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首页 > 过刊浏览>2024年第27卷第8期 >757-763. DOI:10.3969/j.issn.1007-9629.2024.08.011
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极端湿热环境对CFRP/钢界面性能的影响
作者:
作者单位:

1.长沙理工大学 土木工程学院,湖南 长沙 410076;2.广西大学 土木建筑工程学院,广西 南宁 530004

作者简介:

李传习（1963—），男，湖南衡阳人，长沙理工大学教授，博士生导师，博士. E-mail： lichuanxi2@163.com

中图分类号:

TU599;TU391

基金项目:

国家自然科学基金资助项目（51778069）；湖南省自然科学基金资助项目（2021JJ40173）；湖南省研究生科研创新重点项目（QL20210180）


Influence of Eextreme Wet-Heat Environment on Adhesive Bonding Performance of CFRP/steel Interfaces
Author:
Affiliation:

1.School of Civil Engineering， Changsha University of Science and Technoloy，Changsha 410076， China;2.School of Civil Engineering and Archtecture， Guangxi University， Nanning 530004， China

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    摘要:

    为掌握极端湿热环境下CFRP/钢界面性能的退化机理，用Sika-30胶黏剂制作了12个CFRP/钢双搭接试件，并在70 ℃的模拟海水中浸泡不同时间后进行拉伸剪切试验. 结果表明：CFRP/钢双搭接试件的破坏模式受浸泡时长的影响较小；CFRP/钢界面平均抗剪强度随浸泡时长呈先上升后下降趋势；浸泡90 d后，CFRP/钢界面平均抗剪强度较未浸泡试件下降了35.6%.

    Abstract:

    To understand the deterioration mechanism of CFRP/steel interface properties under extreme hot and humid environment， 12 of CFRP/steel double lap specimens using Sika-30 adhesive were prepared. These specimens were immersed in simulated seawater at 70 ℃ for different time for tensile shear test. The results show that the failure mode of these specimens were less affected by the soaking time. The average shear strength of the CFRP/steel interfaces increased first and then decreased with the soaking time. After soaking for 90 days， the average shear strength of the CFRP/steel interfaces decreased by 35.6% compared with that of unsoaked specimen.

    表 4 CFRP/钢界面极限承载能力理论计算结果Table 4 Theoretical calculation results of ultimate bearing capacity of CFRP/ steel interface
    表 2 水浴试验的试件参数与试验结果Table 2 Sample parameters and test results of water bath test
    图1 CFRP/钢双搭接试件尺寸及应变片布置Fig.1 Size of CFRP/steel double lap specimen and layout of strain gauges（size： mm）
    图2 CFRP/钢界面破坏模式Fig.2 Failure modes of CFRP/steel interface
    图3 加载过程中CFRP/钢双搭接试件荷载位移曲线Fig.3 Load-displacement curves for CFRP/steel double lap specimens during loading
    图4 加载过程中CFRP/钢黏结界面剪应力分布Fig.4 Shear stress distribution of CFRP/steel bonding interfaces during loading
    图5 CFRP/钢界面剪应力-滑移本构曲线Fig.5 Bond-slip constitutive curves for interfaces between CFRP and steel
    表 1 钢板、CFRP板和Sika-30的尺寸和力学指标Table 1 Size and main mechanical indexes of steel plate， CFRP plate and Sika-30
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引用本文

李传习,司睹英胡,高有为.极端湿热环境对CFRP/钢界面性能的影响[J].建筑材料学报,2024,27(8):757-763

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  • 收稿日期:2023-10-09
  • 最后修改日期:2024-01-04
  • 在线发布日期: 2024-09-03
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