| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for reinforcing a hole wall for construction of a cast-in-place concrete pile, which enables horizontal ground reaction of the pile to be reliably secured when the cast-in-place concrete pile is constructed in weak stratum ground.SOLUTION: A reinforcement cage 3 attached in the state of having an outer periphery covered with a water-permeable net 5 is erected in a pile hole 2. Concrete 4 is placed in the net 5. A hole wall is reinforced by infilling a grout material 9 into a collapsed part A, which appears in the hole wall of the pile hole 2, via an injection pipe 10 inserted into the inside of the water-permeable net 5 along the reinforcement cage 3. Soil cement or fluidization-treated soil is used as the grout material 9. A steel pipe or a polyvinyl chloride pipe is used as the injection pipe 10. |
