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Chinese Journal of Lasers, Volume. 47, Issue 5, 0504003(2020)

Penetration Characteristics of Jacked Piles with Different Pile Diameters Based on Fiber Bragg Grating Sensing Technology

Jiaxiao Ma1, Yonghong Wang1,2、*, Mingyi Zhang1,2, Xiaoyu Bai1,2, and Xueying Liu1
Author Affiliations
  • 1School of Civil Engineering, Qingdao University of Technology, Qingdao, Shandong 266033, China
  • 2Cooperative Innovation Center of Engineering Construction and Safety in Shandong Blue Economic Zone, Qingdao, Shandong 266033, China
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    AbstractGet PDF(in Chinese)
    Figures&Tables (19)
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    References (32)
    Cited By (2)
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    Figures & Tables(19)
    Working schematic of FBG

    Fig. 1. Working schematic of FBG

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    Calibration schematic of FBG strain sensor

    Fig. 2. Calibration schematic of FBG strain sensor

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    Calibration curve of FBG strain sensor

    Fig. 3. Calibration curve of FBG strain sensor

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    Schematic of FBG pressure sensor

    Fig. 4. Schematic of FBG pressure sensor

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    Calibration device of FBG pressure sensor

    Fig. 5. Calibration device of FBG pressure sensor

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    Calibration curve of FBG pressure sensor

    Fig. 6. Calibration curve of FBG pressure sensor

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    Schematic of model pile structure and installation of sensors. (a) Schematic; (b) physical drawing

    Fig. 7. Schematic of model pile structure and installation of sensors. (a) Schematic; (b) physical drawing

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    Test system of sensor experiment

    Fig. 8. Test system of sensor experiment

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    Variation curves of pile driving force and pile end resistance

    Fig. 9. Variation curves of pile driving force and pile end resistance

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    Driving pressure and end resistance of model pile TP1

    Fig. 10. Driving pressure and end resistance of model pile TP1

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    Driving pressure and end resistance of model pile TP2

    Fig. 11. Driving pressure and end resistance of model pile TP2

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    Relationship among pile end resistance, end resistance ratio, and penetration depth of pile body

    Fig. 12. Relationship among pile end resistance, end resistance ratio, and penetration depth of pile body

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    Relationship among side friction, side friction ratio, and penetration depth of pile body

    Fig. 13. Relationship among side friction, side friction ratio, and penetration depth of pile body

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    Axial force of model pile TP1

    Fig. 14. Axial force of model pile TP1

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    Axial force of model pile TP2

    Fig. 15. Axial force of model pile TP2

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    Unit skin friction of model pile TP1

    Fig. 16. Unit skin friction of model pile TP1

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    Unit skin friction of model pile TP2

    Fig. 17. Unit skin friction of model pile TP2

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    • Table 1. Model pile parameters

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      Table 1. Model pile parameters

      Model pileDiameter /mmLength /mmThickness /mmElastic modulus /GPaPoisson ratioForm of pile end
      TP114010003720.3Closed
      TP210010003720.3Closed

    • Table 2. Parameters of FBG demodulator

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      Table 2. Parameters of FBG demodulator

      Sampling frequency /HzDynamic range /nmRange /nmAccuracy /nmResolution /pm
      1±31500--1600±21
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    Jiaxiao Ma, Yonghong Wang, Mingyi Zhang, Xiaoyu Bai, Xueying Liu. Penetration Characteristics of Jacked Piles with Different Pile Diameters Based on Fiber Bragg Grating Sensing Technology[J]. Chinese Journal of Lasers, 2020, 47(5): 0504003

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    Paper Information

    Category: measurement and metrology

    Received: Nov. 27, 2019

    Accepted: Dec. 24, 2019

    Published Online: May. 12, 2020

    The Author Email: Wang Yonghong (hong7986@163.com)

    DOI:10.3788/CJL202047.0504003

    Topics

    laser devices and laser physics
    Lasers and Laser Optics
    Laser physics
    laser manufacturing
    Instrumentation, Measurement and Metrology