12.7mm 15.24mm PC Strand Cable Prestressed Anchor For Post Tensioning Concrete

Product Specification

12.7mm and 15.24mm PC Strand Cable Prestressed Anchor for Post Tesnioning Concrete Slab

Technical parameter of Bridge Tensioning Equipment Prestressed Anchor

1). Type: Single-hole, Multi-hole; Circular, Flat.

2). Parts: Anchor Ring/Plate, Wedge, Base Plate, etc.

3). Have a high anchor efficiency and very good performance.

4). We can manufacture all kinds of anchorage and prestressed equipment according to your requirement and drawings.

Introduction of Bridge Tensioning Equipment Prestressed Anchor

Anchorage refers to a permanent anchoring device used in prestressed concrete. It is an anchoring tool in a post-tensioned structure or component to maintain the tension of the prestressed tendon and transmit it to the interior of the concrete. It is also called a prestressed anchor. Tool.
Anchors can be divided into two categories according to the type of use:
(a): An anchoring tool that is installed at the end of the prestressing tendon and can always keep the prestressing tendon in an anchored state during the tensioning process of the prestressing tendon.
Tension end anchorages can also be divided into clip-type anchorages (YJM) for tensioning prestressed steel strands, steel tapered anchors (GZM) for tensioning high-strength steel wires, Pierhead anchors (DM) for tensioning high-strength steel wire after heading, nut (YGM) for tensioning finish-rolled rebar, cold-cast heading anchor (LMZ) for tensioning multi-strand parallel wire bundles, etc. Many types.
(b) Fixed-end anchorage: An anchorage installed at the end of the prestressed tendon, usually embedded in concrete and not used for tension, also known as squeeze anchor or P anchor.

Application fields of Post-tensioned Prestressed Anchor
Highway bridges, railway bridges, urban interchanges, urban light rails, high-rise buildings, water conservancy and hydropower dams, port terminals, rock mass slope protection anchoring, foundation reinforcement, tunnel mine roof anchor roof, prestressed grid, subway, large buildings, halls, Warehouse workshop, tower building, heavy lifting, sliding film intermittent propulsion, bridge, and tunnel jacking, large containers and ships, sleepers, replacement of bridge supports, bridge and building reinforcement, steel reinforcement works, anti-magnetic and anti-corrosion works (fiber anchors) ), carbon fiber reinforcement, pre-tensioned beam field construction, external prestressing engineering, stay cables, suspension cables, etc.

The attention to Pre-stressed steel strand anchorage tensioning 
The tensioning of the prestressed steel strand anchorage is carried out in three stages: pre-tensioning, initial tensioning, and intermediate tensioning. Please follow the steps below carefully:
1. The tensioning anchorage of the same bundle of steel strands must be carried out simultaneously at both ends, and the main oil steel of the jack is slowly filled with oil for tensioning, and the reading of the oil meter is the main factor, and the elongation value of the steel strand is checked. The difference between the actual elongation value and the theoretical elongation value is controlled within plus or minus 6%. The difference between the elongation of the steel strands at both ends should not be greater than 5%, and it is strictly forbidden to stretch one end. The steel bundles that are tensioned at one time are controlled by double control. For the steel bundles that are stretched twice, the elongation value should be used for compounding in the first-stage tensioning, and the tensioning force value should be used for the second-stage supplementary tensioning. Elongation values ​​are recorded on time.
2. The box beam is moved and stored. A 900-ton tire-type beam lifter is used to lift and move the box beam to the beam storage area, and the beam storage platform is aligned. The beam storage area adopts double-layer beam storage.
3. Hole grouting. Prestressed pipeline grouting adopts a vacuum-assisted grouting process. Continuous grouting with screw grouting pump, when the concentration of the slurry flowing out of the grouting nozzle is consistent with the concentration in the grouting pump, connect the grouting port of the pipeline, and open the valve of the grouting port for grouting. When the slurry passes through the transparent tube, the valve of the exhaust port of the vacuum pump can be closed. When the consistency of the slurry flowing out of the exhaust pipe is the same as before filling, the exhaust valve can be closed and the slurry can be continuously pressed. After raising the pressure in the pipeline to 0.50-0.60 MPa, apply pressure for 3 minutes and close the grouting valve. The grouting of the same pipeline should be carried out continuously and completed at one time.

Warm tips
1. The anchors should be kept properly, and there should be no rust, water, and other sundries in use.
2. Apply lubricant on the outer surface of the tool clip and the inner surface of the taper hole of the anchor plate before use, and often remove the debris on the surface of the clip.
3. Safety measures should be taken during tensioning, and no one can stand after the tensioning jack.
4. The anchor system should be used together and cannot be mixed with other systems.