NDLI: RETRACTED ARTICLE: Explanation of liquefaction in after shock of the 2011 great east Japan earthquake using numerical analysis

Content Provider	Springer Nature Link
Author	Bao, Xiao Hua Ye, Guan Lin Ye, Bin
Copyright Year	2014
Abstract	During the 2011 Great East Japan Earthquake, severe liquefaction occurred in reclaimed ground in Urayasu city, Chiba prefecture. This liquefaction provided important lessons for us to re-recognize the liquefaction mechanism. A distinct feature of the liquefaction in this earthquake is that severe liquefaction happened not only in the main shock but also in an aftershock with a maximum acceleration of 25 gal. In some areas, liquefaction happened in the aftershock is even more serious than that happened in the main shock. In this paper, focus is placed on the characteristic features in the occurrence of liquefaction and consequent ground settlement. Based on the observed data, a series of dynamic–static analyses, considering not only the earthquake loading but also static loading during the consolidation after the earthquake shocks, are conducted in a sequential way just the same as the scenario in the earthquake. The calculation is conducted with 3D soil–water coupling finite element–finite difference analyses based on a cyclic elasto-plastic constitutive model. From the results of analyses, it is recognized that small sequential earthquakes, which cannot cause liquefaction of a ground in an independent earthquake vibration, cannot be neglected when the ground has already experienced liquefaction after a major vibration. In addition, the aftershock has great influence on the long-term settlement of low permeability soil layer. The observed and predicted liquefaction and settlements are compared and discussed carefully. It is confirmed that the numerical method used in this study can describe the ground behavior correctly under repeated earthquake shocks.
Starting Page	1881
Ending Page	1897
Page Count	17
File Format	PDF
ISSN	0921030X
Journal	Natural Hazards
Volume Number	74
Issue Number	3
e-ISSN	15730840
Language	English
Publisher	Springer Netherlands
Publisher Date	2014-06-27
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Repeated earthquake Liquefaction Settlement FEM Constitutive model Natural Hazards Hydrogeology Geophysics/Geodesy Geotechnical Engineering & Applied Earth Sciences Civil Engineering Environmental Management
Content Type	Text
Resource Type	Article
Subject	Atmospheric Science Water Science and Technology

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RETRACTED ARTICLE: Explanation of liquefaction in after shock of the 2011 great east Japan earthquake using numerical analysis

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RETRACTED ARTICLE: Explanation of liquefaction in after shock of the 2011 great east Japan earthquake using numerical analysis