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Large-scale intelligent high-strength steel wire coupled with fiber gratings and its manufacturing method

A high-strength steel wire and optical fiber grating technology, applied in the direction of measuring devices, optical devices, instruments, etc., can solve the problems of reducing the accuracy of fiber grating monitoring and limiting the range of fiber grating monitoring, so as to avoid adverse effects, improve accuracy and convince force, improve the effect of adhesion

Active Publication Date: 2018-10-09
桂林汉西鸣科技有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of this, the technical problem to be solved in this application is to provide a large-range intelligent high-strength steel wire coupled with a fiber grating and its manufacturing method, which solves the problem that the monitoring accuracy of the fiber grating is reduced due to the layout process and the monitoring range of the fiber grating is limited.

Method used

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  • Large-scale intelligent high-strength steel wire coupled with fiber gratings and its manufacturing method
  • Large-scale intelligent high-strength steel wire coupled with fiber gratings and its manufacturing method
  • Large-scale intelligent high-strength steel wire coupled with fiber gratings and its manufacturing method

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Embodiment 1

[0035] Such as Figure 1-Figure 5 As shown, this embodiment provides a large-range intelligent high-strength steel wire 1 coupled with a fiber grating, on which at least one spiral groove 2 is arranged, and an optical fiber 3 is placed in the groove 2 and is used to cover all The optical fiber protection layer 4 of the optical fiber line 3, the optical fiber line 3 is engraved with a plurality of gratings.

[0036] Specifically, the cross section of the groove 2 is arc-shaped, and its radius is 0.1-0.6 mm.

[0037] In this embodiment, the optical fiber wire 3 and the optical fiber protective layer 4 fill the groove 2 .

[0038] Specifically, the number of two grooves is 1-8.

[0039] In this example, if Figure 5 As shown, the helix angle θ of the groove 2 may be greater than 0° and less than or equal to 90°. In this embodiment, the helix angle θ of the groove 2 is 30°.

[0040] In the present embodiment, the helix angle θ of the groove 2 increases the range of the optical...

Embodiment 2

[0044] This embodiment provides a method for manufacturing a large-range intelligent high-strength steel wire 1 coupled with an optical fiber 3, and the method steps include:

[0045] Step 1: Open a spiral groove 2 on the steel wire;

[0046] Step 2: Stretching the steel wire, the tensile stress is between 0 and 1860MPa;

[0047] Step 3: apply the optical fiber wire 3 adhesive in the groove 2, and paste the optical fiber wire 3 engraved with the grating in the groove 2;

[0048] Step 4: placing an optical fiber protection layer 4 for covering the optical fiber wire 3 in the groove 2 .

[0049] In this embodiment, after the optical fiber 3 is wound, the middle wire in the steel strand or a steel wire of the steel wire bundle cable is kept stretched for a period of time until the adhesive of the optical fiber 3 takes effect.

[0050] In this embodiment, the cross-section of the groove 2 is arc-shaped, and its radius is 0.1-0.6mm; the number of the groove 2 is 1-8; the helix an...

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Abstract

The application discloses a coupled fiber grating wide-range intelligent high-strength steel wire which is provided with at least one spiral groove. The grooves are internally provided with optical fiber lines and protection layers used for covering the optical fiber lines. Multiple gratings are etched on the optical fiber lines. Meanwhile, the invention also provides a manufacturing method of the coupled fiber grating wide-range intelligent high-strength steel wire. The spiral grooves are arranged on the steel wire, and the size of the spiral angle of the grooves is changed according to strain range of a component so that measurement range of a fiber grating sensor is extended, and adverse factors of limiting measurement range caused by glass fragility of fiber grating material can be avoided; the fiber gratings are arranged in the internal part of the steel wire so that adverse influence on the fiber grating sensor caused by construction factors can be avoided, and the service life of the fiber grating sensor can be guaranteed; and multiple spiral grooves can be arranged on the steel wire and multiple groups of fiber gratings work simultaneously so that comparison of multiple data can be performed, and accuracy of the monitoring result can be enhanced.

Description

technical field [0001] The application belongs to the technical field of strain monitoring of prestressed steel strands or steel bundle cables, and in particular relates to a large-scale intelligent high-strength steel wire coupled with an optical fiber grating and a manufacturing method thereof. Background technique [0002] Prestressed structures and building cables are widely used in major engineering structures in various fields such as bridges, high-rise buildings, high-rise buildings, underground structures, marine structures, pressure vessels, large-tonnage ship structures, and nuclear power plants. The service life of various structures is as long as decades or even hundreds of years. During the use process, the coupling effect of factors such as environmental erosion, material aging and long-term load effects will inevitably cause damage to structures and systems to resist natural disasters. The capacity attenuation and even the normal use function will be reduced, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01B11/16
Inventor 朱万旭覃荷瑛邢心魁吕海波罗伯光李长乐
Owner 桂林汉西鸣科技有限责任公司
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