Experimental Investigate on Pulling out of Anchor Based on Fiber Bragg Grating Monitoring

Abstract

The stability of the anchor plays an important role in slope engineering, mining engineering and construction engineering. Based on the Fiber Bragg Grating (FBG) sensor detection technology, this paper carries out the pulling out the test of the anchor with different tensile strengths. The results show that the center wavelength of the FBG has a good mathematical relationship with its axial strain, and the wavelength change data can be processed into the strain result of the FBG sensor to characterize the strain deformation and stability of the anchor further. What’s more, the measured data from the FBG sensor agrees with the load of the test, and the accuracy of the FBG sensor monitoring data on the anchor is varified.