Composite reinforced pier with trumpet-shaped straight-grain curved-surface column sleeved outside circular single-column pier and construction method of composite reinforced pier

Aiming at a circular single-column pier bridge, an original circular single-column pier is wrapped with a composite reinforcing pier of a horn-shaped straight-grain curved-surface column, the composite reinforcing pier is composed of space cylinder net-shaped main ribs, welding hoops and pier body concrete, and the space cylinder net-shaped main ribs are divided into two straight-line steel bar sets which are arranged in a spatial crossing mode; the plane projection of the grid is an internally circular and externally flat oval double-core oval closed polygonal star-shaped grid, a circular welding hoop is arranged at the waist part, and a flat oval welding hoop is arranged at the top part. According to the composite reinforced pier with the horn-shaped straight grain curved surface column,curve appearance is attractive, the small waist circular section is matched with an original circular single-column pier, the view field of a driver is wide, the top flat oval section is matched witha circular-end-shaped rei