DOI QR코드

DOI QR Code

Noncontact techniques for monitoring of tunnel linings

  • 투고 : 2014.02.04
  • 심사 : 2014.06.16
  • 발행 : 2014.06.25

초록

An investigation of tunnel linings is performed at two tunnels in the US using complimentary noncontact techniques: air-coupled ground penetrating radar (GPR), and a vehicle-mounted scanning system (SPACETEC) that combines laser, visual, and infrared thermography scanning methods. This paper shows that a combination of such techniques can maximize inspection coverage in a comprehensive and efficient manner. Since ground-truth is typically not available in public tunnel field evaluations, the noncontact techniques used are compared with two reliable in-depth contact nondestructive testing methods: ground-coupled GPR and ultrasonic tomography. The noncontact techniques are used to identify and locate the reinforcement mesh, structural steel ribs, internal layer interfaces, shallow delamination, and tile debonding. It is shown that this combination of methods can be used synergistically to provide tunnel owners with a comprehensive and efficient approach for monitoring tunnel lining conditions.

키워드

참고문헌

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피인용 문헌

  1. Reducing Thermal Reflections for Infrared Thermography Applications on Tunnel Liners with Reflective Finishes pp.2169-4052, 2018, https://doi.org/10.1177/0361198118780711
  2. Reducing Thermal Reflections for Infrared Thermography Applications on Tunnel Liners with Reflective Finishes pp.2169-4052, 2018, https://doi.org/10.1177/0361198118783572
  3. 정밀안전진단 결과를 활용한 NATM (철근)의 라이닝 결함 종류별 발생원인 및 분석 - Part I vol.21, pp.1, 2014, https://doi.org/10.9711/ktaj.2019.21.1.001
  4. Quantitative Attribute Analyses with Ground Penetrating Radar for Infrastructure Assessments and Structural Health Monitoring vol.19, pp.7, 2014, https://doi.org/10.3390/s19071637