Roadbed settlement monitoring device based on fiber grating technology and installation method thereof

Abstract

The invention provides a roadbed settlement monitoring device based on fiber grating technology, and the device comprises a fiber grating settlement meter, a steel tank sliding rail, a settling rod, asettling plate, a water filling tank, a fiber grating demodulator and terminal processing equipment, wherein the fiber grating settlement meter is moveably connected to the steel tank sliding rail, the steel tank slide rail is connected onto the settling rod, the settling plate is connected under the settling rod and is buried in soil body, the water filling tank is connected to the fiber gratingsettlement meter, the input end of the fiber grating demodulator is electrically connected to the fiber grating settlement meter, and the output end of the fiber grating demodulator is electrically connected to the terminal processing equipment. The roadbed settlement monitoring device provided by the invention has the advantages such as anti-electromagnetic interference, high sensitivity, high test precision and strong durability, and can perform real-time dynamic monitoring on roadbed settlement.

Description

technical field [0001] The invention relates to the technical field of road and railway subgrade settlement deformation monitoring, in particular to a subgrade subsidence monitoring device based on optical fiber grating technology and an installation method thereof. Background technique [0002] In recent years, with the continuous construction of high-speed railways and highways, the requirements for safety, comfort and durability of high-speed railways and highways have been increasing, and more stringent requirements have been put forward for subgrade settlement. The uneven settlement of the subgrade will lead to engineering problems such as road surface cracking and road slope collapse, which seriously threatens the operation safety of roads and railways. Therefore, subgrade settlement monitoring has become an indispensable link in engineering construction. Subgrade settlement monitoring plays a key role in preventing common engineering problems such as uneven subsidenc...

AI Technical Summary

Problems solved by technology

General electrical sensors generally have shortcomings such as short life, susceptibility to environmental influences, electromagnetic interference, and incapability of real-time online monitoring, and their measurement accuracy and use conditions are limited.

However, the efficiency of artificial settlement detection is low, the detection frequency is limited, and the error is large, which cannot meet the requirements of real-time online monitoring of operating lines

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