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Data processing method of optical fiber monitoring data of local deformation and settlement at the end of revetment soft row body

A technology of local deformation and soft body arrangement, which is applied in the direction of complex mathematical operations, can solve problems that have not yet appeared, and achieve the effect of easy calculation

Active Publication Date: 2022-04-01
TIANJIN RES INST FOR WATER TRANSPORT ENG M O T
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Problems solved by technology

However, at this stage, there is no specific data processing method suitable for the scouring and settlement optical fiber monitoring at the head end of the revetment software.

Method used

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  • Data processing method of optical fiber monitoring data of local deformation and settlement at the end of revetment soft row body
  • Data processing method of optical fiber monitoring data of local deformation and settlement at the end of revetment soft row body
  • Data processing method of optical fiber monitoring data of local deformation and settlement at the end of revetment soft row body

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Embodiment Construction

[0025] In order to further understand the invention content, characteristics and effects of the present invention, the following examples are given, and detailed descriptions are as follows in conjunction with the accompanying drawings:

[0026] When the revetment soft row is under the action of water flow, small-scale scour pits appear at the end of the row body, and the failure mode of local deformation and settlement occurs at the end of the row body. Considering that the revetment soft row is a flexible knitted structure, regardless of the soft row arrangement Whether it is rolled up or sinks with the scour pit, the arrangement will be stretched and deformed. Therefore, the following assumptions are made for the above two failure modes:

[0027] ①. Assume that the connection between the software arrangement and the ballast (D-type interlocking block) above it is in good condition, the two deform simultaneously, and the distribution of the ballast (D-type interlocking block)...

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Abstract

The invention discloses a data processing method for the local deformation and settlement optical fiber monitoring data of the end of the bank protection soft row body. The calculation formula for the scouring deformation form of the soft row is: the calculation formula for the final tensile elongation after the deformation of the soft row is: in the formula, z is The final floating or sinking depth of the revetment soft row; H is the tensile strength of the soft row polypropylene woven fabric within the bit width; x is the scour pit range (the middle of the revetment soft row head is 0); γ ​​is the soft row and its upper ballast ρ is the current density; ν is the water velocity; η is a dimensionless adjustment parameter; the present invention can be used for real-time monitoring of the scouring deformation characteristics of bank revetment soft row.

Description

technical field [0001] The invention belongs to the field of hydraulic monitoring, in particular to an optical fiber monitoring data processing method suitable for the occurrence of small-scale scour pits at the end of bank revetment soft row bodies and the occurrence of local deformation and settlement at the end of the row body. Background technique [0002] At present, optical fiber sensing technology is widely used in engineering fields, such as tunnels, bridges, high-speed rail, ports, docks, housing construction, etc. In the above-mentioned projects, the fiber optic sensor is usually fixed on a rigid structure. When the rigid structure undergoes a slight deformation, the pulse laser in the fiber sensor will undergo a Brillouin frequency shift change, and the frequency shift of the pulse laser changes linearly with the strain. The relationship perception changes in the physical properties of the monitored object. Different from the rigid structure, the soft revetment r...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F17/10
CPCG06F17/10
Inventor 刘孟孟孙熙平李越松薛润泽
Owner TIANJIN RES INST FOR WATER TRANSPORT ENG M O T
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