Solution - Services

Cast-in-place concrete large - diameter pipe pile

  • I - METHODOLOGY AND MAJOR PARAMETERS

    -
    Vibration and penetrating double casing to design depth
    -
    Pouring concrete in to the gap between inter and outer casings, pile is formed once the annular casing is vibrated and withdrawn.



    II. ADVANTAGES
    - Pile lenght could be over 25m (typical use ≤25m )
    - Outer diameter of pile is from 1.0m to 1.5m, thickness of pile wall is from 0,12 to 0,15m
    - Pile spacing is from 2.5D to 4D
    - Concrete grade ≥ B20
    -
    Large diameter and high length
    - High bearing capacity and stabilily
    - Simple construction method

    - Ease of quality control and quality inspection, hing reliability

    - Competitive cost

    - Save construction time

    - Low residual settlement after improvement
    - Codes for design, construction, inspection and approval have been officially issued

    III. CONSTRUCTION

    IV. QUALITY CONTROL AND INSPECTION

    STT

    PARAMETERS

    VALUE

    METHOD

    1

    Pile length

    +30mm

    Length of casing, site minute

    2

    Concrete filling coefficient

    ≥1.1

     

    Real volume of concrete

    3

    Pile position

    ± 200mm

     

    Check coordination of pile

    4

    Inclination

    < 1%

    Inclination meter

    5

    Pulling speed of cassing

    Soft ground

    0.6 – 0.8m/min

    Measuring of pulling time and distance of cassing movement

    Good ground

    0.6 – 0.8m/min

    6

    Quantity of pile wall

    Design

    Sampling and testing and small strain test (PIT)

    7

    Bearing capacity

    Design

    Static loading test


    V. SCOPE

     

    VI. TYPICAL PROJECTS USING PCC PILE:



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