The study results show that: the shear of grout on FRP rods does not vary uniformly with the length of rod; the pull?out capacity of FRP rods depends not only on the bond stress but also on the mechanical interlocking force between the rod and grout; the pull?out capacity increases with the increasing of rods sur.

Elementary introduction of pull-out performance in inspection of pre-install fixture and whole post-install fixture;

The testing results analysis on anti-floating anchor pullout resistance;

Based on the theoretical distribution of frictional stress, the maximal pullout resistance formula of wholly grouted anchor is derived.

The main parameters that affect the pullout resistance of soil nail being regarded as random variables, JC-method is used to analyze the effect of their variance on the reliability of the resistance and its sensitivity to the parameters.

In recent years,the method of reinforcing basement by using small-bored anti-float roof bolt stump is widely adopted in Wuhan,but there are some roof bolt can reach the designed withdrawal resistance.

A relatively accurate formula of withdrawal resistance design value of soil anchor is obtained through analysis of the influncing factors of it so as to save anchorage materials and assure the safty of anchorage.

Test research on effects of welding temperature on bond-slip behavior and upright resistance of post-embedded bars

Combined with practical engineering,this paper introduces the application of soil anchor pile in foundation pit slope supporting,introduces the design process of anchor pile from selection of scheme,calculation of upright resistance,selection of upright resistant steel bar and checking calculation of stability,and proves the design s rationality by upright resistant test.