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Distributed optical fiber sensing-based goaf bridge pile foundation deformation monitoring system and method
The invention belongs to the technical field of bridge safety monitoring and early warning, and discloses a goaf bridge pile foundation deformation monitoring system and method based on distributed optical fiber sensing. The system comprises a BOTDA optical fiber demodulator, a first sensing optical cable and a second sensing optical cable, the first sensing optical cable comprises a first measuring section and a second measuring section which are respectively positioned on two opposite vertical lines on the side surface of the bridge pile foundation, two ends of the first measuring section and the second measuring section are positioned at the lower part of the bridge pile foundation, and the middle parts extend to the top of the bridge pile foundation; the second sensing optical cable comprises a third measuring section which is located on the lower portion of the bridge pile foundation surface and surrounds the bridge pile foundation by one circle in the horizontal plane direction. The BOTDA optical fiber demodulator is used for inputting optical signals to the first sensing optical cable and the second sensing optical cable, and is also used for respectively calculating the strain of the bridge pile foundation in the horizontal direction and the vertical direction according to the optical signals output by the first sensing optical cable and the second sensing optical cable.
本发明属于桥梁安全监测预警技术领域，公开了基于分布式光纤传感的采空区桥梁桩基变形监测系统和方法。系统包括：BOTDA光纤解调仪，第一传感光缆、第二传感光缆；第一传感光缆包括分别位于桥梁桩基侧表面的两相对竖直线上的第一测量段、第二测量段，且第一测量段和第二测量段的两端位于桥梁桩基地表下部，中部延伸至桥梁桩基顶部；第二传感光缆包括位于桥梁桩基地表下部并沿水平面方向绕桥梁桩基一圈的第三测量段；BOTDA光纤解调仪用于向第一传感光缆和第二传感光缆输入光信号，还用于根据第一传感光缆和第二传感光缆输出的光信号，分别计算得到桥梁桩基的水平和垂直方向的应变。
Distributed optical fiber sensing-based goaf bridge pile foundation deformation monitoring system and method
The invention belongs to the technical field of bridge safety monitoring and early warning, and discloses a goaf bridge pile foundation deformation monitoring system and method based on distributed optical fiber sensing. The system comprises a BOTDA optical fiber demodulator, a first sensing optical cable and a second sensing optical cable, the first sensing optical cable comprises a first measuring section and a second measuring section which are respectively positioned on two opposite vertical lines on the side surface of the bridge pile foundation, two ends of the first measuring section and the second measuring section are positioned at the lower part of the bridge pile foundation, and the middle parts extend to the top of the bridge pile foundation; the second sensing optical cable comprises a third measuring section which is located on the lower portion of the bridge pile foundation surface and surrounds the bridge pile foundation by one circle in the horizontal plane direction. The BOTDA optical fiber demodulator is used for inputting optical signals to the first sensing optical cable and the second sensing optical cable, and is also used for respectively calculating the strain of the bridge pile foundation in the horizontal direction and the vertical direction according to the optical signals output by the first sensing optical cable and the second sensing optical cable.
本发明属于桥梁安全监测预警技术领域，公开了基于分布式光纤传感的采空区桥梁桩基变形监测系统和方法。系统包括：BOTDA光纤解调仪，第一传感光缆、第二传感光缆；第一传感光缆包括分别位于桥梁桩基侧表面的两相对竖直线上的第一测量段、第二测量段，且第一测量段和第二测量段的两端位于桥梁桩基地表下部，中部延伸至桥梁桩基顶部；第二传感光缆包括位于桥梁桩基地表下部并沿水平面方向绕桥梁桩基一圈的第三测量段；BOTDA光纤解调仪用于向第一传感光缆和第二传感光缆输入光信号，还用于根据第一传感光缆和第二传感光缆输出的光信号，分别计算得到桥梁桩基的水平和垂直方向的应变。
Distributed optical fiber sensing-based goaf bridge pile foundation deformation monitoring system and method
基于分布式光纤传感的采空区桥梁桩基变形监测系统和方法
XUE XIAOHUI (author) / CHEN BIHUI (author) / DONG ZIXUAN (author) / LI JIAN (author)
2024-11-29
Patent
Electronic Resource
Chinese
IPC:
E02D
FOUNDATIONS
,
Gründungen
/
E01D
BRIDGES
,
Brücken
/
G01B
MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS
,
Messen der Länge, der Dicke oder ähnlicher linearer Abmessungen
/
G01C
Messen von Entfernungen, Höhen, Neigungen oder Richtungen
,
MEASURING DISTANCES, LEVELS OR BEARINGS
/
G02B
Optische Elemente, Systeme oder Geräte
,
OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
/
G02F
DEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH IS MODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THE DEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY, COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g. SWITCHING,...
,
Vorrichtungen oder Anordnungen, deren optische Arbeitsweise durch Änderung der optischen Eigenschaften des Mediums der Vorrichtungen oder Anordnungen geändert wird zum Steuern der Intensität, Farbe, Phase, Polarisation oder der Richtung von...
/
G06F
ELECTRIC DIGITAL DATA PROCESSING
,
Elektrische digitale Datenverarbeitung
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