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A Pile Integrity Detection System and Method Based on Low Coherence Interferometry Technology

A low-coherence interference and integrity detection technology, which is applied in the field of pile integrity detection system, can solve the problems of high maintenance cost, low accuracy, and susceptibility to interference, and achieve reduced maintenance cost, high accuracy, and good stability Effect

Active Publication Date: 2020-04-07
DONGHUA UNIV +1
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Problems solved by technology

[0010] The technical problem to be solved by the present invention is to provide a pile body integrity detection system and method based on low-coherence interference technology with high accuracy, good stability, reduced maintenance costs, and less susceptible to interference, which solves the problem of traditional pile foundation detection. The method has low accuracy, poor stability, high maintenance costs, and is easily disturbed, which has great limitations

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  • A Pile Integrity Detection System and Method Based on Low Coherence Interferometry Technology
  • A Pile Integrity Detection System and Method Based on Low Coherence Interferometry Technology
  • A Pile Integrity Detection System and Method Based on Low Coherence Interferometry Technology

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Embodiment Construction

[0043] In order to make the present invention more comprehensible, preferred embodiments are described in detail below with accompanying drawings.

[0044] The present invention is a pile integrity detection system based on low-coherence interference technology, such as Figure 1-Figure 4 As shown, it includes a low-coherence interferometer sensing system and a pile body 11, a signal arm 5 is arranged on the low-coherence interferometer sensing system, a sensor assembly 6 is arranged on the signal arm 5, and a reserved hole is arranged in the pile body 11 12 and the packaging signal arm for measuring the amount of strain variation, the packaging signal arm and the signal arm 5 are both arranged in the reserved hole 12 .

[0045] The low-coherence interferometer sensing system includes a broadband light source 1. The broadband light source 1 is connected to an optical path coupler 4 through an optical path 3. The optical path coupler 4 is divided into two paths after receiving ...

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Abstract

The invention discloses a pile body integrity detection system based on low-coherence interference technology, which is characterized in that it includes a low-coherence interferometer sensing system and a pile body, the low-coherence interferometer sensing system is provided with a signal arm, and the signal arm A sensor component is arranged on the pile body, and a reserved hole and a packaged signal arm for measuring strain variation are arranged in the pile body, and the packaged signal arm and the signal arm are both arranged in the reserved hole. The invention is based on low-coherence interference technology, and detects the integrity of the pile body by placing a low-coherence interference sensor in the reserved hole of the pile body, which has high accuracy, good stability, reduced maintenance costs, and is not easily disturbed. widely.

Description

technical field [0001] The invention relates to a pile body integrity detection system and method based on low-coherence interference technology, belonging to the field of intelligent detection of geotechnical engineering. Background technique [0002] In geotechnical engineering foundation engineering, pile foundation is an important foundation form. In recent years, due to the construction of a large number of high-rise buildings that require deeper foundation pits, a large number of deep and large-diameter pile groups are required. Since the pile foundation is deeply buried in the underground soil layer, it is a concealed project. The quality of the pile foundation and whether there are defects directly determine its bearing capacity, and it is not easy to be detected. Construction accidents caused by pile foundation defects are extremely harmful. In traditional pile foundation detection methods, point measurement methods such as pre-embedded strain gauges on pile steel ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N21/95G01K11/32G01B11/16
CPCG01B11/161G01K11/32G01N21/95
Inventor 张一帆刘子雄洪成雨
Owner DONGHUA UNIV
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