Flange for wind pipe connection construction method

The invention relates to the technical field of wind pipe connection construction, in particular to a flange for wind pipe connection and a construction method. The flange for wind pipe connection comprises flange bodies. Each flange body is formed by combining an aluminum alloy flange plate and a PVC plate. Dovetailed clamping plates are clamped onto V-shaped sliding blocks in a sliding mode. Thetwo flange bodies are connected together through I-shaped plug bars. The I-shaped plug bars are plugged at the opening ends of C-shaped components. The cross section of each I-shaped plug bar is of an inwards shrunk arc-shaped structure. The construction method comprises the following steps of construction preparation, laying-off and cutting, glue brushing and splicing, flange cutting and assembling, installation of the flange bodies, installation of the I-shaped plug bars, sealing of the four corners of the flange and installation of angled beads. Through the method, the problems of cold-bridge of a composite wind p