| 摘要 |
PURPOSE:To place a good-quality compacted concrete into the ground by a simple apparatus using a system in which a vibrator is provided on the periphery of a pipe on the lower end of a tremie tube, and concrete for an underground pile is placed through the tremie tube. CONSTITUTION:An iron bar cage 4 is inserting into a hole 2 drilled in the ground, and a tremie tube P having a vibrator 20 on its tip pipe portion P1 to be immersed in concrete is inserted into the iron bar cage 4. While placing concrete C through the tremie tube P, the tremie tube P is pulled up while compacing the concrete by vibration by means of the tremie tube P to construct an underground pile. A compacted concrete can thus be easily placed. |
