Soft foundation composite ground base construction method for field pouring pipe pile with large diameter

Soft foundation composite ground base construction method for field pouring pipe pile with large diameter

  • CN 1,158,434 C
  • Filed: 01/14/2002
  • Issued: 07/21/2004
  • Est. Priority Date: 01/14/2002
  • Status: Active Grant
First Claim
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1. soft foundation composite ground base construction method for field pouring pipe pile with large diameter is characterized in that:

  • (1) sleeve pipe is become mould pouring pipe pile with large diameter machine be arranged in the ground place that to drive piles;

    (2) the Vibration on Start-up head vibrates downwards, and it is downward to drive the internal and external casing cavity structure that is attached thereto;

    (3) the internal and external casing cavity structure is squeezed in the ground under the protection of flap valve pile shoe structure closure;

    (4) when the internal and external casing cavity structure sinks to predetermined projected depth, in the cavity of internal and external casing cavity structure, evenly inject concrete by the concrete current divider;

    (5) the internal and external casing cavity structure is upwards extracted in the vibration head vibration, and flap valve pile shoe structure top separates automatically simultaneously;

    (6) extract ground fully until the internal and external casing cavity structure, in ring domain, form concrete tubular pile between the soil body of the soil body and outside;

    (7) treat in the pile tube after the concrete setting, lay sand stone layer on the stake top, and in sand stone layer, put into geo-grid, form the composite foundation mattress layer.

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