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 exp...