关键词: 光纤布拉格光栅(FBG);路面温度场测试;路面应变测试;温度传感器;应变传感器

Abstract: To test pavement internal temperature, humidity, stress, strain and other parameters has been the focus and difficulty problem in the field of road tests.With the development of fiber optic sensing technology, it provided a new method for the road testing field.To demonstrate the feasibility that FBG sensing technology applied in the field of road tests, introduced the basic structure of the FBG sensing system, and started at temperature and strain sensor basic principle to summary the outcomes of actual temperature and strain tests that applied FBG sensors.Finally, the application of FBG sensors in other projects, including bridges, tunnels and airport runways is introduced.What''more, analyzed the difficulties and direction of promoting the use of FBG in the road testing projects.

Key words: Fiber Bragg Grating(FBG);pavement temperature field test;pavement strain test;temperature sensor;strain sensor