Article [28] (2007) reported a pull-out failure model experiment on the failure mechanism of fully bonded glass reinforced polymer anchor rods. Research has pointed out that under conditions of high mortar strength, anchor rod tensile failure or shear failure may occur; When the axial tensile stress reaches the tensile strength of the anchor rod first, tensile failure will occur in the free section; When the maximum Shear stress first reaches the shear strength of the filament, shear failure occurs first in the anchorage section. See Figure 15 for typical distribution curve of Shear stress on the surface of the anchor section bar measured in the test