What are the steps of prestressed tension construction?

In prestressed tensile construction, the steel strand is installed first. The steel strand must be cut in a flat and clean area. The cutting length of the strand wire shall be determined by calculation. Factors such as channel curve length, anchor fixture length, jack length and exposed working length should be considered in calculation. Grinding wheel saw is used for cutting prestressed steel bars. During the blanking process, the cut end of the steel strand should be tightened with iron wire first and cut with the grinding wheel cutter.

What are the steps of the construction of prestressed tension equipment?

The second is the orchestration. When making bundles, the strands must be parallel to each other and cannot cross each other. The steel strand needs to be numbered. After completion, it should be uniformly numbered, listed, and stacked neatly by category for future use.

Before threading, check that the pipe is clear. If the hole is blocked, measures must be taken to dredge the end of the steel strand, which must be shaped and wrapped, and can be pulled manually or by a winch. When threading, a wire is inserted into the pipe, the wire is led out with the wire, the other end of the wire is connected to the wire, and the wire is pulled out with the hoist.

When tensioning, the equipment and instruments using prestressing are generally required to be used and managed by special personnel, and are regularly maintained and inspected. The jack and the pressure gauge should be checked to determine the relationship between the tension and the pressure gauge curve, and regularly inspected by the legal metrological technical structure authorized by the competent authority. The tensioning machine equipment should be used with the anchor, and inspection and inspection should be carried out when entering the site. The construction site has the necessary precautions to ensure the stability of all operators and equipment. When tensioning, the tension line of the jack should be consistent with the axis of the prestressed tendon.

Disclaimer: This article is editorially reproduced for the purpose of conveying more information only. If you think that our reproduction violates the Copyright Law or damages your interests, please contact us in time, we will deal with it in a timely manner.