2018 Volume 74 Issue 3 Pages 318-331
In order to clarify the behavior of the occurrence of nonuniform settlement caused by liquefaction, the surface wave explorer method and 2-dimensional effective stress were performed, aimed to the field damaged in the 2011 off the Pacific coast of Tohoku earthquake. First, the surface wave explorer method was applied to several sections which shows different degree of damages. These results showed that the thickness and the resistance of liquefiable layer were largely different at each part and had some relationship with the degree of settlement. Furthermore, 2-dimensional effective stress analyses were carried out by used of the ground model with consideration of the result of the investigation. The simulated results verified that the nonuniform settlement was caused by the special distribution of the thickness and the resistance of liquefiable layer. Moreover, the possibility of the use of surface wave explorer method for prediction of liquefaction was confirmed.
