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Estimation of Shape of Voids behind Concrete Tunnel Linings Using Radar of Three Dipole Antenna Type
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 Title & Authors
Estimation of Shape of Voids behind Concrete Tunnel Linings Using Radar of Three Dipole Antenna Type
Park Seok-Kyun;
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 Abstract
The presence of voids behind tunnel linings is very likely to result in settlement or structural collapse. One proposed method of detecting such voids by non-destructive method is radar. More than effectively judging the existence of voids behind tunnel linings, this study aims to develop the analysis algorithm of radar capable of estimation of the shape of specific voids. To acquire directional information and estimate the shape of three-dimensional voids, the radar of three-dipole antenna type is used. As a foundation to this ongoing research, an investigation of microwave polarization methods using three-dipole antenna carried out with various void orientations and void geometries. As a result, it is clarified that the response of four microwave polarization modes depends on void geometry and thus there is a possibility of identifying the geometry and orientation (the shape) of specific voids using radar of three-dipole antenna type.
 Keywords
non-destructive test;void shape;concrete tunnel lining;radar;
 Language
Korean
 Cited by
1.
터널 덕트슬래브의 종방향 균열에 대한 원인 분석 사례 연구,박성우;박승수;황인백;차철준;

한국구조물진단유지관리공학회 논문집, 2012. vol.16. 5, pp.19-28 crossref(new window)
1.
A Case Study on Cause Analysis for Longitudinal Crack of Duct Slab in Tunnel, Journal of the Korea institute for structural maintenance and inspection, 2012, 16, 5, 19  crossref(new windwow)
 References
1.
Moore, J. R., Echard, J. D., and Neill, C. G., 'Radar Detection of Voids under Concrete Highways,' IEEE International Radar Conference, 1980, pp. 131-135

2.
Kovacs, A. and Morey, R.M., Detection of Cavities Under Concrete Pavement, CRREL Report 83-18, 1983, pp.1-41

3.
Moore, J. R. and Echard, J. D., 'Radar Detection of Voids under Concrete Hiways,' IEEE International Radar Conference, 1980, pp.131-135

4.
Clemena, G. G., Sprinkel, M. M., and Robert, R. Long, Use of Ground-Penetrating Radar for Detective Voids Under a Jointed Concrete Pavement, Transportation Research Record 1109, pp.1-10

5.
Bertram, C.L., et.al, Feasibility Study for Rapid Evaluation of Airfield Pavements, AFWL-TR-71-178, 1974, pp.1-94

6.
Moore, et. al, Radar Detection of Voids under Concrete highways, Georgia Institute of Technology, NCHRP 10-14, 1980

7.
Steinuray, Echart, and Lake, Locating Voids Beneath Pavement Using Pulsed Electromagnetic Waves, Georgia Inst, of Tech., 1981

8.
Murasawa, K., Mshizaki, H., Jyomuta, C., Kimura, N., and Obara, H., 'Subsurface Radar with Three Antenna Elements Based on Scattering Theory', Mchuizousengibo, Japan, No.152, 1994

9.
Olver, A. D., et al., 'Portable FM-CW Radar for Locating Buried Pipes,' Proc Internationl Conference Radar-82, 1982, pp.413-418

10.
Ueno, K. and Osumi, N., 'Underground Pipe Detection based on Mcrowave polarization Effect,' Proc ISNCR, 1984, pp.673-678

11.
Park, S. K. and Uomoto, T., 'Radar image Processing for Detection of Shape of Voids and Location of Reinforcing Bars on or under reinforced concrete,' International Conference Non-Destructive Testing in Civil Engineering (NDT-CE '97) Proc, Vol. 1 and 2, Liverpool, UK, 1997