Floor-type slant-legged steel truss bracket of lower transverse beam of large-span cable tower

The invention discloses a floor-type slant-legged steel truss bracket of a lower transverse beam of a large-span cable tower. The steel truss bracket is mounted on bottom bearing platforms of tower columns on two sides of the lower transverse beam of the cable tower. The steel truss bracket is characterized by comprising a steel truss, slant-legged brackets in bilateral symmetry arrangement, and an anti-introversion lateral bracing connected with the slant-legged brackets on the two sides, wherein the bottom of each slant-legged bracket is propped against the bottom bearing platform of the tower column on the corresponding side; the steel truss is supported at the tops of the slant-legged brackets. The feasible floor-type slant-legged steel truss bracket of the lower transverse beam of the large-span cable tower, provided by the invention, aims to solve the problems existing in a conventional construction technology of a lower transverse beam. The bracket directly utilizes conventional tower columns and conventional bearing platforms as a base, and omits the investment of facilities, such as temporary buttresses in the lower transverse beam span, and the bracket has the advantages of being large in bearing capacity, small in overall deformation, stable in structure, convenient to mount and demount, and sufficient in performance application of rods.