What is a piled embankment?
A piled embankment consists of a field on piles, with on top of that an embankment. The bottom section of the embankment is composed of a granular material and reinforced with one or more geosynthetic layers. The embankment can be raised with sand or granular material. The piled embankment is finished with a road or a railroad construction.
Within the granular layer, a kind of arche occurs.. The load is transferred through these arches. This phenomenon is called arching.
Why are piled embankments applied?
Construction of roads or railroads with a piled embankment is far faster than many other techniques. A piled embankment is also a good solution:
- when only limited, or even zero settlements are allowed;
- when sensitive constructions lie nearby, such as pipes, tubes or an existing road;
- when constructing or broadening a (rail)road on weak soil. Especially if the life cycle costs (thus also the costs of the maintenance of the road) are considered during the decision process.
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