Quantitative Evaluation of Tunnel Lining Voids by Acoustic Spectrum Analysis

In this paper, a quantitative void detection method based on acoustic spectrum analysis is proposed to estimate the inner state of tunnel linings. Comparativeanalysesof time- and frequency-domain signals for different sizes of void are studied via numerical simulation and experimental testing. In order to realize quantitative evaluation of void size, a parameter based on frequency-domain analysis, called the spectrum density ratio (α), is extracted to estimate lining quality. Parameter α is calculated by analysing the spectrum density in different frequency bands. The results show that α increases linearly with void size and can be used to detect voids in linings. The method effectively characterises voids in tunnel linings, thereby allowing the engineering of stronger structures.

• Record URL:
  • https://doi.org/10.1016/j.conbuildmat.2019.116762
• Record URL:
  • http://www.sciencedirect.com/science/article/pii/S0950061819321804
• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/09500618
• Supplemental Notes:
  • © 2019 Elsevier Ltd. All rights reserved. Abstract reprinted with permission of Elsevier.
• Authors:
  • Tang, Hai-xiang
  • Long, Shi-guo
  • Li, Ting
• Publication Date: 2019-12-20

Language

• English

Media Info

• Media Type: Web
• Features: Figures; Photos; References; Tables;
• Pagination: 116762
• Serial:
  • Construction and Building Materials
  • Volume: 228
  • Issue Number: 0
  • Publisher: Elsevier
  • ISSN: 0950-0618
  • Serial URL: http://www.sciencedirect.com/science/journal/09500618?sdc=1

Subject/Index Terms

• TRT Terms: Acoustic emission tests; Air voids; Frequency domain analysis; Spectrum analysis; Tunnel lining
• Subject Areas: Bridges and other structures; Highways; Maintenance and Preservation;

Filing Info

• Accession Number: 01719701
• Record Type: Publication
• Files: TRIS
• Created Date: Oct 22 2019 2:38PM