Fully grouted rock bolts are widely used in mining and civil engineering. In this study

numerical simulation was adopted to study the loading transfer performance of fully grouted rock bolts. First

based on the shear failure behaviour of the interface between the bolt and grout

a bond-slip model considering the residual shear strength was developed. Then

it was incorporated into the structural elements of piles. After that

the experimental pulling tests of rock bolts were carried out to validate the accuracy of this bond-slip model and the corresponding numerical modelling results. Finally

the influence of the residual shear strength

the shear stiffness coefficient and the grouted length on the bolting performance was studied through the validated numerical model. The results showed that the interfacial residual shear strength had a significant effect on the maximum and residual bearing capacity of rock bolts

which cannot be neglected in the test. With the increasing of interfacial shear stiffness coefficient

the maximum bearing capacity of bolts remarkably increased

and meanwhile there is no observable effect on the residual bearing capacity of bolts.