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논문 기본 정보

자료유형
학술저널
저자정보
White, Joshua (Zachry Department of Civil Engineering, Texas A&M University) Hurlebaus, Stefan (Zachry Department of Civil Engineering, Texas A&M University) Shokouhi, Parisa (Federal Institute for Material Research and Testing [BAM]) Wittwer, Andreas (SPACETEC Datengewinnung GmbH) Wimsatt, Andrew (Texas A&M Transportation Institute, Texas A&M University System)
저널정보
테크노프레스 Structural monitoring and maintenance Structural monitoring and maintenance 제1권 제2호
발행연도
2014.1
수록면
197 - 211 (15page)

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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.

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