Space unbonded prestressed ring beam

The utility model discloses a space unbonded prestressed ring beam, which solves the technical difficult problems of the structure of the conventional overhead prestressed ring beam and the prestressed operation in the construction of the space unbonded prestressed ring beam. The space unbonded prestressed ring beam comprises a horizontal ring beam (1) constructed in a space and an irregularly-shaped ring beam (2) constructed in the space and warped outward and upward; unbonded prestress steel stranded wires (3) are arranged in both the irregularly-shaped ring beam (2) and the horizontal ring beam (1); a spiral rib (4) is arranged between a fixed plate at one end of the horizontal ring beam (1) and a bearing plate at the other end of the horizontal ring beam (1); clips (9) are arranged at the periphery of the unbonded prestress steel stranded wires (3) on the outer side of the bearing plate and used for fixing the unbonded prestress steel stranded wires (3) after being stretched and drawn; and anchor rings (10) are arranged outside the clips (9). The space unbonded prestressed ring beam has the advantages of small cross sections of components, light dead weight, large rigidity, high crack resistance, and the like.