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
- Acta Optica Sinica
- Vol. 40, Issue 12, 1206004 (2020)
Fig. 1. Structure diagram of the low-temperature-sensitive FBG strain sensor
Fig. 2. Structure diagram of FBG temperature sensor
Fig. 3. Schematic diagram of strain calibration
Fig. 4. Strain calibration curve of FBG strain sensor
Fig. 5. Temperature calibration curve of FBG strain sensor
Fig. 6. Temperature calibration curve of FBG temperature sensor
Fig. 7. sensors installation
Fig. 8. Shallow groove filled with epoxy resin
Fig. 9. Schematic diagram of sensor installation position and static pressure pile
Fig. 10. Temperature difference versus time
Fig. 11. TP1 penetration resistance curve with depth
Fig. 12. TP2 penetration resistance curve with depth
Fig. 13. Axial force of pile TP1
Fig. 14. Axial force of pile TP2
Fig. 15. Unit side friction resistance of pile TP1
Fig. 16. Unit side friction resistance of pile TP2
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Table 1. Parameters of soils
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Table 2. Parameters of FBG demodulator
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