Fan-shaped segment structure and method for realizing continuous casting, solidification and tail end composite pressing of super-thick plate

The invention discloses a fan-shaped segment structure and a method for realizing continuous casting, solidification and tail end composite pressing of a super-thick plate. An inner arc roller, an outer arc roller, an upper framework, a lower framework, a side framework I and a side framework II have sufficient strength and rigidity; four sensors and four oil cylinder assemblies are arranged in the components; the extension or retraction strokes of a first oil cylinder assembly, a second oil cylinder assembly, a third oil cylinder assembly and a fourth oil cylinder assembly are controlled by detecting a first displacement sensor, a second displacement sensor, a third displacement sensor and a fourth displacement sensor, so that the opening degree between the inner arc roller and the outer arc roller of a fan-shaped segment is controlled. The conventional pressing amount and a large compressing amount are implemented according to the solid fractions of different casting blanks, so that continuous casting, solidification and tail end composite pressing of the super-thick plate are realized.