Novel suction anchor pile prefabricating and shipping process

Abstract

The invention discloses a novel suction anchor pile prefabricating and shipping process. The process comprises the following steps: conducting sectional blanking, and manufacturing material distribution pipe sections; after prefabricating of a suction anchor top structure frame, assembling the suction anchor top structure frame and corresponding material distributing pipe sections and carrying outintegral spraying; prefabricating shipment cushion piers, sequentially and independently prefabricating a plurality of material distribution pipe sections, and then integrally closing the material distribution pipe sections; mounting an anchor chain and a pipe section accessory of a suction anchor, fixedly welding the shipment cushion piers and the suction anchor, and hoisting the shipment cushion piers and the suction anchor to a barge for fixing; and completing the shipment task of the suction anchor. According to the novel suction anchor pile prefabricating and shipping process, a verticalconstruction prefabricating process is adopted, so that the suction anchor pile assembling difficulty is lowered, and the technical requirements for ovality, assembling precision, staggered skin sizeand the like are met; a dock is used for overall construction, so tht site resources are fully utilized, and the resource utilization efficiency is improved; a gantry crane is used for ship loading work, so that the use of crawler cranes and floating cranes is reduced, the construction efficiency is improved, and the construction period is shortened.

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 ...

AI Technical Summary

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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