Abstract
In order to monitor the bridge cable tension, a new intelligent GFRP-OFBG sensor is introduced. The temperature and strain sensing properties of GFRP-OFBG sensor are studied through the calibration experiment. The limit strain of GFRP-OFBG sensrs with different diameters is compared. It is verified that the GFRP-OFBG sensors with diameter of 7 mm are suitable for the application of the bridge cables tension monitoring, and its limit strain is about 8000. Finally, the installation of GFRP-OFBG sensors have been explored in the arch bridge tie cables. The tie cable tensile process is successfully monitored utilizing GFRP-OFBG intelligent sensors in Sichuan E Bian Dadu river. Based on the monitoring data for a year, the tie cable tensile result and the operating conditions have been verified.
| Original language | English |
|---|---|
| Pages (from-to) | 1294-1297 |
| Number of pages | 4 |
| Journal | Guangdianzi Jiguang/Journal of Optoelectronics Laser |
| Volume | 20 |
| Issue number | 10 |
| State | Published - Oct 2009 |
| Externally published | Yes |
Keywords
- Arch bridge tie cable
- Cable tension
- GFRP-OFBG intelligent sensors
- Health monitoring
- Optical fiber Bragg grating (OFBG)
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