A self-propelled barge used for jacket block floatover and its operation method

Abstract

The invention relates to a self-propelled barge for floating and supporting a jacket chunk and a work method of the self-propelled barge. The self-propelled barge comprises ship bodies which are arranged in parallel and at intervals, wherein the two ship bodies are connected with each other by two beams, a slide way which is distributed along the length direction and a plurality of chunk fixing devices which are arranged along the slide way at intervals are respectively arranged on each of the tops of the two ship bodies, the ends, which are arranged at the heads of ships, of the two slide ways are respectively provided with a pulling jack, and the tops arranged at the tail of the ship, of the two ship bodies is provided with at least one set of connecting mechanism; each set of the connecting mechanism comprises a pair of driving gears, a connecting beam, a guide way and a pair of bolt rooms; the two bolt rooms are oppositely arranged on the two ship bodies, the bottom of the connecting beam is supported on one-side ship body in a sliding way along the direction which is perpendicular to each slide way through a guide rail, and penetrates through the bolt rooms and the slide way which are arranged on the ship body on the same side, bolts matched with the connecting beam are arranged on the two bolt rooms, racks are respectively arranged at two sides of the connecting beam and are meshed with the two driving gears, and the two driving gears are arranged on one-side ship body where the guide rail is arranged. The self-propelled barge can be used for installing offshore jacket chunks widely.

Description

technical field [0001] The invention relates to a barge and an operation method thereof, in particular to a self-propelled barge used for the float of a jacket block and an operation method thereof. Background technique [0002] The float-over method is one of the main methods for offshore jacket module installation. When carrying out offshore float-over operations, the barge first lifts the upper block and drives in through the jacket slot until the upper block is directly above the jacket structure. Sink until the fulcrum of the jacket is docked with the fulcrum of the upper block, and then the barge retrieves the mooring system and withdraws from the notch of the jacket to complete the float-over operation. [0003] At present, the commonly used method of float-over method is single-vessel float-over, which has the following defects: First, due to the large width of the barge (usually about 30 meters), in order to make it smoothly enter and exit the jacket, the jacket no...

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