high-quality prestressed steel wire and steel strand Manufacturer & Supplier

Home / News / Never Too Late to Know /

7 Principles That Need to Be Followed During the Tensioning Process of Prestressed Concrete Steel Strands

7 Principles That Need to Be Followed During the Tensioning Process of Prestressed Concrete Steel Strands

Issue Time:2022-01-07
 the prestressed concrete steel wire mechanical properties test method

The prestressed anchorage material is a necessary engineering tool in the tensioning of prestressed concrete strands. The engineering function of the anchorage is only anchoring and tensioning. First of all, let's have a preliminary understanding of some basic knowledge of the tension anchorage of the steel strand. Strand tension anchor is a very common material in prestressed anchor systems, and it is often written as YJM/YM15-N and YJM/YM13-N in engineering terms.

Among them, Y is usually understood as a ground anchor, which is also one of the representative meanings of tension anchors. M stands for anchorage, 15/13 stands for steel strand (anchor cable, in slope protection engineering, steel strand is customarily called anchor cable), and N represents the number of holes in the anchor. For example, YM15-3 is a 3-hole anchor with a 15.24mm steel strand.

After introducing the basic knowledge of steel strand tension anchors, let's talk about the precautions of prestressed concrete steel strands in the tensioning process.

1. When installing the anchor, the anchor plate should be aligned with the top of the backing plate; the clip should be flush after installation and tap with a special tool if necessary, but the clip should not be damaged by heavy knocking;

2. When tensioning construction, the corresponding limit plate and tool anchor must be matched according to the specifications of the working anchor;

3. During the period from the application of prestress to the packaging after anchoring, unless effective shielding measures are taken, the operator shall not move directly in front of the anchor, and shall not strike the steel strand or anchor by gravity; when removing excess steel strand, ensure that the anchor is not Affected by the cutting head, it is recommended to use a grinding wheel for cutting, and it is forbidden to use electric welding and oxygen cutting;

4. Before the sample static load test, the user should clean the clamps and anchor plate holes, and the clamps should be installed symmetrically and flush, otherwise it will affect the static load test performance;

5. The anchor should be kept properly, and there should be no embroideries, water, and other dirt in use; there should be no current conduction. Before installing the anchor, please clean up the dust and dirt on the steel strand of the anchor clamping section, so as to avoid the rust and dirt filling the tooth grooves of the clip during tension and causing slippage;

6. Please strictly verify the strength and diameter of the steel strand. When the steel strand is corroded, it cannot be effectively tensioned and anchored. Before installing the anchor plate, please check whether there is any leakage and bonding of the prestressed tendons in the prestressed ducts, if any, it should be eliminated;

7. The working clamp can be installed into the anchor plate to clamp the steel strand after removing the packing paper. However, when the pre-stressed bundle is longer (more than 36 meters) or the single bundle exceeds 12 steel strands, it should be coated on the cone hole of the anchor plate. A small amount of lubricant (such as anchoring spirit) to facilitate the follow-up of the clip, anchor withdrawal, and anchoring, to prevent wire breakage.

Prestressed concrete strand tensioning is to add tension in advance to the component, so that the prestressed tension component bears the stress, which in turn causes it to produce a certain deformation to cope with the load on the structure itself. If you want to know more about this after reading the above, CHUNPENG is happy to share relevant knowledge with you.

CHUNPENG is a professional manufacturer of prestressed concrete products. We have many years of experience and a strict quality inspection system. We uphold a responsible attitude towards users and take full control of all aspects of product manufacturing and export. At the same time, we will also provide a one-stop-shopping service according to the diverse needs of users. If you want to buy our prestressed concrete strands, please contact us immediately!

pdf document download
  • ASTM A416 Chunpeng 7 wire prestressed concrete strand

    ASTM A416 Chunpeng 7 wire prestressed concrete strand

    2021-03-05
  • PE coated PC strand

    PE coated PC strand

    2021-03-05
  • pc strand

    pc strand

    2021-03-05
  • PC WIRE

    PC WIRE

    2021-03-05
Learn more from our FAQ
  • Can I visit you?

    Answer:

    Sure, If you would like to visit our factory, please contact us to make an appointment.

    More details
  • How can I know how my order is being done?

    Answer:

    We will inspect and test all items in order to avoid damage and missing parts before shipping. The detailed inspection pictures of the order will be sent to you for your confirmation before delivery.

    More details
  • Can you give warranty of your products?

    Answer:

    3.Yes, we extend a 100% satisfaction guarantee on all items. Please feel free to feedback immediately if you are not pleased with our quality or service. For the overseas orders, we provided emails with details including pictures or short video to you to confirm the quality before the shipment.

    More details
  • 4.How long of your delivery time?

    Answer:

    Generally need 5-10 days if it is in stock. Or need 15-20 days if it is out of stock.

    More details
Request a Quote
Fill all information details to consultwith us to get sevices from us
*Email
*Tel
*Title
*Content
Join to chunpeng to get information