Characterization of railroad track substructures using dynamic and static cone penetrometer

W. T. Hong; S. Kang; J. S. Lee; Y. H. Byun; C. Y. Choi

Characterization of railroad track substructures using dynamic and static cone penetrometer

W. T. Hong, S. Kang, J. S. Lee, Y. H. Byun, C. Y. Choi

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract

As deteriorated track substructures cannot produce enough bearing capacity against the load of the train and may lead to serious accidents, an accurate investigation of the track substructures is necessary for proper repair and maintenance. In this study, a dynamic and static cone penetrometer (DSCP) for characterization of track substructures is developed. The DSCP is dynamically penetrated into ballast layer using a 118 N drop hammer and statically pushed into subgrade. The DSCP consists of an outer rod for the dynamic penetration into the ballast layer and inner rod for the static penetration into the subgrade. At the head of the outer rod, an energy-monitoring module is installed to obtain the transferred energy from the drop hammer and two load cells are installed to obtain the cone tip and friction resistances during the static penetration. As a pilot test, track substructures are simulated in a chamber and the DSCP penetration test is conducted and two field tests are conducted in order to investigate the applicability of the DSCP. From the DSCP tests, the energy corrected dynamic cone penetration index for the ballast layer and static penetration resistances (cone tip and friction resistances) are obtained for the subgrade. This study suggests that the DSCP may be a useful tool for the characterization of railroad track substructures.

Original language	English
Title of host publication	Proceedings of the 5th International Conference on Geotechnical and Geophysical Site Characterisation, ISC 2016
Editors	Hugo E. Acosta-Martinez, Barry M. Lehane, Richard Kelly
Publisher	Australian Geomechanics Society
Pages	707-710
Number of pages	4
ISBN (Electronic)	9780994626110
Publication status	Published - 2016
Event	5th International Conference on Geotechnical and Geophysical Site Characterisation, ISC 2016 - Gold Coast, Australia Duration: 2016 Sept 5 → 2016 Sept 9

Publication series

Name	Proceedings of the 5th International Conference on Geotechnical and Geophysical Site Characterisation, ISC 2016
Volume	1

Other

Other	5th International Conference on Geotechnical and Geophysical Site Characterisation, ISC 2016
Country/Territory	Australia
City	Gold Coast
Period	16/9/5 → 16/9/9

Bibliographical note

Publisher Copyright:
© 2016 Australian Geomechanics Society.

ASJC Scopus subject areas

Geotechnical Engineering and Engineering Geology
Geophysics
Soil Science

Cite this

Hong, W. T., Kang, S., Lee, J. S., Byun, Y. H., & Choi, C. Y. (2016). Characterization of railroad track substructures using dynamic and static cone penetrometer. In H. E. Acosta-Martinez, B. M. Lehane, & R. Kelly (Eds.), Proceedings of the 5th International Conference on Geotechnical and Geophysical Site Characterisation, ISC 2016 (pp. 707-710). (Proceedings of the 5th International Conference on Geotechnical and Geophysical Site Characterisation, ISC 2016; Vol. 1). Australian Geomechanics Society.

Characterization of railroad track substructures using dynamic and static cone penetrometer. / Hong, W. T.; Kang, S.; Lee, J. S. et al.
Proceedings of the 5th International Conference on Geotechnical and Geophysical Site Characterisation, ISC 2016. ed. / Hugo E. Acosta-Martinez; Barry M. Lehane; Richard Kelly. Australian Geomechanics Society, 2016. p. 707-710 (Proceedings of the 5th International Conference on Geotechnical and Geophysical Site Characterisation, ISC 2016; Vol. 1).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Hong, WT, Kang, S , Lee, JS, Byun, YH & Choi, CY 2016, Characterization of railroad track substructures using dynamic and static cone penetrometer. in HE Acosta-Martinez, BM Lehane & R Kelly (eds), Proceedings of the 5th International Conference on Geotechnical and Geophysical Site Characterisation, ISC 2016. Proceedings of the 5th International Conference on Geotechnical and Geophysical Site Characterisation, ISC 2016, vol. 1, Australian Geomechanics Society, pp. 707-710, 5th International Conference on Geotechnical and Geophysical Site Characterisation, ISC 2016, Gold Coast, Australia, 16/9/5.

Hong WT, Kang S , Lee JS, Byun YH, Choi CY. Characterization of railroad track substructures using dynamic and static cone penetrometer. In Acosta-Martinez HE, Lehane BM, Kelly R, editors, Proceedings of the 5th International Conference on Geotechnical and Geophysical Site Characterisation, ISC 2016. Australian Geomechanics Society. 2016. p. 707-710. (Proceedings of the 5th International Conference on Geotechnical and Geophysical Site Characterisation, ISC 2016).

Hong, W. T. ; Kang, S. ; Lee, J. S. et al. / Characterization of railroad track substructures using dynamic and static cone penetrometer. Proceedings of the 5th International Conference on Geotechnical and Geophysical Site Characterisation, ISC 2016. editor / Hugo E. Acosta-Martinez ; Barry M. Lehane ; Richard Kelly. Australian Geomechanics Society, 2016. pp. 707-710 (Proceedings of the 5th International Conference on Geotechnical and Geophysical Site Characterisation, ISC 2016).

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AB - As deteriorated track substructures cannot produce enough bearing capacity against the load of the train and may lead to serious accidents, an accurate investigation of the track substructures is necessary for proper repair and maintenance. In this study, a dynamic and static cone penetrometer (DSCP) for characterization of track substructures is developed. The DSCP is dynamically penetrated into ballast layer using a 118 N drop hammer and statically pushed into subgrade. The DSCP consists of an outer rod for the dynamic penetration into the ballast layer and inner rod for the static penetration into the subgrade. At the head of the outer rod, an energy-monitoring module is installed to obtain the transferred energy from the drop hammer and two load cells are installed to obtain the cone tip and friction resistances during the static penetration. As a pilot test, track substructures are simulated in a chamber and the DSCP penetration test is conducted and two field tests are conducted in order to investigate the applicability of the DSCP. From the DSCP tests, the energy corrected dynamic cone penetration index for the ballast layer and static penetration resistances (cone tip and friction resistances) are obtained for the subgrade. This study suggests that the DSCP may be a useful tool for the characterization of railroad track substructures.

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Characterization of railroad track substructures using dynamic and static cone penetrometer

Abstract

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ASJC Scopus subject areas

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