A distributed optical fiber reinforcement device embedded in a structure and its application method

Abstract

The invention relates to a device for reinforcing distributed optical fibers embedded inside a structure. The device comprises node reinforcing riveting bases and an optical fiber reinforcing segment.The node reinforcing riveting base comprises an anchor rod, a first panel, a second panel and a pressing plate. The anchor rod perpendicularly passes through the pressing plate; the first panel and the second panel are both provided on the anchor rod; the first panel and the second panel are both provided with optical fiber holes for the optical fibers to pass through; the optical fiber reinforcing segment is provided at the optical fiber holes. According to the device for reinforcing the distributed optical fibers embedded inside the structure, a plurality of node reinforcing riveting basesare provided at the optical fibers arranged in a straight line, so that redundant segments of the optical fibers are reduced and the break is prevented; the optical fiber reinforcing segment is also provided at the optical fibers at the bend, so that the detection precision can be greatly guaranteed while the optical fibers are prevented from breaking; a space for operation is also provided between the first panel and the second panel, so that operation is facilitated, and a good remedy is also provided.

Description

technical field [0001] The invention relates to the technical field of building structure detection, in particular to a distributed optical fiber reinforcement device embedded in a structure and a use method thereof. Background technique [0002] Distributed fiber optic sensors have the advantages of wide distribution, high accuracy, and simple operation, and can be used for internal detection of structures. However, due to their thinner radii, they are prone to fracture when subjected to radial shear. The type optical fiber is difficult to replace, and once it breaks, it will cause the failure of the entire monitoring section, which will bring great adverse effects to the structural inspection. At present, there are many ways to strengthen the optical fiber, but the reinforcement also affects the detection accuracy, and it is easy to miss a lot of disease information, and most of the existing reinforcement methods have a single reinforcement function, which cannot adapt to ...

AI Technical Summary

Problems solved by technology

[0003] There are several difficulties in strengthening the optical fiber. First, it is necessary to protect the optical fiber without affecting its detection accuracy. Existing research shows that the thinner the sheath of the distributed optical fiber, the better the strain transfer effect on the structure. Therefore, the blind Stacking the protective layer on the surface of the optical fiber will not achieve the effect, and will also increase the cost and reduce the monitoring accuracy; secondly, the reinforcement of the distributed optical fiber should consider the remedial measures after the optical fiber is unfortunately broken. After experiencing a large structural deformation, Distributed optical fiber is difficult to survive, therefore, it is necessary to have a remedy for broken optical fiber; finally, the monitoring of optical fiber is a process with a high degree of automation, and it is necessary to improve the reinforcement process and pursue an efficient process

However, the current reinforcement methods cannot overcome these difficulties well.

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