复合材料科学与工程 ›› 2025, Vol. 0 ›› Issue (12): 123-130.DOI: 10.19936/j.cnki.2096-8000.20251228.016

• 工程应用 • 上一篇    下一篇

不同力学特性胶对胶栓混接GFRP梁柱节点的抗震性能的影响

刘洛含1, 肖潇1*, 张志恒2   

  1. 1.南华大学 土木工程学院,衡阳 421001;
    2.南华大学 结构实验室,衡阳 421001
  • 收稿日期:2024-11-18 出版日期:2026-02-06 发布日期:2026-02-06
  • 通讯作者: 肖潇(1968—),男,博士,副教授,主要从事复合材料结构性能方面的研究,brightxiao@163.com。
  • 作者简介:刘洛含(1998—),男,硕士研究生,主要从事复合材料结构性能方面的研究。
  • 基金资助:
    湖南省自然科学基金项目(2021JJ50015);湖南省教育厅科学研究重点项目(20A426)

The influence of adhesives with different mechanical properties on the seismic performance of GFRP beam column joints with adhesive bolted joints

LIU Luohan1, XIAO Xiao1*, ZHANG Zhiheng2   

  1. 1. School of Civil Engineering, University of South China, Hengyang 421001, China;
    2. School of Civil Engineering, University of South China, Hengyang 421001, China
  • Received:2024-11-18 Online:2026-02-06 Published:2026-02-06

摘要: 针对套筒连接的GFRP梁柱节点在循环荷载下容易发生梁撕裂和耗能不足的问题,基于试验结果研究节点的破坏模式以及抗震性能,分析并且比较是否加入胶黏剂以及加入不同力学性能的胶黏剂后节点抗震性能提升效果。在套筒连接的基础上,加入不同力学性能的胶黏剂,制作了无胶、柔性胶、刚性胶、组合胶4组GFRP梁柱节点并进行低周反复加载试验,研究强度不同的胶对节点抗震性能的影响。结果表明:相较于无胶,加入柔性胶后,节点耗能大约提升了97.19%;加入刚性胶后,节点耗能大约提升了298.86%。柔性胶相较于刚性胶容易撕裂,胶撕裂后导致节点表现接近无胶组。刚性胶和组合胶结果相近,说明在套筒侧面涂抹不同力学性能胶黏剂的作用差异不大。刚性胶组没有撕裂现象,破坏模式为套筒屈曲断裂,梁柱完好无损。建议在套筒连接模式下加入刚性胶,以提高节点的抗震性能。

关键词: GFRP梁柱节点, 胶栓连接, 滞回曲线, 耗能

Abstract: In response to the issue of beam failure and insufficient energy dissipation in GFRP beam column joints with sleeve connections under cyclic loading, the failure mode and seismic performance of the joints were studied based on experimental study. The improvement of seismic performance of the joints after adding or not add adhesives and influence of different kind of adhesives was analyzed and compared. On the basis of sleeve connection, this paper provides four groups of GFRP beam column joints: non-adhesive, flexible adhesive, rigid adhesive, and mix adhesive, and conducted low cycle repeated loading tests to study the influence of adhesives with different strengths on the seismic performance of the joints. The results showed that the addition of flexible adhesive increased the energy consumption of joints by approximately 97.19%, compared to non-adhesive. While the addition of rigid adhesive increased the energy consumption of joints by approximately 298.86%. Flexible adhesive is more prone to cracking compared to rigid adhesive, and after the adhesive is failed, the joint performance to approach that of a non-adhesive group. The results of rigid adhesive and mix adhesive are similar, indicated that the effect of adhesives with different characteristics on the side of the sleeve is not significantly different. There is no cracks in the rigid adhesive group, and the failure mode is sleeve buckling, with the beam and column intact. It is recommended to add rigid adhesive in the sleeve connection to improve the seismic performance of the joints.

Key words: GFRP beam column joints, bult-bonded connections, hysteresis curve, energy consumption

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