Mining anchor tensioning anchorage, 15.24 single-hole anchor 
 In the post-tensioned structure or component to keep the pull of the prestressing tendons and pass the permanent anchoring device to the concrete. Anchorage can be divided into two categories: (a) the tension side anchor: installed on the end of the prestressing tendons and can be tensioned anchorage; (b) fixed end anchorage: Installation in the prestressing tendons end, usually buried and not for the tensioning of the anchor into the concrete. Prestressing tendon anchorage criteria: the People's Republic of China national standard (GB / T 14370-2000) 
 Anchors applications 
 Roads and bridges, railway bridges, urban interchange, light rail, high-rise building, water conservancy and hydropower dams, harbors and docks, rock slope protection anchorage, foundation reinforcement, tunnel roof of the mine anchor the top of prestressed truss, metro, large office buildings and hotels. warehouse plant, tower construction, heavy promotion, the synovial intermittent propulsion, bridge and tunnel pushing large container ships, sleepers, replacement of bridge bearings, bridge and building reinforcement, steel work, anti-magnetic and corrosion engineering (fiber anchorage ), carbon fiber reinforcement, pre-tensioned beam field of construction, external prestressing works, cable-stayed, suspension, etc. 
 Currently widely used anchor specifications: (a) M15,-N-anchor. M stands for Anchorage (Anchorage Chinese pinyin first letter); 15 on behalf of the strand specification of the strand of 15.24, (China's general widespread use of strand strength of 1860MPa grade 15.24 strand);-N- refers to the wear contained strand root number. (B) of M13-N-anchor. M on behalf of the Anchorage (Anchorage Chinese pinyin first letter); 13 specifications representing the strand of the strand of 12.78 (foreign general widespread use of strand strength of 1860MPa grade 13.78 strand);-N- refers to the wear contained strand root number. 
 Common anchorage system: (1) cylinder conventional anchorage. The specification model is expressed as: M15,-N or of M13-N; this anchor has a good anchor and put self-anchored performance. The Tension general feedthrough jack (2) rectangular flat anchor. Specification model expressed as: BM15-N or BM13-N (B, flat anchor Hanyu Pinyin first letter, on behalf of the flat anchor means); flat type anchors for the bridge deck transverse prestressed hollow slab, low-height of Box beam, so that the stress distribution more uniform and reasonable, further thinning the thickness of the structure. (3) hold a wrap-style anchor. Specifications Type:-N M15P or M13P-N; limited circumstances applicable to the component side cloth design stress large or the end of the space, it uses the extruder will squeeze pressure knot in the strand on a grip wrapped in Anchorage, embedded in concrete and arranged according to their needs, the solidification of concrete design strength during tension.