The shear stress transfer of prestressed anchor is the key for anchor performance and engineering design. The interface bonding strength between soil and induration has a very important role in supporting capacity of the soil anchor. It is presumed that the deformation between the soil layer rod and induration is compatible after the sliding section. Based on the Mindlin solution of a force act on the interior of a semi-infinite solid, a theory solution for the shear load of anchorage section is solved by considering the part of slip characteristics of interface in the loading process. On this basis, the shear stress of anchorage section is tested from anchor pullout test on site. Contrasted with the tests result, it is proved that the theoretical analysis is consistent with the tests. Theoretically, the research of shear stress transfer will enrich and develop anchor cable theory.

As an effective rock-soil anchoring technology, tension-type prestressed anchor is widely used in retaining foundation pits and slope for civil engineering because of its fewer perturbation, easier construction, more safety and more stability. The load transfer of anchorage section is the key to the civil engineering design and performance controls of the anchor. Several theoretic models for load transfer mechanism are compared and their insufficiencies are pointed out from the view point of civil engineering application.