The basic knowledge that new users of prestressed anchors should understand is as follows. I hope that through our explanation, we can better help you understand. For the knowledge of prestressed anchors, we should know the following:
      Knowledge 1. The retraction amount of the anchor clip of the clip-type anchor should not exceed 6mm, and the anchor friction and the friction loss of the bell should not exceed 6%.
      Knowledge 2. Anchorage should meet the requirements of grading tensioning, tensioning and relaxation of prestressing tendons. For the post-tensioning structure, the grouting hole or the venting hole should be set on the anchoring tool or its attachment. The hole position and the hole diameter of the grouting hole should meet the requirements of the grouting process, and there should be a structure connected with the grouting pipe. When the enclosure is closed, the anchorage or its attachment shall be provided with a connection structure.
      Knowledge 3, the fixture should have good self-anchoring performance, loose anchor performance and reusability. The jig that needs to be knocked to be loosened must be guaranteed to have no effect on the anchoring of the prestressed tendons and to ensure the safety of the operator.
      The material performance index of knowledge IV, anchors, fixtures and connectors is not lower than the requirements of No. 45 steel, and should meet the design requirements, with mechanical performance and chemical composition certificate, quality assurance.
      Knowledge 5. Anchors for anchoring 915.2mm steel strands. The minimum and minimum thickness of anchor plates of 1~21 holes should meet the requirements of the following table. 22-hole and above anchor plates can be implemented with reference to the design documents.