Location
San Diego, California
Presentation Date
26 May 2010, 4:45 pm - 6:45 pm
Abstract
The procedure used in this research work for evaluation of liquefaction potential due to earthquake is by correlating the cyclic stress ratio(CSR) and the cyclic resistance ratio(CRR) obtained from standard penetration test and shear wave velocity. Shear wave velocity in the different layers of soils have been determined by the use of down borehole instrument. P- and S-wave velocity data of nearsurface soils (upper 21 m) are analyzed and correlated to depth and sedimentological properties. The results show that the S-wave velocity is much more sensitive to changes in lithology and mechanical properties than the P-wave velocity, which is characterized by a narrow range of values. The data shows that Vs is better correlated with silt content than with clay content for the sediments of the area investigated. While Vs has increased with increasing clay content it decreases with increasing silt content. Model curves for earthquake of various magnitudes have been developed after detailed study and analysis of the enormous data. This model curves serve the purpose of demarcating the zones of liquefaction and non-liquefaction. Using these model curves and assuming an earthquake of a particular magnitude for which the model curves have been plotted, the liquefaction potential of soil if subjected to earthquake of that particular magnitude can be evaluated.
Department(s)
Civil, Architectural and Environmental Engineering
Meeting Name
5th International Conference on Recent Advances in Geotechnical Earthquake Engineering and Soil Dynamics
Publisher
Missouri University of Science and Technology
Document Version
Final Version
Rights
© 2010 Missouri University of Science and Technology, All rights reserved.
Creative Commons Licensing
This work is licensed under a Creative Commons Attribution-Noncommercial-No Derivative Works 4.0 License.
Document Type
Article - Conference proceedings
File Type
text
Language
English
Recommended Citation
Ghose, Sumit and Ghosh, Ambarish, "Evaluation of Liquefaction Potential of Soil by Down Borehole Method" (2010). International Conferences on Recent Advances in Geotechnical Earthquake Engineering and Soil Dynamics. 15.
https://scholarsmine.mst.edu/icrageesd/05icrageesd/session01/15
Included in
Evaluation of Liquefaction Potential of Soil by Down Borehole Method
San Diego, California
The procedure used in this research work for evaluation of liquefaction potential due to earthquake is by correlating the cyclic stress ratio(CSR) and the cyclic resistance ratio(CRR) obtained from standard penetration test and shear wave velocity. Shear wave velocity in the different layers of soils have been determined by the use of down borehole instrument. P- and S-wave velocity data of nearsurface soils (upper 21 m) are analyzed and correlated to depth and sedimentological properties. The results show that the S-wave velocity is much more sensitive to changes in lithology and mechanical properties than the P-wave velocity, which is characterized by a narrow range of values. The data shows that Vs is better correlated with silt content than with clay content for the sediments of the area investigated. While Vs has increased with increasing clay content it decreases with increasing silt content. Model curves for earthquake of various magnitudes have been developed after detailed study and analysis of the enormous data. This model curves serve the purpose of demarcating the zones of liquefaction and non-liquefaction. Using these model curves and assuming an earthquake of a particular magnitude for which the model curves have been plotted, the liquefaction potential of soil if subjected to earthquake of that particular magnitude can be evaluated.
