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Experimental study of earthquake liquefaction of saturated silt in Wuhan area

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Authors:Hu Qing; Li Yi; Zhang Yi; Xu Lijun
Author Affiliations:Primary:
China Earthquake Administration, Institute of Seismology, Laboratory of Earthquake Geodesy, Wuhan, China
Hubei Electric Power Survey and Design Institute, China
Volume Title:Electronic Journal of Geotechnical Engineering
Source:The Electronic Journal of Geotechnical Engineering, 20( BUNDLE 18), p.10103-10112. Publisher: Mete Oner, Stillwater, OK, United States. ISSN: 1089-3032
Publication Date:2015
Note:In English. 14 refs.; illus., incl. 3 tables
Summary:Soil liquefaction is a major cause of site damage during earthquakes. Based on in-situ tests, the influence of the saturated silt for liquefaction estimation were studied in Wuhan area. Then the dynamic properties and liquefaction mechanism of the saturated silt were illuminated by dynamic triaxial test. According to the test, the development law of pore water pressure of the saturated silt were analyzed. It shows the value of water pore pressure tends to be stable when it is equal to about 90% of confining pressure, and the corresponding value of double amplitude strain is 5%. Therefore, these values may be used as the indexes of liquefaction evaluation. Also the relationship between the dynamic shear stress ratio and the number of soil cycles were obtained. Then the liquefaction condition was estimated of the saturated silt with shear stress liquefaction discrimination method at different depths and different seismic intensities in Wuhan area.
Subjects:Clastic sediments; Confining pressure; Earthquakes; Experimental studies; Geologic hazards; Laboratory studies; Liquefaction; Mechanism; Natural hazards; Physical properties; Pore water; Rock mechanics; Saturated zone; Saturation; Sediments; Seismic intensity; Seismic response; Shear stress; Silt; Soil mechanics; Stress; Triaxial tests; Water pressure; Asia; China; Far East; Hubei China; Wuhan China; Jianghan Plain
Coordinates:N303500 N303500 E1141600 E1141600
Record ID:870042-5
Copyright Information:GeoRef, Copyright 2021 American Geosciences Institute.
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