| 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%. |
| 关键词: CFRP/钢 破坏模式 黏结滑移本构关系 抗剪强度 |
| DOI：10.3969/j.issn.1007-9629.2024.08.011 |
| 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） |
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| Influence of Eextreme Wet-Heat Environment on Adhesive Bonding Performance of CFRP/steel Interfaces |
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LI Chuanxi1,2, SIDU Yinghu1, GAO Youwei1
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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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| 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. |
| Key words: CFRP/steel failure mode bond-slip constitutive relation sheer strength |
