Full-scale optical fiber monitoring technology for multilayer medium of road structure

A technology of road structure and multi-layer medium, which is applied in the direction of roads, roads, liners embedded in the road surface, etc., to achieve long-term health monitoring, real-time monitoring, and feasible methods
CN102175367AInactive Publication Date: 2011-09-07DALIAN UNIV OF TECH
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Applications(China)
Current Assignee / Owner
DALIAN UNIV OF TECH
Publication Date
2011-09-07
Estimated Expiration
Not applicable Β· inactive patent

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Abstract

The invention provides a full-scale optical fiber monitoring technology for a multilayer medium of a road structure and belongs to the technical field of intelligent structure health monitoring. The full-scale optical fiber monitoring technology is characterized in that a distributed optical fiber etched with fiber grating locally is arranged along the multilayer medium of a road structure in a full scale way at a radian with a bent radius not less than 2cm and is used as a sensing element for monitoring the multilayer medium of the road structure with local high precision and full-scale higher precision. The full-scale optical fiber monitoring technology has the advantages that the effects of local high-precision test and full-scale higher precision test can be achieved and the real-time monitoring and long-term health monitoring for the road structure can be realized. Besides, the monitoring technology has distinct thought, the method is feasible, and an integrated system is low in cost; and the monitoring technology is easily applied to the field of health monitoring for the road structure so that the road structure can be used more reasonably and efficiently.
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Description

technical field

[0001] The invention belongs to the technical field of structural intelligent health monitoring, and relates to a full-scale optical fiber monitoring technology for road structure multi-layer media. Background technique

[0002] Roads are usually exposed in nature, and are not only affected by vehicle loads, but also directly affected by external environmental factors such as temperature, light, rain and snow. The rapid growth of traffic volume brought about by the development of domestic economy has caused many road structures to be damaged in different scales and degrees due to repeated overloading, long-term fatigue accumulation effects and environmental factors, which seriously affect the performance of road structures. Therefore, it is necessary to monitor the service state of the road structure in order to repair and maintain it in time. At present, the conventional detection technologies for road structures mainly include manual inspection technology,...

Claims

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