期刊
ENGINEERING GEOLOGY
卷 104, 期 3-4, 页码 211-222出版社
ELSEVIER
DOI: 10.1016/j.enggeo.2008.10.010
关键词
Cone penetration test (CPT); Plezocone test (CPTU); Bearing capacity; Pile; Static load test
资金
- National Natural Science Foundation of China [40702047]
- Excellent Doctoral Dissertation Foundation of Southeast University, China [YBJJ0714]
- Jiangsu Transportation Research Foundation [8821006021]
Twelve methods to determine axial pile capacity directly based an cone penetration test (CPT) and piezocone penetration test (CPTU) data are presented, compared and evaluated. Analyses and evaluation were conducted on three types of piles of different size and length. All the tested piles have failed at the end of static load test. Both the CPT methods and the CPTU methods were used to estimate the load bearing capacities of the investigated piles (Q(p)). The static load test was performed to determine the measured load bearing capacities (Q(m)). The pile capacities determined through different methods were compared with the measured values obtained from the static load tests. Two criteria were selected as bases of evaluation: the best fit line for Q(p) versus Q(m) and the arithmetic mean and standard deviation for the ratio Q(p)/Q(m). Results of the analyses showed that the best methods for determining pile capacity are the two CM methods. Furthermore, the CPTU method is simple, easy to apply, and not influenced by the subjective judgements of operating staff. Therefore, it is quite suitable for the application in pile engineering practice. (C) 2008 Elsevier B.V. All rights reserved.
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