![]() ![]() Benefits of such a floating shipyard include the flexibility to more readily adapt the facility when required and potentially re-locate all or part of the shipyard if required due to changes in market conditions. As such, typical suitable locations will be either naturally sheltered or provided with adequate breakwaters. ![]() limiting structural movements for the benefits of equipment (e.g. For appropriate operational conditions within the yard facility and acceptable downtime, relatively tranquil metocean conditions are required at the site, i.e. ![]() using modular power plants on floating barges. In addition, modular approaches to aspects such as power production may be incorporated, e.g. Similarly, fabrication of floating structures can be conducted off site, often benefiting from modular construction and providing more economical solutions relative to in situ construction. Floating shipyard facilities are particularly suitable for locations with naturally deep water, where floating structures may be more economical due to lower capital construction costs relative to land based facilities (e.g. However, the concept of a shipyard comprised exclusively of floating structures is considered herein. = bending moment in X-direction of elastic slab My = bending moment in Y-direction of elastic slab M.Shipyards often incorporate floating structures as elements within their facilities, for example floating docks for drydocking vessels requiring repairs or maintenance and pontoons to provide berths for smaller support vessels, such as tugs and workboats. to be docked E-modulus of elasticity F = freeboard of dock at maximum-sub-mergence f = minimum docking freeboard of pontoon G = modulus of elasticity in shear g = acceleration due to gravity H = height of wingwalls above dock floor h = depth of pontoon I = moment of inertia Is = moment of inertia of ship in dock K = keel of dock KG = vertical distance from K to center of gravity M = vertical distance from K to transverse metacenter k = modulus of foundation, also mass radius of gyration L = length of dock L~ = overall length of supporting blocks Lw = length of wave l = length of plate in cell M = bending moment Mt = torque M. NOMENCLATURE The following nomenclature is used in the paper: A = area of cell in shear computations B-width of pontoon BM = transverse metacentric radius B1-width of dock channel B, = beam of vessel to be docked b-width of wingwall D = total depth of dock d-draft of dock 507 d, = draft of vessel. Further design aids are provided in the form of supplementary design tables and charts, including a set for coefficients of moments and shears in the dock pontoon, which is considered as an elastic cellular slab supporting the ship loading. In order to simplify the analytical work, general expressions are derived for computing dock stresses under various conditions of loading at sea and in docking of ships. Arrangements and framing are given in considerable detail not only for steel-flamed docks but also for those of concrete and timber. In the development of the design, use is made first of the conventional approach, then a detailed discussion is given of the most advanced concepts of analysis. floating drydocks, a comprehensive treatment of the subject is presented in this paper. With the objective of furnishing helpful data and guides on the design of. ![]()
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