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Acta Optica Sinica, Volume. 40, Issue 12, 1206004(2020)

Static-Pressure Penetration Field Test of PHC Pipe Pile Based on Fiber Bragg Grating Sensor

Jiaxiao Ma1, Yonghong Wang1,2、*, Mingyi Zhang1,2, Xiaoyu Bai1,2, and Songkui Sang1
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 (18)
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    References (22)
    Cited By (3)
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    Figures & Tables(18)
    Structure diagram of the low-temperature-sensitive FBG strain sensor

    Fig. 1. Structure diagram of the low-temperature-sensitive FBG strain sensor

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    Structure diagram of FBG temperature sensor

    Fig. 2. Structure diagram of FBG temperature sensor

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    Schematic diagram of strain calibration

    Fig. 3. Schematic diagram of strain calibration

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    Strain calibration curve of FBG strain sensor

    Fig. 4. Strain calibration curve of FBG strain sensor

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    Temperature calibration curve of FBG strain sensor

    Fig. 5. Temperature calibration curve of FBG strain sensor

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    Temperature calibration curve of FBG temperature sensor

    Fig. 6. Temperature calibration curve of FBG temperature sensor

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    sensors installation

    Fig. 7. sensors installation

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    Shallow groove filled with epoxy resin

    Fig. 8. Shallow groove filled with epoxy resin

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    Schematic diagram of sensor installation position and static pressure pile

    Fig. 9. Schematic diagram of sensor installation position and static pressure pile

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    Temperature difference versus time

    Fig. 10. Temperature difference versus time

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    TP1 penetration resistance curve with depth

    Fig. 11. TP1 penetration resistance curve with depth

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    TP2 penetration resistance curve with depth

    Fig. 12. TP2 penetration resistance curve with depth

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    Axial force of pile TP1

    Fig. 13. Axial force of pile TP1

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    Axial force of pile TP2

    Fig. 14. Axial force of pile TP2

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    Unit side friction resistance of pile TP1

    Fig. 15. Unit side friction resistance of pile TP1

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    Unit side friction resistance of pile TP2

    Fig. 16. Unit side friction resistance of pile TP2

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    • Table 1. Parameters of soils

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      Table 1. Parameters of soils

      Soil typeSoildescriptionDepth /mWatercontent /%Unitweight /(kN·m-2)Void ratioCohesion /kPaInternalfrictionangle /(°)Compressionmodulus /MPa
      FillSoft plastic clay0.9-5.330.618.50.86713.86.84.1
      Silty soil A1Loose densesilty soil0.3-2.528.818.60.8038.720.18.1
      Silty clay B1Loose densesilty soil0.3-1.131.518.30.8916.97.34.6
      Silty clay B2Soft plastic clay0.3-1.930.918.30.87617.67.44.8
      Silty soil A2Medium densesilty soil0.7-4.028.318.70.7948.7218.7
      Silty clay B3Soft plastic toflow plastic clay2.6-4.631.718.30.89517.56.84.6
      Silty soil A3Medium densesilty soil0.8-3.828.318.70.79310.320.610.2

    • Table 2. Parameters of FBG demodulator

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      Table 2. Parameters of FBG demodulator

      Sampling frequency /s-1Dynamic range /nmRange /nmAccuracy /nmResolution /pm
      1±31500--1600±21
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    Jiaxiao Ma, Yonghong Wang, Mingyi Zhang, Xiaoyu Bai, Songkui Sang. Static-Pressure Penetration Field Test of PHC Pipe Pile Based on Fiber Bragg Grating Sensor[J]. Acta Optica Sinica, 2020, 40(12): 1206004

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    Paper Information

    Category: Fiber Optics and Optical Communications

    Received: Mar. 6, 2020

    Accepted: Mar. 23, 2020

    Published Online: Jun. 3, 2020

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

    DOI:10.3788/AOS202040.1206004

    Topics

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