OFDR-based expressway roadbed disease monitoring system and method

Abstract

The invention discloses an OFDR-based expressway roadbed disease monitoring system and method. The system comprises a roadbed settlement optical fiber sensing device, a roadbed horizontal deformationoptical fiber sensing device, a bridge foundation pile deformation optical fiber sensing device, a water level change and precipitation optical fiber sensing device, an OFDR optical fiber data acquisition and transmission system, an on-site road condition monitoring system, a solar power supply and data transmission system, an OFDR optical fiber data processing and analysis system, a wavelet processing and noise reduction system, a monitoring result display system, a cloud platform data management and early warning system and a remote receiving system. According to the invention, OFDR opticalfiber data is collected and transmitted in real time; roadbed settlement difference, horizontal displacement, foundation pile dynamic strain response, precipitation, underground water level and riverwater level information are obtained through the optical fiber data processing system; and the information is displayed in a monitoring result display system in a chart manner, is uploaded to the cloud platform data management and early warning system and then is compared with an early warning value, and a disease treatment scheme is searched in time, so that remote monitoring and timely treatmentare realized.

Description

technical field [0001] The invention relates to a monitoring system for highway subgrade deformation and disease under dynamic load, in particular to an OFDR-based highway subgrade disease monitoring system and method. Background technique [0002] Subgrade deformation, such as settlement and horizontal displacement of subgrade slope, is one of the most common diseases of highways that have been opened to traffic. In severe cases, it will cause driving safety accidents, and the annual maintenance and treatment costs remain high. [0003] The traditional subgrade deformation monitoring system mostly uses buried settlement marks, inclinometer tubes, and axial force meters to monitor subgrade settlement, horizontal displacement, and deformation of embankment or bridge foundation piles, which has a large workload, requires the cooperation of personnel, and is vulnerable to weather factors The shortcomings of impact and low monitoring accuracy cannot fully obtain the deformation ...

AI Technical Summary

Problems solved by technology

[0005] Purpose of the invention: The present invention provides an OFDR-based highway subgrade disease monitoring system and method to solve the problem that the monitoring equipment in the prior art cannot be deformed together with the subgrade, and it is difficult to accurately monitor subgrade settlement, horizontal deformation, and bridge foundation pile deformation. Displacement changes, water level information lead to roadbed disease parameters, and technical issues for early warning

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