采用不同胶黏剂的GFRP胶螺混接接头的拉伸性能试验研究

doi:10.19936/j.cnki.2096-8000.20260128.004

摘要/Abstract

摘要： 为推动玻璃纤维增强复合材料在土木行业的应用,本文通过一种脆性胶黏剂与两种拉伸模量和拉伸强度不同的柔性胶黏剂胶螺混接接头的拉伸试验,探究了接头在不同搭接长度和胶层厚度下的连接性能。结果表明:三种胶中,高模量高强度的柔性胶接头承载力最高;随着搭接长度的增加,三种胶的混接接头承载力均提高;随着胶层厚度的增加,脆性胶接头承载力降低,低模量低强度柔性胶承载力提高,高模量高强度柔性胶在中间厚度为1.0 mm时承载力最佳;低模量低强度柔性胶在厚度为1.0 mm和1.5 mm时实现胶螺共同承载,而另两种胶无法实现共同承载,表现为承载过程中的分段脆性承载特征;三种胶的接头的破坏模式以GFRP板的剪切和劈裂破坏为主。本文研究可为后续工程实践提供一定指导参考。

关键词: 胶黏剂, 玻璃纤维增强复合材料, 胶螺混接接头, 拉伸性能, 试验研究

Abstract: To promote the application of glass fiber-reinforced polymer (GFRP) in the civil engineering industry, this study conducted tensile tests on bolted-bonded hybrid joints using a brittle adhesive and two flexible adhesives with different tensile modulus and strengths, exploring joint performance under varying overlap lengths and adhesive thicknesses. The results show that among the three adhesives, the flexible adhesive with high modulus and high strength exhibited the highest load-bearing capacity. With increasing overlap length, the load-bearing capacity of mixed joints for all three adhesives increased. As adhesive thickness increased, the capacity of brittle adhesive joints decreased, while that of low modulus, low strength flexible adhesive increased. The flexible adhesive with high modulus and high strength achieved the best load-bearing capacity at an intermediate thickness of 1.0 mm. The low modulus, low strength flexible adhesive enabled combined bolted-bonded load sharing at thicknesses of 1.0 mm and 1.5 mm, whereas the other two adhesives could not achieve such synergy, exhibiting segmented brittle load-bearing characteristics during the loading process. The failure modes of the joints for all three adhesives were predominantly shear and splitting failure of the GFRP plates. This study provides a reference for future engineering practice.

Key words: adhesives, GFRP, bonded-bolted hybrid joints, tensile performance, experimental study

中图分类号:

TB332

陈江, 肖潇, 刘明钒, 欧阳容海. 采用不同胶黏剂的GFRP胶螺混接接头的拉伸性能试验研究[J]. 复合材料科学与工程, 2026, 0(1): 24-32.

CHEN Jiang, XIAO Xiao, LIU Mingfan, OUYANG Ronghai. Experimental study on the tensile performance of GFRP bonded-bolted hybrid joints with different adhesives[J]. COMPOSITES SCIENCE AND ENGINEERING, 2026, 0(1): 24-32.

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