Vacuum consolidation

BeauDrain-S

  • Vacuum consolidation | BeauDrain-S

    The function of BeauDrain-S vacuum consolidation is based on the use of an air-tight hose. In this system, vertical drainage is only used in the compressible and sealing layers. The top layers of sand, where there is a risk of air or excess water inflow, are sealed off from the system with the aid of a thyleen hose. As a result, a vacuum can be applied to the drain. The vacuum in the drain translates into an equivalent (fictitious) vertical load at ground level. For each project the subsoil is studied carefully in order to ensure that the system will function as desired. A soft sealing layer of clay or peat must be present just below the surface.

  • Beaudrain S

Description

Why BeauDrain-S?
The BeauDrain-S system is a combination of the normal BeauDrain system and vertical drainage. It was developed in order to be able to offer customised vacuum drainage for every surface, however small. The development of a hybrid of vacuum drainage and conventional vertical drainage gives the system the advantage over BeauDrain in that it can use the normal drainage stitchers. This means that its field of application is greater, without a great deal of extra cost. It can be installed anywhere in the world on every surface and at any depth. The work floor serves purely for the stability of the cranes.

Installation of the BeauDrain-S vacuum consolidation system
To prevent air leakage, a BeauDrain-S drain, pre-fabricated from a specially developed (MD88H) vertical drain, is coupled to a pre-determined length of thyleen hose. The thyleen hose is installed over the thickness of the working platform and, depending upon the groundwater level, pulled through into the sealing clay or peat layer by half a metre. The length of the hose is individually developed for each project or project area. After installation only the thyleen hoses protrude above the installation platform. After the cutting of the hoses to length, the BeauDrain-S drains are connected together into lines by means of couplings. These lines are connected to a vacuum pump at the edge of the field via a manifold and collecting hose. Beaudrain S isntallation

Advantages

Advantages of BeauDrain-S vacuum consolidation

  • Faster preparation of residential districts for construction
  • Installation of infrastructure (roads, railways and airports)
  • Installation of dikes
  • Faster installation of embankments
  • Preparation of sites where settlement allowance is expensive or scarce
  • Advantages of the BeauDrain-S system:
  • Short installation period and clean work site after installation
  • No soil is excavated, thus preventing any damage as a result of horizontal deformation of the soil due to relaxation and insufficient filling
  • No supply of drainage sand or removal/storage of removed soil
  • The use of BeauDrain-S means that a very large working depth is achievable
  • Sand layers can be followed at a safe distance
  • The use of vacuum pressure gives rise to an increase in effective pressure this reduces the risks of instability in the case of ongoing embankment creation
  • The existing body of soil is used as a sealing medium, thereby dispensing with the need for a surface membrane
  • The work site becomes available for other activities immediately after installation and remains so
  • The barrier configurations are adapted to the soil type to be consolidated and the surface
  • Horizontal deformation in the event of ongoing embankment creation is considerably reduced
  • The BeauDrain-S system also allows for a considerable reduction of secular settlements and settlement differences

Reference

Reference vacuum consolidation BeauDrain-S Project report Video
2016
Dijkversterking Hoeksewaard Noord, Netherlands – 46.500 m2
Proefvak dijkversterking Markermeerdijken Schardam, Netherlands – 500 m2
2015
Proefvak dijkversterking Hoeksewaard Noord, Netherlands – 500 m2
2013
Loosdrechtdreef Amsterdam, Netherlands – 2.000 m2
2011
N207 Gouderak, Netherlands – 25.000 m2 Video
2010
International cruise Terminal, Singapore – 6.000 m2 Project report
Tuas View A3A, Singapore – 5.000 m2
Ter Aar, Netherlands – 4.360 m2
Pijnacker fase 2, Netherlands – 1.800 m2
2007
Baanhoek Sliedrecht, Netherlands – 6.000 m2
Waddinxveen, Netherlands – 750 m2
Oude Tol, Netherlands – 11.000 m2
IHC kade Krimpen a/d IJssel, Netherlands – 2.500 m2
Randeburgseweg, Reeuwijk, The Netherlands – 4.500 m2
2006
Brisbane port, Australia – 4.125 m2 Project report
Hoekpolder, Netherlands – 12.000 m2
Bremerhaven, Duitsland – 62.000 m2 Project report Video
2005
Suvarnabhumi airport, Bangkok – 400.000 m2 Project report
Circle line, Singapore – 1.000 m2
Parking Ikea Delft, Netherlands – 3.700 m2
Ter Aar, Netherlands – 1.800 m2
2004
Railway Betuwelijn Gorinchem, Netherlands – 4.400 m2

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