Solution - Services

Hanoi urban railway project, Catlinh - Hadong Line



  • SOIL IMPROVEMENT WORK OF DEPOT AREA

    - Total area of SIW: ~26ha
    - Area for SIW by vacuum combined wit surcharge: ~10ha
    - Depth of PVDs installation: 28m
    - Design vacuum pressure: > 80kPa
    - Height of sand surcharge : 3.7m
    - Depth of clay sealing wall: 25m
    TECHNICAL SPECIFICATIONS
    - Bearing capacite: 120kPa
    - Residual settlement after 10 years : < 30cm
    - Settlement rate : < 5cm/year
    PERFOORMANCE OF SOIL IMPROVEMENT WORK
    - Total time of vacuum system operation: 130 days
    - Total settlement due to SIW: 170cm- 190cm
    - Degree of consolidation: > 97.5%
    Pictures of the construction improvement work by vacuum preloading.

    Clay sealing wall

     Installation of monitoring intrusment

    Installation of settlement plates

    Monitoring, data collection and analysis

    SOIL IMPROVEMENT WORK BY CAST-IN-PLACE CONCRETE LARGE - DIAMETER PIPE PILE (PCC) OF DEPOT AREA
    - Pile lenght: 16.5 m ~ 19 m.
    - Outer diameter of pile: 1.0 m
    - Distance of pile: 3.0 m x 3.0 m
    Pictures of the construction improvement work by PCC.



    PCC Construction

    Inspection the quality of experimental pile PIT

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