GRC keel structure and construction method thereof

The invention discloses a GRC keel structure and a construction method thereof. The GRC keel structure comprises a stand column, a cross beam and a ceiling keel; the ceiling keel is a vertical pull rod, is inserted in a substrate, and is fixedly connected with the substrate; the tail end, positioned below the substrate, of the pull rod is fixedly connected with the cross beam; the section of the cross beam is rectangular, and the external of the cross beam is wrapped with a GRC ceiling beam; the section of the ceiling beam takes the shape of a 3/4 circle, and a gap is towards the substrate; multiple horizontal first fixed plates are spaced on the inner side of the bottom of the ceiling beam in the length direction; and the first fixed plates are provided with screws fixed with the bottom surface of the cross beam. The GRC keel structure and the construction method thereof optimize and improve procedures, save the cost and the time, are high in efficiency, reduce the construction cost, can realize excellent vi