All Issue

2022 Vol.38, Issue 11 Preview Page
A Study on Non-contact Penetration and Rebound Measurement Device for Quality Control in Driven Piles

말뚝 시공관리를 위한 비접촉식 관입량 측정장치 활용에 관한 연구

Seunghwan Seo1
,
Juhyong Kim2
,
Changho Choi3
,
Moonkyung Chung4*
서 승환1
,
김 주형2
,
최 창호3
,
정 문경4*
1Member, Research Specialist, Korea Institute of Civil Engr. and Building Tech.
2Member, Senior Research Fellow, Korea Institute of Civil Engr. and Building Tech.
3Member, Research Fellow, Korea Institute of Civil Engr. and Building Tech.
4Member, Senior Research Fellow, Korea Institute of Civil Engr. and Building Tech.
1정회원, 한국건설기술연구원 지반연구본부 전임연구원
2정회원, 한국건설기술연구원 지반연구본부 선임연구위원
3정회원, 한국건설기술연구원 지반연구본부 연구위원
4정회원, 한국건설기술연구원 지반연구본부 선임연구위원
*Corresponding Author
30 November 2022. pp. 97-106
PDF XML Citation
Abstract

The domestic auger-drilled pile method generally manages the driving penetration (set) value with the final stage of construction. The penetration value has been estimated by manual measurement for a long time. The automation technology is yet to be applied due to workability and high-cost limitations, despite safety issues and lack of reliability in measured results. In this study, a non-contact pile penetration measurement device was developed. Further, the field performance was verified by comparing the measurements with a conventional automation device. In addition, the on-site field quality control method was analyzed using the penetration measuring device. The field experiments confirmed that more reliable bearing capacity estimation could calculate the dynamic damping coefficient and the modified Hiley formula with the developed device. Furthermore, it can be used for pile construction management from the bearing capacity viewpoint, even for piles not subjected to dynamic load tests.

Keywords
Dynamic load test
Modified Hiley formula
Non-contact device
Pile driving
Set and rebound value

국내 매입말뚝 시공방법은 선굴착 후 최종단계의 항타 관입량으로 관리하는 것이 일반적이다. 관입량은 오래전부터 수기 측정방식에 의해 이루어지고 있으며, 작업자의 안전문제와 측정값의 신뢰도 부족 등에도 작업성의 한계와 비용 문제로 자동화 기술이 적용되지 않고 있다. 본 연구에서는 비접촉식 말뚝 관입량 측정 장치를 개발하고 기존 장치와 비교계측을 통해 현장 성능을 검증하였다. 또한 관입량 측정장치를 활용하여 현장 품질관리 방법에 대해 분석하였다. 실제 현장 실험을 통해 개발 장치를 활용한 관입량 측정과 수정 Hiley공식 및 동적감쇠계수 산정을 통해 보다 신뢰도 높은 지지력 추정이 가능한 것을 확인하였다. 연구결과에 따라 각 현장마다 수행된 동재하시험으로 부터 현장 보정 절차가 이루어지면 보다 신뢰성 높은 지지력 추정이 가능하며, 실제 현장에서는 동재하시험이 수행되지 않은 말뚝에 대해서도 지지력 관점의 말뚝 시공관리에 활용할 수 있을 것으로 판단된다.

References
1
Lee, M.W., Hong, H.S., Kim, S.H., and Jun, Y.S. (2000), A New Proposal for the Appropriate Quality Control of Driven Piles by Using Set Values, Proceeding of pile foundation in the Korean Geotechnical Society, Seoul, pp.53-63.
2
Hong, H.S., Cho, C.H., Kim, S.H., and Lee, M.H. (1997), A Study on the Reliability of Dynamic Pile Formulae, Proceeding of '97 National Conference in Korean Geotechnical Society, Seoul, pp.55-62.
3
Ha, I.S., Han, S.S., Han, S.G., and Kim, M.M. (2003), Measurement of Pile Rebound and Penetration Using Laser Sensor, Proceeding of Korean Society of Civil Engineering, pp.3257-3262.
4
Yun, H.S., Seok, J.W., Hwang, D.J., and Kim, M.M. (2005), Quality Control of Driven Piles Using DPRMs, Proceeding of Korean Society of Civil Engineering, pp.3945-3948.
5
Park, J. (2012), Safety Management Information System in Plants Construction Work, Journal of Korea Safety Management & Science, Vol.14, No.4, pp.23-29. 10.12812/ksms.2012.14.4.023
6
Park, T., Park, Y., and Kim, T. (2013), An analyzing Safety Education Contents Propriety for Accident Type in Construction Work, Proceedings of the Korea Institute of Building Construction, Vol.13, No.2, pp.94-95.
7
Yeu, Y., Kim, Y.S., and Kim, D. (2016), Development of Safe and Reliable Real-time Remote Pile Penetration and Rebound Measurement System Using Close-range Photogrammetry, International Journal of Civil Engineering, Vol.14, No.7, pp.439-450. 10.1007/s40999-016-0053-y
8
Lee, S.N., You, B.J., Limb M.S., Oh, S.R., Han, S.S., and Lee, S.H. (2002), Visual Measurement of Pile Penetration and Rebound Movement Using a High-speed Line-scan Camera, Proceeding of 2002 IEEE International Conference on Robotics and Automation, Washington DC, Vol.4, pp.4307-4312.
9
Cho, C.W. and Lee, M.W. (2001), The Application of New Pile Driving Formulas, J. of the Korean Geotechnical Society, Vol.17, No.5, pp.157-164.
10
Damen, R. and Denes, D. (2017), Improving Site Specific Modified Driving Formula Using High Frequency Displacement monitoring, Proceeding of 20th NZGS Geotechnical Symposium, CJ Alexander, pp.1-7.
11
Denes, D. and Kroenert, B. (2019), A Case Study of Pile Testing and Verification. Berth 4 Upgrade - Port of Townsville, Australasian Coasts & Ports 2019 Conference, Hobart, pp.1-7.
12
Chun, B.S. and Cho, C.W. (1999), Consideration of Set-up Effect in Wave Equation Analysis of Pile Driving, J. of the Korean Geotechnical Society, Vol.15, No.2, pp.95-101.
13
Cho, C.W. (2003), Driveability Analysis of Driven Steel Tublar Piles, J. of the Korean Geotechnical Society, Vol.19, No.5, pp.123-132.
Information
  • Publisher :The Korean Geotechnical Society
  • Publisher(Ko) :한국지반공학회
  • Journal Title :Journal of the Korean Geotechnical Society
  • Journal Title(Ko) :한국지반공학회 논문집
  • Volume : 38
  • No :11
  • Pages :97-106
  • Received Date : 2022-10-25
  • Revised Date : 2022-11-06
  • Accepted Date : 2022-11-07
  • DOI :https://doi.org/10.7843/kgs.2022.38.11.97
Journal Informaiton Journal of the Korean Geotechnical Society Journal of the Korean Geotechnical Society
Archives
: Vol.23~28 (2007~2012)
  • NRF
  • KOFST
  • KISTI Current Status
  • KISTI Cited-by
  • crosscheck
  • orcid
  • open access
  • ccl
Journal Informaiton Journal Informaiton - close