首页|Crack width estimate in reinforced concrete with FBG sensor:experimental and numerical analysis
Crack width estimate in reinforced concrete with FBG sensor:experimental and numerical analysis
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A detecting method of investigating the function of crack width versus fiber Bragg grating(FBG)spectrum deformation was proposed.In this paper,the bond-slip model of deformed steel bar in concrete slab was used to calculate the crack width.The stress distributions along optic-fiber grating were extracted by the three-dimensional(3D)finite element method(FEM)and the spectrum deformation of FBG induced by the uneven distribution of the stress was calculated.Ex-periments were carried out with an FBG fixed on the bottom of concrete slab.The crack width and FBG spectrum defor-mation of experimental results were given,and the function of crack width versus wavelength shift of FBG sensor was given also.The proposed technology in this paper could improve the safety of large-scale concrete building by early iden-tification of structural crack.
WANG Lili、Li Jinghu、HAO Jinguang、SAI Yaozhang、LIU Xuefeng
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School of Information and Electrical Engineering,Ludong University,Yantai 264025,China
国家自然科学基金山东省自然科学基金山东省自然科学基金Project of Shandong Province Higher Educational Science and Technol-ogy Program
NETL
NSTL
万方数据
维普
