1, anchorage refers to the permanent anchorage used in prestressed concrete, which is an anchorage tool in post-tensioned structures or components to maintain the tension of prestressed tendons and transfer it to the inside of concrete, also known as prestressed anchorage.

China widely used anchorage specifications are:

M 15-N Anchorage: M stands for Anchorage (the first letter of Chinese Pinyin in Anchorage); 15 stands for steel strand, with the specification of GB 15.20 mm (steel strand with strength of 1860 MPa is generally used in China); -N refers to the number of steel strands to be loaded.

M 13-N Anchorage: M stands for Anchorage (the first letter of Chinese Pinyin in Anchorage); 13 stands for steel strand with specification of 12.78 (steel strand with strength of 1860 MPa is generally used abroad); -N refers to the number of steel strands to be loaded.

2. Fixture refers to the device used to fix the processed object in the process of mechanical manufacturing, so that it can occupy the correct position for construction or inspection. It is also called fixture (m: j). In a broad sense, any process in the process can be called fixture, which is used to install the workpiece quickly, conveniently and safely.

Fixture usually consists of positioning element (to determine the correct position of the workpiece in the fixture), clamping device, tool alignment guide element (to determine the relative position between the tool and the workpiece or guide the direction of the tool), indexing device (including rotary indexing device and linear moving indexing device), connecting element and fixture body (fixture base).

Extended data:

Anchoring application field

Highway bridges, railway bridges, urban interchanges, urban light rail, high-rise buildings, water conservancy and hydropower dams, ports and docks, rock slope protection and anchorage, foundation reinforcement, tunnel roof anchorage, prestressed grids, subways, large buildings, halls and warehouses.

Tower construction, lifting of heavy objects, intermittent propulsion of synovium, jacking of bridge tunnels, replacement of large containers and ships, sleepers and bridge bearings, reinforcement of bridges and buildings, reinforcement engineering, anti-magnetic and anti-corrosion engineering (fiber anchoring), carbon fiber reinforcement, pretensioning beam yard construction, external prestressing engineering, stay cables, suspension cables, etc.

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