Optical fiber grating intelligent steel strand and its manufacture method

A technology of intelligent steel strands and fiber gratings, applied in the direction of fiber mechanical structure, coupling of optical waveguides, transmission of sensing components by optical devices, etc., can solve problems such as poor shear resistance and fragile fiber grating sensors, and achieve easy processing Molding, good lead handling, high strength effect
CN101210983BActive Publication Date: 2010-12-22LIUZHOU OVM MASCH CO LTD
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Patents(China)
Current Assignee / Owner
LIUZHOU OVM MASCH CO LTD
Publication Date
2010-12-22

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Abstract

An intellectual steel strand for fiber lattice, which is molded by the stranding of central wire and wires around the central wire, the central wire is the enhanced composite intellectual rib of fiber lattice of a fiber lattice sensor; the intellectual rid comprises a fiber enhanced rid and fiber distributed along the lengthwise direction of the fiber enhanced rib, the fiber lattice sensor; a plastic sleeve is sleeved around the fiber without lattice, separates from the fiber and is connected with the fiber enhanced rib; the fiber transmitted by the fiber lattice sensor is led out from the head of the steel strand; a preparation method of the steel strand comprises the following steps of: firstly preparing the fiber lattice fiber enhanced composite intellectual rib; scattering stranding machines with the same length with the intellectual rib and substituting the central wire of the steel strand with fiber lattice fiber enhanced composite intellectual rib and finally molding the wire through stranding. The invented intellectual steel strand has self sensing property with all the advantages of fiber lattice, which can easily grasp the stress condition of the steel strand in the construction and service periods and instruct the tensioning of initial stress and the construction.
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Description

Technical field:

[0001] The invention relates to an intelligent steel strand applied to prestressed engineering structures such as tied arch bridges, cable-stayed bridges, suspension bridges, external cables, ground anchors, etc., and a manufacturing method thereof. An intelligent steel strand with a real-time monitoring function and a manufacturing method thereof. Background technique:

[0002] The steel strand is a single-strand steel wire rope twisted from multiple steel wires, and is widely used as structural components such as concrete prestressed tendons, bridge cables, and geotechnical anchor cables. It is a key stressed component in these structures, and its working state during service is directly related to the safety of the structure. Under normal circumstances, the steel strands are affected by the harsh working environment and are prone to rust, corrosion and deterioration, threatening the safety of the structure during service. Therefore, how to realize the r...

Claims

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