| 摘要 |
PURPOSE:To increase a resistance force against a horizontal force, by a method wherein a cylindrical casing is erected outwardly of the outer peripheral part of the head part of a hollow pile having a top part which is open, and concrete is poured in the hollow part of the pile head and also in a footing part. CONSTITUTION:After a hollow pile 1 with a top part which is open, and a cylindrical casing 4 with a partial bottom 3 is erected, as it is guided by the pile 1, outwardly of the outer peripheral part of a pile head part in a manner that a gap between the forward end thereof and the pile 1 is closed. By hanging down a blocking material 7 from a mounting rod 15 by means of chains 16, the blocking material is disposed in the pile 1 in a level lower than that of the casing 3. Reinforcing bars 14 for underground beam, extending through the casing 4, are arranged, and a plate 8 having a through-hole formed at the center, is placed to the top part of the pile 1. Concrete 9 is then poured in the pile 1 and the casing 4. After a base plate 11 of a steel frame 10 is superposed with the plate 8 to couple them together by means of bolt and nuts, concrete is poured in the underground beam part and a footing part 12 to form them integrally. |
