Mapping Liquefaction Potential Considering Spatial Correlations of CPT Measurements
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VIEW THE REPLYPublication: Journal of Geotechnical and Geoenvironmental Engineering
Volume 132, Issue 9
Abstract
The past studies of liquefaction phenomena during earthquakes have contributed to the development of simplified methods employing field test data to assess the liquefaction potential. Since the field data are limited by exploration cost, it is of interest to obtain valuable and meaningful distribution of liquefaction potential of an area from the limited data. This study proposes a method for assessing liquefaction potential over an extensive area according to the random field concept. The spatial structures of soil properties are estimated from the available cone penetration test (CPT) measurements. The soil properties at unsampled locations are simulated using Monte Carlo simulation. The reliability against liquefaction at every location within the study area is evaluated to map the liquefaction potential. The comparison between simulated distributions of liquefaction potential and observed liquefaction phenomena is discussed. The spatial correlation of soil property provides more information than the traditional approach that solely uses the field test data. The influences of CPT data, penetration locations, and spatial structures of soil properties on the mapping results of liquefaction potential are also discussed.
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Acknowledgments
The work presented in this paper was supported by the National Science Council, Taiwan under Grant Nos. NSCTNSC 92-2211-E-260-004 and NSCTNSC93-2211-E-260-001. Professor Chang Wen-Jong, National Chi-Nan University, provided assistance when the paper was revised. This support is greatly appreciated.
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Published In
Journal of Geotechnical and Geoenvironmental Engineering
Volume 132 • Issue 9 • September 2006
Pages: 1178 - 1187
Copyright
© 2006 ASCE.
History
Received: Sep 9, 2004
Accepted: Nov 22, 2005
Published online: Sep 1, 2006
Published in print: Sep 2006
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