Prestress assembly type U-shaped groove

The utility model provides a prestress assembly type U-shaped groove. Comprising a vertical plate, a bottom plate and a wedge-shaped bottom plate. Holes are formed in the two sides of the top of the vertical plate, and assembling is conducted according to the reserved hole positions in the bottom plate. Meanwhile, holes are formed in the front end and the rear end of the bottom plate, and splicing and prestress applying of the bottom plate can be achieved. A hole is formed in the top of the wedge-shaped bottom plate and aligned with an anchor hole reserved in the outermost side of the bottom plate, an anchor cable is used for connection, an anchorage device is used for anchoring, and finally the U-shaped groove is assembled. According to the U-shaped groove, the installation speed of the U-shaped groove can be increased, the construction efficiency can be improved, meanwhile, the wedge-shaped bottom plate can increase the resistance of two soil pressures of the U-shaped groove, the stability of the U-shaped g