Cable-stayed bridge is a kind of large-span bridge structure, which mainly consists of bridge tower (including foundation), stay cable, bridge deck stiffening beam and other structural parts. Oblique cable is an important component of cable-stayed bridge, the use of higher strength levels to withstand the load of steel wire and strand bearing load transfer, bridge load is mainly transmitted to the tower through the cable stay. If cable-stayed cable is unqualified, damaged or failure in use, it will directly affect the safe service life of stay cable and bridge.

Commonly used in the cable structure are two kinds, one is hot-extruded high-density polyethylene (HDPE) protection can withstand high-strength load of hot-dip galvanized steel wire cable with epoxy cold heading system, said For the high-strength steel wire cable (also known as cold-cast anchor cable), the cable structure generally ** こ ****, transported to the site erection installation. The other is composed of strands of steel stranded wire, composed of cable at both ends of the parallel strands anchored with group anchors, high-density polyethylene jacket protection tube, known as the strand cable (also known as group anchors Cable-stayed cable), the cable-stayed cable structure is generally direct erection of steel stranded site, the use of clip anchor anchor cable composition. 20 years ago, high-strength steel wire cable manufacturing technology introduced from abroad, the domestic factory began manufacturing high-strength steel wire cable. The domestic high-quality high-strength steel wire and strand processing applications, cable-stayed bridge cable technology has laid a solid foundation for domestic high-strength steel wire cable technology quickly into the world.