Special-shaped underwater section bridge pile foundation reinforcing structure and measurement construction method

The invention provides a special-shaped underwater section bridge pile foundation reinforcing structure and a measurement construction method, mainly aims to repair, reinforce and protect a bridge pile foundation impacted by a river, a steel casing covers the periphery of the bridge pile foundation, and the shape of the lower end of the steel casing is matched with the gradient and shape of a riverbed hard base at the base end of the bridge pile foundation. The steel casing is used as a permanent formwork, and self-compacting concrete is poured between the steel casing and the bridge pile foundation for reinforcement and protection. According to the technical scheme, the reinforcing structure can be matched with the slope and the shape of the hard riverbed base, complete protection of the bridge pile foundation is achieved, the construction method breaks through the limitation of an existing construction method for solving the problems that the river scouring strength is large and construction is difficult, a