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학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2020.6
- 수록면
- 202 - 207 (6page)
이용수
초록· 키워드
오류제보하기
A track-type underwater construction robot (URI-R) was developed by the Korea Institute of Ocean Science & Technology. Because URI-R uses tracks to move on the seabed, insufficient ground strength may hinder its movement. For smooth operation of URI-R on the seabed, it is important to determine the geotechnical properties of the seabed.
To determine these properties, standard penetration test (SPT), cone penetration test (CPT), and sampling are used on land. However, these tests cannot be applied on the seabed due to a high cost owing to the vessel, crane, sampler, and analysis time. To overcome these problems, a free fall cone penetration tester (FFCPT) is being developed.
The FFCPT is a device that acquires the geotechnical properties during impact/penetration/finish phases by free fall in water. Depth information is crucial during soil data acquisition. As the FFCPT cannot measure the penetration depth directly, it is estimated indirectly using acceleration. The estimated penetration depth was verified by results of real tests conducted on land.
To determine these properties, standard penetration test (SPT), cone penetration test (CPT), and sampling are used on land. However, these tests cannot be applied on the seabed due to a high cost owing to the vessel, crane, sampler, and analysis time. To overcome these problems, a free fall cone penetration tester (FFCPT) is being developed.
The FFCPT is a device that acquires the geotechnical properties during impact/penetration/finish phases by free fall in water. Depth information is crucial during soil data acquisition. As the FFCPT cannot measure the penetration depth directly, it is estimated indirectly using acceleration. The estimated penetration depth was verified by results of real tests conducted on land.
목차
ABSTRACT
1. Introduction
2. Ground Penetration Behavior Characteristics of FFCPT According to Acceleration Changes
3. FFCPT Configuration
4. Experiment and Results Analysis
5. Conclusion
References
참고문헌 (9)
참고문헌 신청
Brown, C.J., Smyth, S., Furlong, A., King, G., Costello, G., Potter, P., & Melton, J.S. (2010). A Synergistic Approach to Improve Multibeam Backscatter Classification Methods for Geological/ Habitat Mapping. Proceedings of the Hydro 2010 Conference, Rostock, Warnemunde, Germany.
Jang, I.S. (2015). Global Trend about Seabed Type Drilling Robots. Korea Institute of Ocean Science and Technology. Retrieved July 2019 from https://kiost.ac.kr/cop/bbs/BBSMSTR_000000000331/selectBoardArticle.do;jsessionid=D21E3C7B49083C686D308CE7F1C3B7A8?nttId=16282&pageIndex=4&searchCnd=&searchWrd=
Lee, S.-C. (2008). A study on the Estimation on Undrained Shear Strength and Preconsolidation Pressure Using N-Value Obtained from Standard Penetration Test. Graduate School of Korea Maritime University.
McCarty, J.L., & Carden, H.D. (1962). Impact Characteristics of Various Materials Obtained by an Acceleration-time-history Technique Applicable to Evaluating Remote Targets. NASA Technical Report(NASA-TN-D-1269), University of Texas at Austin.
Rogers, D. J. (2011). Fundamental of Cone Penetrometer Test (CPT) Soundings. Missouri University of Science and Technology. Retrieved July 2020 from https://web.mst.edu/~rogersda/umrcourses/ge441/CPT-Soundings.pdf
Jang, I.S. (2015). Global Trend about Seabed Type Drilling Robots. Korea Institute of Ocean Science and Technology. Retrieved July 2019 from https://kiost.ac.kr/cop/bbs/BBSMSTR_000000000331/selectBoardArticle.do;jsessionid=D21E3C7B49083C686D308CE7F1C3B7A8?nttId=16282&pageIndex=4&searchCnd=&searchWrd=
Lee, S.-C. (2008). A study on the Estimation on Undrained Shear Strength and Preconsolidation Pressure Using N-Value Obtained from Standard Penetration Test. Graduate School of Korea Maritime University.
McCarty, J.L., & Carden, H.D. (1962). Impact Characteristics of Various Materials Obtained by an Acceleration-time-history Technique Applicable to Evaluating Remote Targets. NASA Technical Report(NASA-TN-D-1269), University of Texas at Austin.
Rogers, D. J. (2011). Fundamental of Cone Penetrometer Test (CPT) Soundings. Missouri University of Science and Technology. Retrieved July 2020 from https://web.mst.edu/~rogersda/umrcourses/ge441/CPT-Soundings.pdf
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