Presentation of the works
The structure is a sheet-pile quay with a reinforced-concrete crown beam fitted with equipment. Footbridges provide access from the quay to the pontoons, which are held in place by guide piles anchored to the sheet piles. Lastly, guardrails cover the beam, allowing users to circulate freely.
The sheet piles were installed using vibro-driving as well as jetting, a technique that enables them to penetrate the very compact sands encountered. The crowning beam was then installed, complete with its various fittings. Finally, the guide piles were vibro-drived into place, and the pontoons placed on their guides.
Our teams worked from the ground for the accessible part of the quay, while the part dedicated to the protected zone and the part in contact with the seawall were built entirely by nautical means.
More information : article made by SMPBA