Prestressed pin key connection structure of prefabricated wallboard and masonry wall

The invention discloses a pre-stress pin key connection structure of a prefabricated wallboard and a masonry wall, and belongs to the technical field of existing wall reinforcement, the prefabricated wallboard is mounted on the masonry wall and fixedly connected with the masonry wall through a pre-stress pin key, the pre-stress pin key comprises a pre-stress steel strand and an anchor disc, the masonry wall is provided with an anchoring hole, and the anchoring hole is connected with the pre-stress steel strand. And the prestressed steel strand penetrates through the anchoring hole and is fixed through the anchoring discs at the two ends, prestress is applied to the prestressed steel strand, then grouting holes are formed, and grouting materials are injected into the anchoring holes, so that construction of the prestressed pin key is completed. The prestressed pin keys are adopted, high installation precision is not needed, field installation is easy, it can be guaranteed that an original masonry wall and a pr