| 摘要 |
<p>PROBLEM TO BE SOLVED: To easily install a horizontal resistance increase body which is unlikely to be damaged even by an excessive horizontal force and capable of sufficiently increasing a horizontal resistance force, in a portion most effective for a precast concrete pile.SOLUTION: A precast concrete pile insertion hole 2 including a diameter enlarged hole part 20 reaching desired depth in an upper end portion is formed by excavation. At a desired height position of an upper end portion of a precast concrete pile 1, flange-shaped upper and lower partition plates 10 are provided while being spaced vertically. The precast concrete pile 1 is built into the precast concrete pile insertion hole 2, and a cylindrical casing 30 is inserted into the diameter enlarged hole part 20 to such a height as to be spread over both the partition plates 10. A flowable solidification material such as cement milk is injected from a lower end side into a horizontal resistance increase body forming part surrounded with the casing 30, the upper and lower partition plates 10 and a precast concrete pile surface so as to form a horizontal resistance increase body A comprised of a hardening improved body, and the casing is removed thereafter.</p> |
