Steel strand tensioning supporting leg structure and tensioning anchorage device

The utility model relates to the field of tensioning construction auxiliary tools, in particular to a steel strand tensioning supporting foot structure and a tensioning anchorage device, and the steel strand tensioning anchorage device comprises an annular plate, an arc-shaped supporting structure, an anchoring device, a jack and a fastening anchorage device. A through hole is formed in the middle of the annular plate, and a groove with the diameter larger than that of the through hole is formed in one side. One end of the arc-shaped supporting structure is arranged on the other side of the annular plate, the other end of the arc-shaped supporting structure is used for abutting against a concrete structure, a channel for a steel strand to penetrate through is reserved in the middle of the arc-shaped supporting structure, and an opening is reserved in the side face. The anchoring device is arranged in the channel and is used for anchoring the steel strand; the bottom of the jack is clamped on the groove of the