| 摘要 |
PURPOSE:To qreatly increase the bearing force of a steel pipe pile even when the steel pipe pile is penetrated by an inside excavating method by a method in which bearing area by the tip of the steel pipe pile is increased by an annular bottom plate is fixed to the tip to the steel pipe pile. CONSTITUTION:An annular bottom plate 2 is fixed to the tip of a steel pipe pile 1, and the tip of an auxiliary tube 3 is fixed to the inside-diameter part of the bottom plate 2. By this, bearing area by the tip of the steel pipe pile 1 can be increased, and thereby sufficient loads can be transmitted to the layer reinforced by cement 6 even when the tip is hardened by a cement milk 6. |
