Forming method of anchorage device clamping piece of steel strand stayed cable anchorage system

Abstract

The invention discloses a forming method of anchorage device clamping pieces of a steel strand stayed cable anchorage system. The forming method adopts a plate to carry out cold extruding forming, i.e. directly carries out cold extruding after the sheared material of the plate is adopted so as to form the anchorage device clamping pieces the number of which is 2-4. The forming method is characterized in that according to the specification of the clamping piece, the thickness of the plate is selected, the shape of a shearing plate is trapezoidal, the height thereof is the height of the clamping piece, the trapezoidal plate is curved, cold extrusion is carried out on the shape of single clamping piece, and the clamping piece tooth is formed. The forming method of the clamping piece tooth is direct cold-extruding forming, and also can use milling and forming of a tooth-type milling cutter. The forming method improves the material utilization ratio, solves the problem of unbalanced stress of the clamping piece, improves the anchorage efficiency, leads the construction to be safer and more reliable, and improves the project quality and service life.

Description

technical field [0001] The invention relates to a method for forming anchor clips in a steel strand stay cable anchorage system. Background technique [0002] With the development of prestressing technology, the proportion of clip anchors in prestressing projects is increasing, and the amount is increasing sharply. The most important and most abundant part of clip anchors is the anchor clip. At present, the traditional production process of the clip is to use round bar material and carry out a large amount of machining (sawing, turning, grinding, milling), which has many procedures, large amount of machining, low material utilization rate, and high production cost of the clip. Recently, some manufacturers use round bar stock, and cold extrude it into a conical blank, and then perform machining. The material utilization rate has been improved to a certain extent, but there are many processes and the material utilization rate is still not high. Therefore, it is necessary to d...

AI Technical Summary

Problems solved by technology

In addition, the existing anchor clamps still have the problem of anchoring efficiency, that is, the breaking force of the prestressed tendon is reduced,