Ultra-large type acrylic polygonal spliced roof structure and forming process thereof

The invention relates to an ultra-large type acrylic polygonal spliced roof structure and a forming process thereof. The forming process comprises the steps that a, supporting rib plates are erected, wherein a steel pipe scaffold is adopted to support a plurality of acrylic rib plates; b, cutting small pieces of acrylic glass; c, supporting the small pieces of acrylic glass on an acrylic rib plate; d, wrapping an aluminum film on a downward seam which is not pressed and covered by the acrylic edge strip at the joint seam, and adhering and pressing by using an adhesive tape; e, a sprue gate is formed in the vertex position of the regular polygon structure on the outermost ring for material injection; f, exhausting; g, composite curing covering heat preservation is conducted at 28 +/-1 DEG C, and the curing time is 38 h; and h, finished product obtaining, wherein the acrylic edge strips and the aluminum film are removed, and polishing and flattening treatment is conducted. According to the process, the ultra-la