Pile embankment structures

A pile embankment system, granulate embankment on piles , granulate embankment on slender piles (GSP) or Load Transfer Platform (LTP), consists of a field of (usually slender) piles, with an embankment on it. This usually consists of a granulate fill that is reinforced with a geosynthetic material. On top of that, the embankment can be further elevated with sand or a granulate. Finally, the pile embankment is finished with a foundation layer and a paving or railway track, and in some cases even a soil embankment founded on steel.



CRUX Engineering is currently the engineering firm with the most experience in the Netherlands in designing LTPs. The designs of these LTPs have followed the development of the applicable standards and guidelines, initially based on BS8006 (in GB), EBGeo through the current Dutch design guideline for Pile embankment systems CUR226 (version 2016). CRUX Engineering has actively participated with various employees in the two DelftCluster - CUR working groups, which resulted in the first and revised Pile embankment systems design guidelines (CUR 226, 2010 and 2016). CRUX Engineering, along with ProRail, Voorbij FT, Huesker, Movares and Deltares, has also participated in an extensive monitoring programme of a pile embankment system in Houten (the first in the Netherlands, at the location of the railway).



The designing of an LTP is done with internally-developed spreadsheets based on advanced analytical calculations supplemented with PLAXIS calculations. Some examples of the pile embankment systems designed and realized by CRUX are: Barendrecht (Tramplus line), Almere (Literatuurwijk noise barrier, Bastions), Haarlemmermeer (Zuid branch), Wijdemeren (N201 Turborotonde), Beesd (A2 Culemborg - Deijl) and Houten (the first in the Netherlands, at the location of the railway), Urk (crane installation sites for the construction of wind turbines), Gouda (PST A12), Gouda (VRI N207-N454) and the ring road of Reeuwijk-Brug, with the longest pile embankment in the Netherlands at a length of approximately 3.4 km.

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