Abstract
Ground liquefaction caused in nearby underground structures may create potentials of soil uplifting. In our research, by employing scaled model of Box Culvert sized in width of 5.85m by height of 3.15m, uplifting performance of the underground structure and the effects of the liquefaction countermeasure using sheet pile were examined. The testing was conducted using centrifuge model test field with 25G for non-countermeasure model and countermeasure model with sheet piles. The testing model was created with rigid PVC and its specific gravity was set as 0.75. As a result, the experiments provided data on uplifting performance of the underground structure and effects of the countermeasure methods to reduce soil lifting. Furthermore, the results of the each test were applied to estimation formula of soil uplifting rate, and then the estimated value and the observed value were compared.
