Variable-angle shear test device for fiber reinforced composite material and concrete interface

The invention discloses a variable-angle shear test device for a fiber reinforced composite material and a concrete interface, and belongs to the technical field of building material test equipment, the variable-angle shear test device comprises a stress rod piece penetrating through a concrete test block, and the end part of the stress rod piece can be connected with a testing machine; fRP cloth strips are pasted on the two sides of the concrete test block, each FRP cloth strip comprises a bonding part and a free part, a certain included angle is formed between the free part and the bonding part of each FRP cloth strip, and the free parts of the FRP cloth strips on the two sides are oppositely arranged; the free end of the FRP cloth strip is connected with the testing machine at the other end through a clamping adjusting mechanism, and the clamping adjusting mechanism is used for clamping and adjusting the included angle between the free part of the FRP cloth strip and the concrete test block. The two testin