Analysis of stress-strain in fully bonded basalt fiber plastic anchors

Based on the field pulling test of BFRP anchor, this study studied the stress-strain distribution of BFRP anchor solids of different lengths, analyzed the spatial and temporal distribution of stress-strain, shear stress distribution, axial force characteristics and shear slip displacement characteristics of the interface between BFRP anchor and slurry, and discussed the working mechanism of BFRP anchor solids of different lengths. The effect of bonding length of BFRP bolt on bonding properties between bolt and grout was quantified. The test results show that: The strain of BFRP bolt increases with the increase of load, and decreases with the increase of buried depth; The axial force increases with the increase of cyclic load and decreases with the increase of anchoring depth; The interfacial shear stress decreases exponentially along the anchoring depth, which can be divided into fast decay and slow decay stages; The bonding strength increases with the increase of bonding length, and the strength increases by 2 % to 27 % for every 0.5 m increase in length. This understanding of shear stress distribution helps in accurately assessing the load - transfer mechanism and the potential failure modes of the anchoring system, which is crucial for improving the design and safety of geotechnical anchoring projects.