レベル2地震動に対する杭基礎構造物の液状化対策技術(飛躍する耐震技術-実務への適用-)

概要

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A series of shaking table tests was carried out on pile foundations of an oil tank in liquefying sand deposit using a large shaking table. Seismic responses of two-layered grounds (upper part ; liquefiable loose sand layer, lower part ; non-liquefiable dense sand layer) and the pile foundations of the oil tank were obtained during a strong earthquake motion. In this study, as a remedial measure, soil solidification beneath the oil tank was applied, making soil improvement area. From the results of the dynamic model tests, it was indicated that the application of the soil solidification method for the oil tank supported by the piled foundations was very effective as a countermeasure against soil liquefaction. The tests results were also simulated by FEM analysis under an axisymmetric condition. The results from the FEM simulation were basically consistent with the physical model test results.
社団法人地盤工学会の論文
2003-03-01