A method for manufacturing prefabricated parallel steel wire preformed strands for main cables of suspension bridges

Abstract

The invention discloses a method for making prefabricated parallel steel wire preformed strands for main cables of suspension bridges, S1) making marking steel wires; S2) making standard length steel wires; S3) marking saddle points; Preforming at the saddle; S6) coiling of prefabricated parallel steel wire preformed strands; S7) filling and anchoring of prefabricated parallel steel wire preformed strands; the manufacturing method of the prefabricated parallel steel wire strands disclosed in the present invention is more efficient than the traditional process Simple, and the whole processing process uses brass alloy to make marking steel wire and copper alloy to make standard length steel wire, which makes the reference of the whole marking steel wire and standard length steel wire more clear, easier to find, and further improves the convenience of the whole processing; at the same time, the use of connection The clamp connects the strands, the main saddle and the loose saddle, without the need for secondary shaping of the strands, which not only simplifies the processing process, but also protects the integrity of the strands to the greatest extent and ensures the integrity of the steel wires for the strands. sex.

Description

technical field [0001] The invention relates to the technical field of prefabricated parallel steel wire preformed strands, in particular to a method for manufacturing prefabricated parallel steel wire preformed strands for main cables of suspension bridges. Background technique [0002] Suspension bridge, also known as suspension bridge, is an ancient bridge type. People used rattan and bamboo to make suspension bridges long ago to solve traffic problems. There are two construction methods for the main cable of long-span suspension bridges, namely Air Spinning (AS: Air Spinning) and Prefabricated Parallel Wire Strand (PPWS: Prefabricated Parallel Wire Strand). The former is referred to as the AS method, and the latter is referred to as the PS method or PWS (ParallelWire Strands) method. The AS method contains less total strands per cable, about 30-90 strands, but each strand contains more than 400-500 strands. Therefore, its single-strand anchoring tonnage is large, and t...

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Problems solved by technology

[0004] However, there are many problems in the implementation of this method, such as using coloring to set the marking steel wires, it is difficult to distinguish the marking steel wires directly from the cross section, and the coloring is easy to be removed during processing, resulting in unclear marking steel wires; In the preforming process of the cable saddle, it is necessary to reshape the partial cross section of the cable strand preforming part, which is prone to the problem of partial steel wire breakage, thus affecting the overall quality

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