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Pile-based soil settlement monitoring system based on optical fiber optical measurement technology

A measurement technology and fiber optics technology, applied in the field of pile-based soil settlement monitoring system, can solve the problems of measurement errors and inability to monitor in real time, and achieve the effects of reducing influence, eliminating influence and high measurement accuracy

Inactive Publication Date: 2019-05-31
CHONGQING UNIV OF ARTS & SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to provide a pile-based soil settlement monitoring system based on optical fiber optics measurement technology to solve the problems in the prior art that there are errors in measurement and cannot be monitored in real time

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  • Pile-based soil settlement monitoring system based on optical fiber optical measurement technology
  • Pile-based soil settlement monitoring system based on optical fiber optical measurement technology
  • Pile-based soil settlement monitoring system based on optical fiber optical measurement technology

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Embodiment Construction

[0025] The following is further described in detail through specific implementation methods:

[0026] The reference signs in the accompanying drawings of the description include: a wide-spectrum light source 1, a first fiber circulator 2, a first connecting fiber 3, a first beam splitter 4, a first self-focusing fiber collimator 5, a first reflector 6, Stepper motor 7, second connecting optical fiber 8, primary demultiplexer 9, secondary demultiplexer 10, second optical fiber circulator 11, protective shell 12, foundation pile 13, settlement ring 14, photoelectric detection 15, the third connecting optical fiber 16, the second beam splitter 17, the second self-focusing fiber collimating mirror 18, the second reflecting mirror 19, and the fourth connecting optical fiber 20.

[0027] The embodiment is basically as attached Figure 1-3 Shown: a pile-based soil settlement monitoring system based on fiber optic measurement technology, including a signal demodulation part, network ...

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Abstract

The invention, which belongs to the technical field of optical fiber optical measurement, specifically discloses a pile-based soil settlement monitoring system based on the optical fiber optical measurement technology. The system comprises a signal demodulation part, a network topology structure, a signal detection part and a measurement part. The signal demodulation part includes a broad spectrumlight source, a first connecting fiber, a second connecting fiber, a first fiber circulator, an adjustment arm, a data acquisition card and a computer. The network topology structure is formed by anoptical switch or a multi-channel divider and is formed by connection of a tree type structure. The signal detection part includes a plurality of detecting units; and each detection unit includes a second fiber circulator and a photoelectric detector. The measuring part includes a plurality of identical pile-based settlement sensors; and each pile-based settlement sensor includes a second opticalsplitter, a second self-focusing fiber collimator, a second reflector, a protective casing, a settling ring, and a pile. With the disclosed settlement monitoring system, problems that the measurementhas the error and real-time monitoring can not be realized in the prior art are solved.

Description

technical field [0001] The invention belongs to the technical field of optical fiber optic measurement, in particular to a pile foundation soil settlement monitoring system based on the optical fiber optical measurement technology. Background technique [0002] Settlement monitoring is an important monitoring content in building structure health monitoring, especially for large buildings on soft soil foundations, such as: reservoir dams, artificial island walls, etc. Under the action of building loads, the foundation of such large-scale projects usually undergoes a certain degree of settlement, and there is a long-term slow and uneven settlement, which will affect the structural stability of the building. Therefore, the settlement monitoring of buildings, especially the monitoring of the layered settlement characteristics of soil has important engineering value and significance. [0003] At present, the soil layered settlement monitoring of building foundations mainly adopt...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01C5/00G01D5/353
Inventor 张平磊张滟
Owner CHONGQING UNIV OF ARTS & SCI
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