model.

Key words: CFRP sheets, concrete columns, marine environment, axial compression performance, destruction form, confinement effectiveness coefficient

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