| 摘要 |
PROBLEM TO BE SOLVED: To provide a construction method for a foundation by which sufficient pull-out resistance can be secured by a skin frictional force even in soft ground.SOLUTION: There is provided a construction method for a foundation 1 by which a base-enlarged foundation section 3 is constructed in ground G. The construction method includes the steps of: creating a soil improvement section 2 in a state in which cut-off performance during boring can be secured and in which a borehole wall can be self-supported; boring a borehole 21 assuming an outer shape of the base-enlarged foundation section, after the soil improvement section 2 reaches predetermined strength; arranging a reinforcement cage 31 in the borehole; and filling the borehole with concrete 32. |
