Study on Cast-in-Place Small-Diameter Piling Method Applicable to Work Between Tracks

Due to the small size of machines used for cast-in-place piles in narrow spaces with low overhead clearance between tracks, normal circulation piles (used in normal circulation boring methods) are highly workable for cast-in-place applications. Mud cakes easily adhere to bore walls in the generally used normal circulation boring method, however, since the generally used drilling slurry has high specific gravity and viscosity. The end result is usually a lower quality pile. The generally used normal circulation boring method has not been used in pile-related applications in primary railroad buildings and structures due to this reason. JR East introduces a method the company has analyzed and proposed as a way to apply normal circulation piles to primary structures by maintaining pile workability while controlling slurry quality.

Language

  • English

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Filing Info

  • Accession Number: 01342327
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Jun 21 2011 12:00PM