Detection of Buried Trolley Tracks Using Multichannel 3D Ground Penetrating Radar Tech
Conference: Publication Date: 27 August 2018Testing Method:
Unforeseen conditions are one of the leading causes for costly construction delays on transportation projects. Underground anomalies or unknown utilities when encountered during construction can have a crippling effect on a project’s schedule and budget. Therefore, a properly scoped project must include cost-effective locating and mapping of underground features during a project’s scope development phase. Investigative techniques, such as Ground Penetrating Radar (GPR) technology, are a value-added investment that can result in a more predictable and trouble-free construction environment. As an example, abandoned railroad or trolley tracks can be a troublesome problem for transportation engineers. On many occasions, these linear features are paved over time and records are non-existent, inaccurate or difficult to find. Sometimes, abandoned tracks are found when resurfacing or rehabilitation operations are conducted on existing roads, causing costly project overruns and construction delays.
In this study, a section of municipal road in New Jersey was investigated to identify buried trolley tracks and determine the thickness of asphalt over these tracks. Trolley tracks were known to have existed within the project limits many years ago and been subsequently overlaid with asphalt. However, the exact location, extent and asphalt overlay thickness were unknown.
To shed light on these unknowns, non-destructive GPR testing was employed. The GPR survey was conducted using two ground-coupled (G.C.) systems, a single antenna retrofitted to a push-cart vehicle and a high-density, multichannel trailer system. A limited coring program was carried out to verify and calibrate the GPR findings.
Based on the GPR findings, two sets of trolley tracks were found within the project limits. Core data was used to calibrate the GPR findings and determine the asphalt thickness over the tracks. All findings were combined into a Microstation file with the New Jersey State Plane Coordinate system as a reference and overlaid on existing as-builts. In addition, a georeferenced Google Earth file (.kml format) was prepared separately for easy reference.
- Streetcars in North America, Wikipedia, the free encyclopedia. https://en.wikipedia.org/wiki/Streetcars_in_North_America, accessed 07/12/18.
- Streetsplainer: There’s no trolley, so why the tracks?, Plan Philly website http://planphilly.com/articles/2015/07/03/streetsplainer-there-s-no-trolley-so-why-the-tracks, accessed 07/12/18.
- Daniels, D. J. Ground Penetrating Radar, 2nd Ed. The Institution of Engineering and Technology, London, UK, 2004, 726 pp.
- Maser, K. R., “Feasibility of Using Ground Penetrating Radar (GPR) for Pavements, Utilities, and Bridges” Report SD2005-05 prepared for the South Dakota Department of Transportation (August 2006).
- T. Saarenketo, and T. Scullion, “Ground Penetrating Radar Applications on Roads and Highways,” Research Report No. TX-95/1923-2F, Texas Transportation Institute, College Station (November 1994).
- Celaya, M., Schumacher, T., Tabrizi, K., Bitsko, G. and Shokouhi, P. “Field Verification of Non-destructive Testing Technologies for Condition Assessment of Concrete Bridge Decks: A Case Study.” NDE / NDT for Highways and Bridges. The American Society for Nondestructive Testing (ASNT) Annual Conference, Structural Materials Technology (SMT), 2014.
- Celaya, Manuel, Nazarian, Soheil, Rao, Chetana and Von Quintus, Harold. “Delamination Detection of Asphalt Pavements with Nondestructive Testing Devices (11-1487).” Paper accepted for publication and presentation at the 90th Annual Transportation Research Board Meeting in Washington, DC, 2011.
- Hyslip, J., Smith, S., Olhoeft, G., and Selig, E.. (2003). “Assessment of Railway Track Substructure Condition Using Ground Penetrating Radar.” Proc. of the 2003 Annual Conference of AREMA, Chicago.
- Fateh, M. “Non-Destructive Evaluation of Railway Track Using Ground Penetrating Radar,” U.S. Department Of Transportation, Federal Railroad Administration, RR05-06, October 2005.
- Birken, R., Miller, D. E., Burns, M., Albats, P., Casadonte, R., Deming, R., Derubeis, T., Hansen, T. and Oristaglio, M. “Efficient Large-Scale Underground Utility Mapping Using a New Multichannel Ground- Penetrating Imaging Radar System,” Proceedings of SPIE - The International Society for Optical Engineering · April 2002.
- Fontul, S., Fortunato, E., De Chiara, F., Burrinha, R., and Baldeiras, M. “Railways Track Characterization Using Ground Penetrating Radar.” Advances in Transportation Geotechnics 3. The 3rd International Conference on Transportation Geotechnics (ICTG 2016), Volume 143, 2016, Pages 1193– 1200.
- Al-Qadi, I. L., Xie, W., Jones, D. L., and Roberts, R. (2010), “Development of a Time– Frequency Approach to Quantify Railroad Ballast Fouling Condition using Ultra-Wide Band Ground-Penetrating Radar Data;” International Journal of Pavement Engineering, 11(4), 269– 279.
- Bahri, A., S., Syaifuddin, F., and Pandu, J., G. N. R. “Delineation of Buried Old Tram Tracks of Surabaya City with Ground Penetrating Radar Technology.” Joint Convention Balikpapan, HAGI-IAGI-IAFMI-IATMI, 2015.
- Hansen, T., Oristaglio, M., Miller, D., Burns, M., Derubeis, A., Albats, P., Casadonte, R., Deming, R., Birken, R., and Haldorsen, J. “Efficient Large-Scale Underground Utility Mapping in New York City Using a Multichannel Ground-Penetrating Imaging Radar System.” Proceedings of SPIE - The International Society for Optical Engineering 4758, April 2002.
- Celaya, M., Novo, A., Sray, M., Tabrizi, K., and Boi, E. “Utility Mapping Using Multichannel 3D GPR Array Technology.” Prepared for the 67th Highway Geology Symposium, July 11-14, 2016.
95 Page Views
0 PDF Downloads
0 Facebook Shares