Kaokui Chen, Yuanfeng Li, Ciming Zhou, Dian Fan. Bridge Strain Measurement Based on Weak Fiber Bragg Grating Array[J]. Laser & Optoelectronics Progress, 2022, 59(7): 0706003
- Laser & Optoelectronics Progress
- Vol. 59, Issue 7, 0706003 (2022)
Fig. 1. Experimental platform for force-sensitive performance detection of the wFBG
Fig. 2. Schematic diagram of installation of the wFBG
Fig. 3. Variation curve of the change of wFBG center wavelength with strain during the loading process
Fig. 4. Variation curve of the change of wFBG center wavelength with strain during the unloading process
Fig. 5. Schematic diagram of section of 1.5 m simply supported T beam
Fig. 6. Schematic diagram of cross section points of 1.5 m simply supported T beam
Fig. 7. Strain-time relationship diagram of the wFBG at the top of 1.5 m simply supported T beam
Fig. 8. Strain-time relationship diagram of the wFBG at the bottom of 1.5 m simply supported T beam
Fig. 9. Strain-time relationship diagram of the wFBG of the section 2 of 1.5 m simply supported T-beam. (a) Left side of section 2; (b) right side of section 2
Fig. 10. Schematic diagram of section of 4.5 m continuous T beam
Fig. 11. Schematic diagram of cross section points of 4.5 m continuous T beam
Fig. 12. Strain-time relationship diagram of the wFBG on the left side of the top of 4.5 m continuous T beam
Fig. 13. Strain-time relationship diagram of the wFBG on the right side of the bottom of 4.5 m continuous T beam
Fig. 14. Strain-time relationship diagram of the wFBG of the section 4 of 4.5 m continuous T beam. (a) Left side of section 4; (b) right side of section 4
Fig. 15. Schematic diagram of section of 9.5 m variable cross section continuous T beam
Fig. 16. Schematic diagram of cross section points of 9.5 m variable cross section continuous T beam
Fig. 17. Strain-time relationship diagram of the wFBG on the left side of the top of 9.5 m variable cross section continuous T beam. (a) Section of 9.5 m beam with equal height section; (b) section of 9.5 m beam with variable height section and mid fulcrum
Fig. 18. Strain-time relationship diagram of the wFBG on the right side of the bottom of 9.5 m variable cross section continuous T beam. (a) Section of 9.5 m beam with equal height section; (b) section of 9.5 m beam with variable height section
Fig. 19. Time-strain relationship diagram of wFBG No. 1 of 10 sections. (a) Section 1-3, 8-10; (b) section 4-7
Fig. 20. Time-strain relationship diagram of part of wFBG in 10 sections. (a) Section 1-3, 8-10; (b) section 4-7
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