Method of manufacturing prestressed high strength concrete hollow square pile centrifugal, steam, maintenance method

Method of manufacturing prestressed high strength concrete hollow square pile centrifugal, steam, maintenance method

  • CN 1,597,286 A
  • Filed: 09/16/2004
  • Published: 03/23/2005
  • Est. Priority Date: 09/16/2004
  • Status: Active Application
First Claim
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1. , the method for prestress high intensity concrete hollow square pile is made in a kind of centrifugal process steam curing, it is characterized in that whole pile centrifugal forming and carries out steam curing, and its technology comprises:

  • A, preparatory stage;

    make steel reinforcement cage, proportioning is made concrete, cleared up centrifugal mold and be coated with separation layer in accordance with regulations;

    B, installation steel reinforcement cage;

    be put in the centrifugal mold steel reinforcement cage of making and the location;

    C, mechanical cloth;

    the concrete for preparing is injected centrifugal mold with mechanical system;

    D, matched moulds;

    close up centrifugal mold, and be fixed with the locating locking bolt from the outside with centrifugal mold, the assurance centrifugal mold can not be opened when rotating;

    E, usefulness stretch-draw machine stretch-draw prestressing force rod iron are to increase its prestressing force;

    F, centrifugal forming;

    start centrifuge and allow whole centrifugal mold rotate, under centrifugal action, the concrete of centrifugal mold middle part gets rid of around the centrifugal mold outside, and the middle part forms hollow shape;

    G, steam curing;

    the whole centrifugal mold that will be enclosed with hollow pile is put into the steam curing pond, injects water vapour maintenance a few hours;

    H, the demoulding;

    open the locating locking bolt of centrifugal mold outside, slough centrifugal mold, take out the hollow pile of moulding;

    I, pile;

    hollow pile was deposited in open-air atmosphere after 3~

    7 days, through dispatching from the factory after the assay was approved.

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