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Medium term observation of shiprepair and shipbuilding docks

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Abstract

This paper describes the observation of the structural behaviour of two of the largest docks in the world, the Setenave docks, as well as the experimental techniques developed by LNEC for observing this type of structures.

This work was considered of fundamental importance not only for checking the safety conditions of the dock structural behaviour, but also for the progress of design methods of these structures, especially as concerns the interaction between soil, piles and bottom slabs.

In accordance with the programme of observation, we had the opportunity to appreciate the behaviour of the sunk docks under the following conditions: during the elevation of the ground-water level, which had been lowered for the construction of the docks; during successive filling and emptying operations in docks for the repair of several ships; and also during the simultaneous flooding of the two docks up to the level +4.2 m above the land area for the launching of a ship constructed in the shipbuilding dock.

Résumé

Cet article rend compte de l'observation du comportement de deux des docks les plus importants du monde, les docks Setenave, ainsi que des techniques expérimentales mises au point par le LNEC pour l'observation de ce type de structure.

Cette étude a été considérée comme étant d'une importance fondamentale non seulement pour vérifler les conditions de sécurité du comportement structurel des docks mais aussi pour le progrès des méthodes de conception de ce type de structure, particulièrement en ce qui concerne l'interaction entre le sol, les piliers et les dalles de fondation.

En correspondance avec ce programme d'observation, on a pu estimer le comportement des docks immergés dans les conditions suivantes: au cours de l'élévation du niveau de l'eau souterraine qui avait été abaissé pour la construction des docks; au cours des opérations de remplissage et de vidage successives des docks pour la réparation des navires; également au cours du remplissage simultané des deux docks jusqu'au niveau+4.2 m au-dessus du sol pour le lancement d'un navire dans le dock de construction.

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Marecos, J.A.E., Fernandes, J.A. Medium term observation of shiprepair and shipbuilding docks. Mat. Constr. 11, 387–399 (1978). https://doi.org/10.1007/BF02475112

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  • DOI: https://doi.org/10.1007/BF02475112

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