Online monitoring of highway bridge construction using fiber Bragg grating sensors

The civil engineering community is becoming increasingly interested in monitoring structural behavior and in assessing its corresponding integration. In this paper, fiber Bragg grating (FBG) sensors were installed to investigate the in situ characteristics of the hydration progress period and the curing process of highway bridge construction. Moreover, the security and serviceability of a bridge can be changed by material proprieties such as shrinkage and creep, which is correlated with the prestressing strain and settlement during the support frame removal. The response and effectiveness of the schedule at every step during the prestressing process, and during the support frame removal, were also examined. It appeared that an FBG sensor was clearly shown to be a smart sensor candidate for function integration and response of a highway bridge during both its construction and service life.