Special-shaped fiberglass sleeve used for reinforcing steel pile foundation

The invention discloses a special-shaped fiberglass sleeve used for reinforcing a steel pile foundation. The special-shaped fiberglass sleeve comprises a lower main sleeve and an upper main sleeve; the side wall of the lower main sleeve and the side wall of the upper main sleeve are each provided with a mounting fixing mechanism in the axial direction; lower cross linkage notches are formed in thetop end of the lower main sleeve by corresponding to cross linkages of the steel pile foundation; a lower cross linkage sleeve is fixedly connected with each lower cross linkage notch on the outer side wall of the lower main sleeve; the outer periphery of the top end of the lower main sleeve is fixedly provided with a plurality of lock catches; upper cross linkage notches are formed in the bottomend of the upper main sleeve by corresponding to the lower cross linkage notches; and upper cross linkage sleeves are arranged on the outer side wall of the upper main sleeve by corresponding to thelower cross linkage sleeves