Arch bridge buckle cable ground tensioning and anchoring system and method

The invention relates to an arch bridge cable ground tensioning and anchoring system and method, the system comprises a ground anchor, a tensioning and anchoring beam, a sliding assembly and a limiting assembly, the tensioning and anchoring beam is slidably connected with the ground anchor through the sliding assembly, the limiting assembly is connected with the ground anchor and the tensioning and anchoring beam, and the limiting assembly is used for limiting the maximum sliding position of the tensioning and anchoring beam. In the tensioning process, the counter-acting force of shearing force borne by the buckle cable forces the tensioning anchoring beam to slide along the sliding assembly, that is, the setting angle of the tensioning anchoring beam is finely adjusted in a self-adaptive mode along with the buckle cable, it is guaranteed that the buckle cable is perpendicular to the anchoring end and only bears axial force, and the limiting assembly limits the maximum sliding position of the tensioning ancho