An improved cone penetration test (CPT)-correlated design method is proposed for open-ended prestressed high-strength concrete pipe piles. The method takes the effects of compaction, plugging and friction fatigue into consideration. The evaluation proposal for shaft resistance introduces three parameters of stress reduction factor, compaction sensing coefficient and friction fatigue coefficient with their values addressed. The base resistance is divided into two parts of pile wall resistance and plug capacity, and is expressed in terms of the incremental filling ratio of the soil plug. The ratios of shaft and base resistance to CPT cone resistance, as well as the influence zone for end bearing, are determined. The rationality of this method is tested by comparing the calculated values with the results measured in field tests.
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Research Article|
November 20 2015
CPT-correlated design method of open-ended concrete pipe pile
Junwei Liu, PhD;
Junwei Liu, PhD
Lecturer, Postdoctor
Qingdao University of Technology, Qingdao, Shandong, People's Republic of China
Key Laboratory of Geotechnical and Underground Engineering (Tongji University), Ministry of Education, Shanghai, People's Republic of China
Zhejiang University, Hangzhou, Zhejiang, People's Republic of China
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Mingyi Zhang, PhD;
Mingyi Zhang, PhD
Professor
Qingdao University of Technology, Qingdao, Shandong, People's Republic of China
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Feng Yu, PhD
Feng Yu, PhD
Professor
School of Civil Engineering and Architecture, Zhejiang Sci-Tech University, Zhejiang, Hangzhou, People's Republic of China
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Publisher: Emerald Publishing
Received:
January 21 2015
Accepted:
July 31 2015
Online ISSN: 1751-8563
Print ISSN: 1353-2618
ICE Publishing: All rights reserved
2015
Proceedings of the Institution of Civil Engineers - Geotechnical Engineering (2016) 169 (3): 240–249.
Article history
Received:
January 21 2015
Accepted:
July 31 2015
Citation
Liu J, Zhang M, Yu F (2016), "CPT-correlated design method of open-ended concrete pipe pile". Proceedings of the Institution of Civil Engineers - Geotechnical Engineering, Vol. 169 No. 3 pp. 240–249, doi: https://doi.org/10.1680/jgeen.15.00016
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