Bridge large-diameter precast concrete tubular column foundation and construction method thereof

The invention belongs to the technical field of bridge foundation construction, and particularly relates to a bridge large-diameter prefabricated concrete tubular column foundation and a construction method thereof. The upper end of the tubular column body is fixedly connected with a connecting section, a pier column and a cover beam in sequence; the pipe column body is formed by splicing a group of pipe joints end to end; a water guide hole is formed in the side surface of the pipe joint; a blocking groove is formed in the outer side of the water guide hole; a blocking piece is rotationally connected into the blocking groove; a net plate is fixedly connected to the interior of the water guide hole; and a connecting piece is fixedly connected between the screen plate and the plugging sheet. External water enters the pipe joint through the blocking groove and the water guide hole to supplement water to the interior of the pipe column body, the dredging efficiency of dredging equipment is improved, the water an