Posted on 20 October 2016
Dutch contractors Van Oord and GMB installed innovative pins for the first time to reinforce a levee along the river Rhine, in the Netherlands.
The main advantage of this new soil reinforcement technique is that it can be used in places where working space is limited, for instance close to living areas. Compared to sheet piling, there is no vibration nuisance for the local population during construction, and there is no obstruction of groundwater.
The client, Dutch regional water authority Rivierenland, is embracing this new method for use in the Hagestein-Opheusden Levee improvement project.
|The pin prevents the levee from sliding.|
Rods in cement
The pins are steel anchor rods encased in cement. They are inserted into the underlying layer of sand and prevent the possibility of the levee collapsing during floods.
Installing the pins is an effective way of making levees safer.
The dike pins are installed completely inside the existing levee profile, so that it is not necessary to interfere with its crown or foot.
This new method of levee reinforcement is the result of close cooperation between Van Oord, GMB, BAM Speciale Technieken and RoyalHaskoningDHV.
|Steel anchor rods that are encased in cement.|
Civil engineering ingenuity
According to Johan Bakker, Director of Innovation at regional water authority Rivierenland: "Safety, consideration for local residents, and their environment, creativity and boldness are important issues for us when we take on and carry out levee projects. The pin is a shining example of civil engineering ingenuity."
Edwin van der Poel, Managing Director of GMB’s flood prevention and construction division, says: "Levee pins are a simple and environmentally friendly way for us to reinforce dikes. Their modular structure means they can be extended when required."
Read also on this website
● Water board Rivierenland to test vacuum consolidation as cheaper alternative for levee upgrade, 13 April 2016
● Arcadis and InTech start international roll-out of new technology to monitor levees, 26 November 2015
● Water board Rivierenland world's first with anti-piping technology under levees along Nederrijn, the Netherlands, 9 July 2015
● Boskalis and Van Oord to reinforce coastline by creating beach in front of sea dike, the Netherlands, 3 December 2013
Rotterdam, the Netherlands
+31 88 8260000
Opheusden, the Netherlands
+31 488 44 94 49
Regional water authority Rivierenland
Tiel, the Netherlands
+31 344 64 90 90