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Development of Advanced Dynamic Cone Penetration Test Apparatus and Its Application Performance Evaluation

개량식 동적 콘 관입시험기의 개발 및 적용성 평가

  • Kim, Uk-Gie (Geotechnical Engineering Research Division, Korea Institute of Civil engineering and building Technology) ;
  • Zhuang, Li (Geotechnical Engineering Research Division, Korea Institute of Civil engineering and building Technology) ;
  • Lee, Kwang-Wu (Geotechnical Engineering Research Division, Korea Institute of Civil engineering and building Technology)
  • Received : 2014.11.03
  • Accepted : 2014.12.23
  • Published : 2014.12.30

Abstract

For quick and accurate ground investigation in wide construction site being not easy to access, advanced dynamic cone penetration test equipment was developed based on widely used equipment abroad. Advantages of existing equipment of portability and simple testing method were reflected in the new developed equipment. Meanwhile, by extending connection of lower rod, penetration depth is raised to 6m from 1 m of the existing equipment. Moreover, by assembly of hammer (2+3+3kg) and cone (3 types) etc., it is possible to perform test under the same conditions with those by German and Japan dynamic cone penetration test equipment (Tsukuba, PWRI and SH types). Auxiliary equipment was applied to make sure of perpendicularity as penetration depth increases. Applicability of the new developed equipment was evaluated through tests on various fields and its reliability was verified.

Acknowledgement

Supported by : Ministry of Land, Infrastructure and Transport

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  1. Analysis of Correlation among Various Compaction Evaluation Methods for Estimating of the Bearing Capacity on Subgrades vol.14, pp.4, 2015, https://doi.org/10.12814/jkgss.2015.14.4.045