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Ground Improvement


Vibro Stone Columns

Vibro stone are a quick and cost-effective alternative to piling and grouting when building on large areas of weak ground. Vibro columns do not produce spoil and tend to be shorter than piles.

Benefits to the process:

  • Improved bearing capacity
  • Reduction in total & differential settlement
  • Significant savings over piling
  • Bearing capacities of up to 200kN/m2 achievable
  • Displacement system – no spoil
  • Modern fleet of vibro rigs – fully instrumented and with tier 5 engines
  • Fast process - suitable for any size site requiring ground improvement
  • Improved ground allows the use of shallow foundations for further cost savings
  • Fully validated by load testing

Applications of the process:

  • Ground improvement for housing, large industrial units and warehouses
  • Enabling construction of embankments over weak ground for highway and rail projects

Technique

Van Elle employs two types of method for this technique utilising the rigs we have customised and engineered to deliver an effective solution. These methods are:

Top Feed

Typically used where an open bore can be formed by the vibroflot which remains stable and can be filled with stone aggregate from working platform level. See illustration below.

Bottom Feed

Used when an open bore becomes unstable due to the presence of very soft soils or with a high water table. In this case, stone aggregate is fed into the column through a tube attached to the vibroflot which supports the bore as the flot remains within the ground while constructing the stone column. See illustration below.

Contact us


Ground Improvement Team

01925 394968

The Genesis Centre,

Garrett Field,

Birchwood,

Warrington,

WA3 7BH

claire.garrett@van-elle.co.uk