Study on Pull-out Test of Anchor Bolt Based on FBG-BOTDA Combined Sensing Technology
Abstract：FBG and PPP-BOTDA are applied to anchor bolt pull-out test in the indoor together, and the test results are verified by ANSYS numerical simulation. The results indicate that the axial stress of bolt under different pull-out loads measured by FBG and BOTDA sensors shows a"negative exponential distribution", and the influence range of load is mainly concentrated within 55 cm from the orifice, which is basically consistent with the results obtained by numerical simulation; FBG-BOTDA combined sensing technology can not only accurately obtain the stress condition of key points, but also comprehensively monitor the stress area and stress distribution of the bolt.
Keywords：FBG-BOTDA technologyanchor bolt pull-out testnumerical simulationaxial stressanchoring depth
Publication Date：2019-10-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：4( 62-65 )