| 摘要 |
PURPOSE:To enable a peripheral ground to be increased in density and a friction resistance and to allow reinforcing of a railroad track ground, by a method wherein flexible bag bodies are secured to a tubular body, and the bag bodies are inflated by filling the bag bodies with a curing implanting material. CONSTITUTION:A bored hole is provided in a railroad track consisting of a natural ground 1, a road bed 2, a road bed ballast 3, ties 4, and rails 5. A reinforcing pile 10, which is produced by attaching a plurality of flexible bag bodies 8, made of cloth, at intervals in a longitudinal direction of a tube body 7 to the tube body 7, is erected in the bored hole. A curing implanting material is implanted in the bag bodies 8 through an implanting tube 12 to inflate the bag bodies 8, and if implanting is completed, the implanting tube 12 is removed from the tube body 7, and the upper end of the tube body 7 is closed by a cover. The expansion of the bag bodies 8 enables a peripheral ground to be increased in density and friction resistance, reinforcing of a railroad ground, prevents sinking of a railroad, and alleviates vibration of a train. |
