Title :
Non-destructive evaluation of shield tunnel condition using GPR and 3D laser scanning
Author :
Xiongyao Xie ; Zeng, Chenchao
Author_Institution :
Dept. of Geotech. Eng., Tongji Univ., Shanghai, China
Abstract :
Shield tunnel requires routine inspections for construction safety and quality control. The rapidness, non-destructiveness and high precision of GPR and 3D laser scanning technology enable them to be widely and increasingly used in tunnel detection. The evaluation of Yingbin No.3 Road Tunnel is presented in this paper to illustrate the application of GPR in the inspection on thickness of grouting layer behind the segment and 3D laser scanning technology in the testing on surface situation of tunnel liner. The advantages and limitations of the above-mentioned two methods are discussed in the paper and suggestions are provided.
Keywords :
ground penetrating radar; inspection; laser beam applications; nondestructive testing; quality control; safety; structural engineering; tunnels; 3D laser scanning technology; GPR; Yingbin No 3 road tunnel; construction safety; grouting layer; nondestructive evaluation; quality control; routine inspection; shield tunnel condition; surface situation; tunnel detection; tunnel liner; Conferences; Ground penetrating radar; 3D laser scanning; GPR; non-destructive evaluation; shield tunnel;
Conference_Titel :
Ground Penetrating Radar (GPR), 2012 14th International Conference on
Conference_Location :
Shanghai
Print_ISBN :
978-1-4673-2662-9
DOI :
10.1109/ICGPR.2012.6254913
