A new prefabricated shipping process for suction anchor piles

Abstract

The invention discloses a new prefabricated shipping process for suction anchor piles, which comprises the following steps: cutting material in sections and making a material distribution pipe section; prefabricating the top structure frame of the suction anchor and then combining with the corresponding material distribution pipe section and spraying as a whole ; Prefabricate the loading pier, and sequentially prefabricate multiple material distribution pipe sections separately and then close them up as a whole; install the anchor chain and pipe section accessories of the suction anchor, and fix and weld the loading pier and suction anchor before hoisting to the barge fixed; complete the task of loading the suction anchor. The new prefabricated shipping process of suction anchor piles of the present invention adopts the prefabrication process of vertical construction, which reduces the difficulty of assembling suction anchor piles, and ensures technical requirements such as ellipticity, assembly accuracy, and wrong skin size; the shipyard is used for overall construction, Make full use of site resources and improve resource utilization efficiency; use gantry cranes for ship loading, reduce the use of crawler cranes and floating cranes, improve construction efficiency, and shorten the construction period.

Description

technical field [0001] The invention relates to the technical field of offshore oil engineering, in particular to a new process for prefabricating and loading suction anchor piles. Background technique [0002] The concept of offshore suction anchor was proposed in the 1960s, and it was put into engineering use in the North Sea of ​​Europe for the first time in the early 1980s. The first application of my country's suction anchor in offshore oil fields was the Caofeidian 1-6 two-point mooring system in 1994. [0003] The diameter of the suction anchor cylinder is usually greater than 4.2m. It is characterized by relatively large diameter and thickness, and the pipe wall is soft. The ellipticity is the difficulty of grouping control, and there are many auxiliary structures of anchor piles. The installation and construction sequence is more important, which affects the overall accuracy. Control is stricter. [0004] The method of horizontal construction is usually adopted at ...

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Problems solved by technology

[0005] 1. The pair-to-welding group between pipe sections is difficult to control the precision, and has high requirements for the flatness of the site and the bearing capacity of the rotating tire;

[0006] 2. There needs to be enough space for the crawler crane to turn and walk, and the site occupies a large area;

[0007] 3. Two large crawler cranes are required for hoisting and turning over, and there is a high operation risk;

[0008] 4. For shipping and transportation, the carrying capacity of the front edge of the general terminal is very small, and the crawler crane needs to increase the radius of rotation, and it is necessary to stand at a far position for hoisting, resulting in waste of resources

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