Method and apparatus for installing prefabricated deck...

E - Fixed Constructions – 02 – B

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Details

E02B 17/00 (2006.01) B63B 9/06 (2006.01) B63B 27/16 (2006.01) B63B 35/00 (2006.01)

Patent

CA 2215247

A method and apparatus for the installation or removal of large multi-ton prefabricated deck packages (30) includes the use of usually two barges (11, 12) defining a base (16) that supports a multi-ton load. A variable dimensional truss assembly is supported by the barge (11, 12) and forms a load transfer interface between the barge (11, 12) and the deck package (30). End caps (108) are removably connected to each of two diagonally extending, longitudinal members (56-59) of a boom portion of the truss assembly. Upper (48-51) and lower (52-55) connections form attachments between the end caps (108) and the deck package (30) at the upper positions on the deck package (30). Tensile connections (95-105) form attachments between the deck package (30) and barge (11, 12) at a lower position. The variable dimension truss includes a winch powered cable (95) that can be extended and retracted by winding and unwinding the winch (86).

L'invention a pour objet un procédé et un appareil pour installer et retirer des éléments de plates-formes (30) préfabriqués pesant plusieurs tonnes. Cet appareil et ce procédé font appel à deux barges (11, 12) définissant une base (16) pouvant supporter une charge de plusieurs tonnes. Un ensemble de treillis à dimensions variables est supporté par la barge (11, 12) et forme une interface de transfert de charge entre la barge (11, 12) et l'élément de plate-forme (30). Des embouts d'extrémité (108) sont reliés, de manière amovible, à chacun des deux éléments (56-59) longitudinaux, s'étendant dans un sens diagonal d'une partie de flèche de l'ensemble de treillis. Des moyens de raccordement supérieur (48-51) et inférieur (52-55) forment des fixations entre les embouts d'extrémité (108) et l'élément de plate-forme (30) au niveau des positions supérieures sur l'élément de plate-forme (30). Des raccordements extensibles (95-105) forment des fixations entre l'élément de plate-forme (30) et la barge (11, 12) au niveau d'une extrémité inférieure. Le treillis de dimension variable comprend un câble alimenté par treuil (95) qui peut être étendu et rétracté en enroulant et déroulant le treuil (86).

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