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Optimisation the length of pile groynes

Optimisation the length of pile groynes

As part of a case study in a research project, our customer examined the ideal length of wooden breakwater posts which are to be embedded in the sand, protecting the beach against coastal erosion. The goal was to reduce the length of the piles to a minimum in order to reduce the amount of material and energy used. At the same time, the wooden piles should be stable enough to withstand the swell.

As there was no possibility to use the sensitive measuring devices required in salty seawater, the piles were set on the waterfront. The customer used a pneumatic linear vibrator series NTK 25 fixed on the piles to simulate the force and frequency of the ocean waves. In this way, the long-term effect of the swell could be successfully replicated.

With the knowledge gained, the consumption of wooden piles can be reduced to a sustainable level. The reduction of resources, energy and time necessary to install the piles, that are too long, is also very beneficial for the environment.