High intensity ribbed screw-thread steel anchor rod

The utility model provides a high-intensity screw thread steel anchor rod with ribs, which relates to the field of an anchor fixing pull rod of civil engineering. At present, big-stress fixing anchor rods with ribs for engineering depend on importation. The utility model discloses a big-stress fixing anchor rod with ribs, a rob body is formed by connecting a plurality of high-intensity screw thread steel bars by a connecting sleeve barrel, a centring bracket is sheathed outside each screw thread steel bar, the head of the anchor rod is provided with a drill type joint, and the tail of the anchor rod is orderly connected with a wedge-shaped backing plate, a thin nut and a thick nut by a screw thread structure; the assembled anchor rod is carried out integral heat treatment, and the yield strength of the anchor rod is as high as 835 MPa by measurement. The utility model has the advantages of accurate positioning after pulp injection twice, high intensity of the anchor rod, low arrangement density, little steel using level, small construction drilling holes, convenient centration, quick construction and short construction period.