Investigation of voids and cavities in bored tunnels using GPR

Karlovšek, Jurij; Scheuermann, A.; Willimas, David J.

doi:10.1109/icgpr.2012.6254916

Cited by 21 publications

(8 citation statements)

References 10 publications

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“…There are successful works in detecting thicknesses of both lining and backfill grouting layers behind the concrete lining (Liu et al 2012), as well as to identify defects in lining such as voids and cracks (Karlovšek et al 2012). Additional information can be obtained to define rebar geometry, including corrosion detection (Xiang et al 2013).…”

Section: Tunnelsmentioning

confidence: 98%

Applications of GPR in Association with Other Non-destructive Testing Methods in Surveying of Transport Infrastructures

Solla

Lorenzo

Martínez-Sánchez

et al. 2015

Civil Engineering Applications of Ground Penetrating Radar

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Preservation and maintenance of transport infrastructure is a global concern that affects social and economic development in all countries. During the last decades, there has been a continuous increase in the use of non-destructive testing (NDT) applied to many aspects related to civil engineering field. Ground Penetrating Radar (GPR) has become an established method of inspection. This paper presents a compilation of works in the frame of the applications of GPR and other NDT methods in the evaluation of transport infrastructures. Published works in roads and pavements, concrete and masonry structures, and tunnel testing are mentioned. It has been demonstrated that such methods have significantly benefited the procedures for inspection and also, successfully solved some of the limitations of traditional methods.

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Section: Tunnelsmentioning

confidence: 98%

Applications of GPR in Association with Other Non-destructive Testing Methods in Surveying of Transport Infrastructures

Solla

Lorenzo

Martínez-Sánchez

et al. 2015

Civil Engineering Applications of Ground Penetrating Radar

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show abstract

“…The GPR method was also applied in combination with other NDT methods in tunnel diagnostics. Karlovšek et al [333] include an overview of the non-destructive methods used for possible testing bored tunnels' integrity (such as GPR, impact-echo, ultrasounds, etc. ), in which their pros and cons are briefly discussed.…”

Section: Tunneling Inspectionmentioning

confidence: 99%

A Review of GPR Application on Transport Infrastructures: Troubleshooting and Best Practices

2021

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The non-destructive testing and diagnosis of transport infrastructures is essential because of the need to protect these facilities for mobility, and for economic and social development. The effective and timely assessment of structural health conditions becomes crucial in order to assure the safety of the transportation system and time saver protocols, as well as to reduce excessive repair and maintenance costs. Ground penetrating radar (GPR) is one of the most recommended non-destructive methods for routine subsurface inspections. This paper focuses on the on-site use of GPR applied to transport infrastructures, namely pavements, railways, retaining walls, bridges and tunnels. The methodologies, advantages and disadvantages, along with up-to-date research results on GPR in infrastructure inspection are presented herein. Hence, through the review of the published literature, the potential of using GPR is demonstrated, while the main limitations of the method are discussed and some practical recommendations are made.

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“…Imaging below ground objects are vital in military, civilian, and commercial applications including tunnel detection and natural resource exploration [1] [2]. Current imaging below ground technology can detect metallic, and nonmetallic objects that have higher conductivity compared to soil [3].…”

Section: Introductionmentioning

confidence: 99%

A fast matched-filtered approach for GPR

Guzel

Almutiry

Tran

et al. 2015

2015 National Aerospace and Electronics Conference (NAECON)

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This paper propose a fast, matched-filtered based imaging algorithm to detect below ground object To image below ground objects, a set of distributed transmitters and receivers are placed above the ground, or slightly buried. These transmitters radiate waveforms into the subsurface. The resulting wavefront impinges upon underground objects, scattering electromagnetic energy in all directions. Receivers collects the reflected electromagnetic signal, retrieve the phasor of the scattered signals, and transmit this information to systems for post-processing. After applying adaptive signal processing algorithms to collected data, an image of the buried objects can be reconstructed. Reconstructed 2D of buried objects are computed via numerical discretization and match filtering techniques. Match filtering technique is faster and it reduces computational power that required to process the collected data. The matched-filtered approach is easier to implement as compared to matrix inversion. Results from simulation analysis are used to validate this method.

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Investigation of voids and cavities in bored tunnels using GPR

Cited by 21 publications

References 10 publications

Applications of GPR in Association with Other Non-destructive Testing Methods in Surveying of Transport Infrastructures

Applications of GPR in Association with Other Non-destructive Testing Methods in Surveying of Transport Infrastructures

A Review of GPR Application on Transport Infrastructures: Troubleshooting and Best Practices

A fast matched-filtered approach for GPR

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