|Table of Contents|

[1] Tong Liyuan, Wang QiangDu GuangyinLiu SongyuCai Guojun,. Determination of undrained shear strengthusing piezocone penetration test in clayey soil for bridge foundation [J]. Journal of Southeast University (English Edition), 2011, 27 (2): 201-205. [doi:10.3969/j.issn.1003-7985.2011.02.018]
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Determination of undrained shear strengthusing piezocone penetration test in clayey soil for bridge foundation()
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Journal of Southeast University (English Edition)[ISSN:1003-7985/CN:32-1325/N]

Volumn:
27
Issue:
2011 2
Page:
201-205
Research Field:
Civil Engineering
Publishing date:
2011-06-30

Info

Title:
Determination of undrained shear strengthusing piezocone penetration test in clayey soil for bridge foundation
Author(s):
Tong Liyuan;  Wang QiangDu GuangyinLiu SongyuCai Guojun
School of Transportation, Southeast University, Nanjing 210096, China
Keywords:
undrained shear strength;  piezocone penetration test;  clayey soil;  cone factor;  bridge foundation
PACS:
TU413
DOI:
10.3969/j.issn.1003-7985.2011.02.018
Abstract:
In order to obtain the reasonable undrained shear strength Su for geotechnical analyses of bridge foundations in Yangtze River floodplain clayey soils, a site-specific study is conducted using the imported piezocone penetration test(CPTu)with dissipation phases at the Fourth Nanjing Yangtze River Bridge construction sites. Taking the values of Su from laboratory tests as references, several existing Su-predicted methods based on CPTu are compared and evaluated. To verify the presented cone factor Nk, additional test sites are selected and examined. The results show that the values of cone factors such as Nkt, Nke, and NΔu, depend on the shear test mode and disturbance. Generally, the values of Nke show more scattering than those of Nkt and NΔu. For the stratified and layered sediments of the Yangtze River floodplain, it is recommended using the net cone resistance qT to estimate Su and the preliminary cone factor values Nkt are from 7 to 16, with an average of 11. It is also confirmed that the CPTu test, as a new technique in site characterization, can present reasonable parameters for bridge foundations.

References:

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Memo

Memo:
Biography: Tong Liyuan(1975—), male, doctor, associate professor, seutunnel@gmail.com.
Foundation item: The National Natural Science Foundation of China(No.40702047).
Citation: Tong Liyuan, Wang Qiang, Du Guangyin, et al. Determination of undrained shear strength using piezocone penetration test in clayey soil for bridge foundation[J].Journal of Southeast University(English Edition), 2011, 27(2):201-205.[doi:10.3969/j.issn.1003-7985.2011.02.018]
Last Update: 2011-06-20