@article{HUANG2026, 
author = {Heqiang HUANG and Bo SHAN and Peicheng QIN and Tianyu LI and Zongfu ZHANG and Shangqi DAI},
title = {Experimental research on the bonding and anchorage performance of glued-in GFRP rod in glubam},
year = {2026},
journal = {Natural Science of Hainan University},
volume = {44},
number = {1},
pages = {76-86},
keywords = {glued-in rod, glass fiber reinforced polymer (GFRP), glubam, anchorage strength, bonding length-diameter ratio},
url = {https://www.sciopen.com/article/10.65658/j.hndk.2025041101},
doi = {10.65658/j.hndk.2025041101},
abstract = {Fiber reinforced polymer (FRP) rod is a reasonable alternative to steel rod used in glued-in rod engineered bamboo structures, mainly attributed to its significantly higher strength-to-weight ratio and excellent corrosion resistance. However, research in this field is limited. In this study, a total of 60 glued-laminated bamboo (glubam) specimens with glued-in single glass fiber reinforced polymer (GFRP) rod were subjected to axial pull-pull tension tests. The investigation focused on the effects of anchorage length, rod diameter, and bonding length-to-diameter ratio on the anchorage performance. Test results revealed that all specimens failed due to debonding at the glubam-adhesive interface. Approximately 27% of the specimens exhibited pure adhesive failure, while about 70% of specimens experienced a mixed failure mode involving both adhesive pull-out and shear failure in glubam, and 3% of specimens exhibited splitting failure of glubam. Furthermore, the bonding strength of the glued-in glubam joints is primarily governed by the anchorage length or abonding length-diameter ratio of glued-in GFRP rods, corresponding to a negative correlation between them. In contrast, the axial stiffness of the glued-in glubam joints increases with increasing of the diameter of the GFRP rod. Based on the single-parameter correlation analysis, a strength model and an axial stiffness model were proposed for predicting the mechanical performance of glubam joints with glued-in GFRP rod, which also demonstrated good agreement with the experimental data.}
}