Jiaxiao Ma, Yonghong Wang, Mingyi Zhang, Xiaoyu Bai, Xueying Liu. Experimental Study on Penetration Characteristics of Open Pipe Pile Based on Fiber Bragg Grating Sensing Technology[J]. Laser & Optoelectronics Progress, 2020, 57(13): 130602
- Laser & Optoelectronics Progress
- Vol. 57, Issue 13, 130602 (2020)
Fig. 1. Schematic diagram of FBG
Fig. 2. Schematic diagram of grating signal demodulation
Fig. 3. Sensitized miniature FBG strain sensor
Fig. 4. Calibration fitting curves of FBG sensor wavelength. (a) Sensor 1; (b) sensor 2
Fig. 5. Aluminum detachable double-wall open model pipe pile. (a) Inner and outer tube of the model pipe pile; (b) pile tip of the model pipe pile
Fig. 6. Schematic diagram of open model pipe pile structure and sensor position
Fig. 7. Variation curve of model pipe pile sinking resistance
Fig. 8. Proportion curve of model pipe pile sinking resistance
Fig. 9. Variation curve of the axial force on inner and outer walls of model pipe pile. (a) Inner wall; (b) outer wall
Fig. 10. Variation curve of the unit side friction resistance on inner and outer walls of model pipe pile. (a) Inner wall; (b) outer wall
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Table 1. Calibration result of FBG sensor
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Table 2. Parameter of model pipe pile
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