Based upon a series simulation experiments the relationships between bolt consistency and properties of anchorage body are analyzed, through optimization of bolt consistency economical method is proposed for bolt consistency calculation as well as its application scope.

Then the calculating formula of bond strength has been established based on the test and i.

Study on the anchorage length of FRP bars with bond-slip constitutive relationship;

Analysis of the reliability and anchorage length for anchoring of steels;

Research on the steel plate anchorage length of plated R.C beams;

This article analyzes different "anchoring lengths of steel anchor bolts"chosen from "Design Handbook",according to the calculation principles of "The Design Specifications"in effect through engineering example,presents concrete suggestions,and can be used for reference in design.

A corresponding calculating formula on the ultimate anchoring strength of this material and a suggested table in construction of anchoring length are put forward.

Then the design of anchoring length by reliability analysis is proposed.