scholarly journals STUDY ON IMPROVEMENTS OF EVALUTATION AND CALCLATION OF TUNNEL-LINING CRACK INDEX (TCI) FOR ASSESS THE HEALTH MONITORING OF TUNNEL LINING

2019 ◽  
Vol 75 (1) ◽  
pp. 1-6
Author(s):  
Ayaka KITAMURA ◽  
Shingo MORIMOTO ◽  
Masato SHINJI
Keyword(s):  
Health Monitoring ◽  
Tunnel Lining ◽  
Crack Index

scholarly journals POSSIBILITY ON SUBSTITUTION CLOSE VISUAL INSPECTION FOR IMAGING TECHNOLOGY TO TUNNEL LINING HEALTH MONITORING

2020 ◽  
Vol 76 (1) ◽  
pp. 62-78
Author(s):  
Shinobu KAISE ◽  
Tetsuo ITO ◽  
Yoshikatsu MAEDA ◽  
Hiroshi YAGI ◽  
Kouki MAEDA ◽  
...  
Keyword(s):  
Health Monitoring ◽  
Visual Inspection ◽  
Tunnel Lining ◽  
Imaging Technology

scholarly journals EVALUATION METHOD FOR SOUNDNESS OF LINING CONCRETE BY TUNNEL-LINING CRACK INDEX

2009 ◽  
Vol 65 (1) ◽  
pp. 11-16 ◽  
Author(s):  
Takaaki YAMADA ◽  
Nobuo SANO ◽  
Koji BABA ◽  
Yoshiyuki SHIGETA ◽  
Isamu YOSHITAKE ◽  
...  
Keyword(s):  
Evaluation Method ◽  
Tunnel Lining ◽  
Crack Index

scholarly journals Study on the Correlation of Vibration Properties and Crack Index in the Health Assessment of Tunnel Lining

2017 ◽  
Vol 2017 ◽  
pp. 1-9 ◽  
Author(s):  
Xuezhen Wu ◽  
Yujing Jiang ◽  
Kusaba Masaya ◽  
Tetsuya Taniguchi ◽  
Takahide Yamato
Keyword(s):  
Visual Inspection ◽  
Health Assessment ◽  
Tunnel Lining ◽  
New Method ◽  
Ambient Vibration ◽  
Ambient Vibration Test ◽  
Inspection Method ◽  
Vibration Properties ◽  
Average Spectrum ◽  
Crack Index

This paper examines the correlation of vibration properties and crack index of tunnel lining in evaluating risk of collapsing. The visual inspection method, which was widely used, was not reliable enough as the stability of tunnel lining was influenced by the voids and the cracks that were invisible. A new method for the health assessment of tunnel lining was proposed, which can evaluate the whole structural condition according to the vibration properties of tunnel lining. A series of field tests were conducted to evaluate the validity of this new method and to make a comparative analysis with the visual inspection test results. The resultant average spectrum (RAS) of tunnel lining was identified according to the acceleration data of ambient vibration test of Hidake Tunnel in Japan. The tunnel lining crack index (TCI) was also obtained by digital visual inspection test. The correlation between the vibration characteristics and the crack index of tunnel lining was confirmed. However, the voids and the cracks on the inside of the lining were neglected in visual inspection test, which could pose a serious threat to tunnel safety. The vibration measurements by seismometer are an effective way to evaluate the global stability of tunnel lining.

Health Monitoring Measure

2007 ◽  
Author(s):  
Katherine Harris Abbott ◽  
Eleanor Palo Stoller ◽  
Julia Hannum Rose
Keyword(s):  
Health Monitoring
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