A manufacturing method of hot-extruded polyethylene zinc-aluminum alloy coated steel wire cable

Abstract

The invention relates to a manufacturing method of a hot-extruded polyethylene zinc-aluminum alloy-coated steel wire cable. According to the steel wire layout rules of the cable section, the length of the cable is controlled by a central standard wire, and the zinc-aluminum alloy is twisted at a twist angle of 2° to 4°. The alloy-coated steel wires are bundled, the steel wire bundles are wrapped with high-strength polyester tape, and then the double-cavity co-extrusion molding process is used to hot-extrude the double-layer high-density polyethylene protective layer. According to the design requirements of the cable wind and rain vibration, the outer layer of the polyethylene protective sleeve Anti-wind and rain vibration embossing is set, and the two ends of the cable are anchored and then coiled and stored. Finally, transport them to the erection site according to the delivery requirements, and erect them one by one. The cable manufacturing process of the present invention is not limited by the construction site, is less affected by climate factors, and is easy to control in industrialized production management, and can meet the requirements of long-length, high-precision and durable use of stay cables in bridges with extra-large spans in marine environments.

Description

technical field [0001] The invention belongs to the technical field of bridge cables, and in particular relates to a manufacturing method of hot-extruded polyethylene zinc-aluminum alloy coated steel wire cables. Background technique [0002] Cable-stayed bridge, also known as cable-stayed bridge, is a bridge in which the main girder is directly suspended on the tower column by cable-stayed cables. It is characterized by its light structure and strong applicability. It can change the combination of beams, cables and towers into different systems, which is suitable for different geological and terrain conditions. Due to the addition of the stay cables in the middle of the main girder, the bending moment is significantly reduced. Compared with other systems of long-span bridges, the amount of steel and concrete is relatively economical. With the help of the pre-tension force of the cable-stayed bridge, the internal force of the main girder can be adjusted to make it evenly an...

AI Technical Summary

Problems solved by technology

[0004] With the rapid development of modern bridges, a number of large-span sea-crossing bridges will be built soon. These bridges have the requirements of long cable length, high precision, and long design life, which cannot be met by using traditional galvanized steel wire cables. The service requirements for the durability of these ultra-long-span bridges in marine environments

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