Abstract
The 2011 off the Pacific coast of Tohoku Earthquake induced liquefaction causing damage to residences and buried lifelines in the entire filled ground in Urayasu city, Chiba prefecture. Since immediately after the earthquake, authors have conducted SWS test at several monthly intervals at the site in the particularly serious damaged area. The result of SWS tests suggests that the fill sandy soil having a high fine content was liquefied, and the penetration resistance of its layer which had remarkably decreased due to liquefaction recovered two month after the earthquake. Moreover, the possibility of re-liquefaction is discussed based on the value of liquefaction resistance in this report. [This abstract is not included in the PDF]
