[1] Tong Liyuan, Cai Guojun, Liu Songyu, Du Guangyin, et al. Use of piezocone tests to predict consolidation yield stressand overconsolidation ratio of lagoonal deposit soil [J]. Journal of Southeast University (English Edition), 2007, 23 (1): 112-116. [doi:10.3969/j.issn.1003-7985.2007.01.022]

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Use of piezocone tests to predict consolidation yield stressand overconsolidation ratio of lagoonal deposit soil()

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Journal of Southeast University (English Edition)[ISSN:1003-7985/CN:32-1325/N]

Volumn:

23

Issue:

2007 1

Page:

112-116

Research Field:

Civil Engineering

Publishing date:

2007-03-30

Info

Title:

Use of piezocone tests to predict consolidation yield stressand overconsolidation ratio of lagoonal deposit soil

Author(s):

Tong Liyuan;  Cai Guojun;  Liu Songyu;  Du Guangyin

Institute of Geotechnical Engineering, Southeast University, Nanjing 210096, China

Keywords:

piezocone(CPTU);  consolidation yield stress;  overconsolidation ratio;  lagoonal deposit;  correlation

PACS:

TU413

DOI:

10.3969/j.issn.1003-7985.2007.01.022

Abstract:

Existing empirical methods for interpreting the consolidation yield stress and the overconsolidation ratio(OCR)in clays from piezocone tests are briefly reviewed. It can be seen that no universal correlation exists for all worldwide sites. However, for a given clay deposit, there does exist a most appropriate method to reflect the consolidation yield stress and the OCR based on piezocone test data. Three empirical methods are compared based on the piezocone test data collected on Lixia River lagoonal deposit soil sites in the north of Jiangsu province. The objective of this study is to evaluate the validity of the existing relationships linking the consolidation yield stress to piezocone test data and identify the appropriate method for Lixia River lagoonal deposit soil. It is shown that the correlation based on the net tip resistance has much higher accuracy for estimating the consolidation yield stress of lagoonal deposit soil than other methods.

References:

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[2] Demers D, Leroueil S.Evaluation of preconsolidation pressure and the overconsolidation ratio from piezocone tests of clay deposits in Quebec [J]. Canadian Geotechnical Journal, 2002, 39(2):174-192.
[3] Mayne P W.Determination of OCR in clays by piezocone tests using cavity expansion and critical state concepts [J].Soils and Foundations, 1991, 31(2):65-76.
[4] Chen B S Y, Mayne P W.Profiling the OCR of clays by piezocone tests, CEEGEO-94-1[R].Atlanta, USA:Georgia Institute of Technology, 1994.
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[7] Mayne P W, Holtz R D.Profiling stress history from piezocone soundings [J].Soils and Foundations, 1988, 28(1):1-13.
[8] Chen B S Y, Mayne P W.Statistical relationships between piezocone measurements and stress history of clays [J].Canadian Geotechnical Journal, 1996, 33(2):488-498.
[9] Houlsby G T.Piezocone penetration test [C]//Proceedings of the Geotechnology.Birmingham, 1988:141-146.
[10] Larsson R, Mulabdic M.Piezocone tests in clay, 42[R]. Linköping:Swedish Geotechnical Institute, 1991.
[11] Chen B S Y, Mayne P W.Type 1 and 2 piezocone evaluation of overconsolidation ratio in clays[C]//International Symposium on Cone Penetration Testing.Linköping, 1995:143-148.
[12] Lunne T, Robertson P K, Powell J J M.Cone penetration testing in geotechnical practice [M].London:Blackie Academic & Professional, 1997:16-24.
[13] Kulhawy F H, Mayne P W.Manual on estimating soil properties for foundation design, EL-68000[R].Palo Alto:Electric Power Research Institute, 1990.

Memo

Memo:

Biographies: Tong Liyuan(1975—), male, doctor, lecturer, atmu@seu.edu.cn;Liu Songyu(1963—), male, doctor, professor, liusy@seu.edu.cn.

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