Novel composite string truss back anchor tensioning node

The utility model discloses a novel composite string truss back anchor tensioning node. The novel composite string truss back anchor tensioning node comprises a wrapping plate and a back anchor plate. The wrapping plate is cylindrical, a support is fixed in the wrapping plate, and a head sealing plate and a tail sealing plate are fixed to openings in the two ends of the wrapping plate respectively. The back anchor plate is arranged on the outer side of the tail sealing plate; a plurality of through holes are formed in the head sealing plate, the tail sealing plate and the back anchor plate; the through holes in the tail sealing plate correspond to the through holes in the back anchor plate. According to the utility model, the back anchor tensioning node is adopted on the end part support of the composite string truss, the small-angle connection of the upper chord member, the lower chord member, the prestressed cable and the like of the truss is realized, the prestressed cable penetrates through the interior o