| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a simple base structure for counteracting liquefaction requiring small construction cost while effectively counteracting liquefaction, and a construction method for counteracting liquefaction.SOLUTION: A base structure A for counteracting liquefaction in a building in an earthquake comprises: a lower ground improver 1 whose upper surface 1A is arranged below the ground GL; a plurality of friction piles (P, P,...) extending downward from the lower surface 1B of the lower ground improver 1 and comprising a plurality of concrete piles (4, 4,...) as preservative piles whose lower edges are arranged below the ground water level WL and whose upper parts are engaged in a plurality of pile supporting holes (h, h,...) vertically penetrating the lower ground improver 1, and wood piles (5, 5,...) connected to and fixed on lower end parts of the concrete piles (4, 4,...); an upper ground improver 2 formed on the lower ground improver 1; and base 3 of the building established on the upper ground improver 2.</p> |
