ABSTRACT
As the steel or concrete walls constructed underground can prevent liquefied soil from flowing, they have been used as the effective anti-liquefaction countermeasures. However, it is difficult that these countermeasures are constructed perfectly under a ground which has buried objects or rocks, so the walls may have some tiny gaps. As the behaviour of liquified soil flowed out of a gap is not clarified. Therefore, the author carried out two steps of experiments. Firstly, the author focused on a small gap between the walls and carried out shaking model tests. Secondly, the author investigated the effect of the gaps on a whole construction. Shaking model tests for an embankment reinforced by the sheet-piles which has gaps, or no gaps were performed. Through the second model tests, it was confirmed that the soil was pushed from the gaps between sheet-piles, which induced the settlement of the embankment.
