Deep-buried low-retraction anchorage device tensioning structure

• Main Authors: TAN YONG, LAI YANQIU, LIU JINPENG, LIU JIANBO, WANG PANCHENG, ZHANG WEISONG, ZHOU LONG, WANG KE, YU QIANG
• Format: Patent
• Language: Chinese; English
• Published: 13.10.2023
• Subjects: ASSEMBLY OF BRIDGES; CONSTRUCTION OF BRIDGES; CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES; FIXED CONSTRUCTIONS; OR VIADUCTS

The utility model discloses a tensioning structure of a deeply-buried low-retraction anchorage device. Comprising an anchoring structure, an anchor cup and a spiral reinforcing steel bar which are poured and fixed in concrete, and a plurality of steel strands, one end of each steel strand is fixedly connected with an anchor rod poured and fixed in the concrete, and the other end of each steel strand penetrates through the spiral reinforcing steel bar and the anchor cup to be connected with a primary tensioning structure; the primary tensioning structure is arranged in a groove in the surface of poured and prefabricated concrete, and comprises a deeply-buried pile casing, a low-retraction anchor ring and a low-retraction nut; the secondary tensioning structure is arranged on the outer side of a groove in the surface of the poured and prefabricated concrete and comprises a reverse-thread tensioning rod, a reverse-thread rear anchor nut, a forward-reverse-thread connecting nut and a jack; according to the utilit