Development of mechanical test platform for anchorage system and test on interface stress

In order to study the distribution and transfer law of interface stress, the mechanical test platform for anchorage system was developed on the basis of the pressure test server, and double interface pull-out test of the anchorage was carried out in laboratory. Results show, the distribution of shear stress on the interface is uneven, transferred in the form of first increased and then decreased, and mainly concentrated in the one third of pulling-out scope. The shear stress distribution of two anchorage system interfaces is similar. The interface stress of anchorage matrix is the attenuation result of the bolt interface one. The attenuation of maximum shear stress reaches 40% ~ 60%. The stability of the experimental platform is good. It can be installed easily and the operation of it is simple. It is suitable for testing on mechanical problems of anchorage interface in laboratory.