Prefabricated laminated slab post-pouring gap steel plate plugging mold and construction method thereof

A side plate and a top plate are fixedly connected to form a right-angle component, and the side plate is fixedly connected with a side wall at the bottom of the post-pouring seam; the top plate is attached to the bottom surface of a floor slab on the side edge of the post-pouring joint and is wider than the post-pouring joint; inclined struts are arranged between the top plate and the side plates; the construction method of the prefabricated laminated slab post-pouring gap steel plate blocking mold comprises the specific steps that (1) the side plates of the mold are attached to the side walls, and the bolt holes in the side plates correspond to reserved holes in the side walls; (2) the mold and the side wall are pre-fixed through bolts; 3) adjusting the horizontal position of the mold to make a mold top plate attached to the bottom surface of the floor and located at the bottom of the post-pouring seam, and completely fixing the mold; (4) grouting is conducted from the top gap of the prefabricated floor sla