Tension leg platform integral type negative pressure type foundation and sinking penetrating method thereof

Abstract

The invention belongs to the ocean engineering structure foundation of an ocean engineering filed, relating to a tension leg platform integral type negative pressure type foundation. The foundation comprises four bucket foundations with the same size, shape and material which are foursquare distributed; the main bodies of each bucket foundation have the shape of a column; the bucket foundations are communicated with each other by four water-storing pipes which are arranged on the quadrate edge; electronic valves which can be controlled to be opened or closed in a way of wireless communicationmode are arranged at the connection positions between the each water-storing pipe and the top end of the bucket foundation; the center points of the four water-storing pipes are taken as top points, the foundation is internally connected with four oblique water-storing pipes which are also foursquare arranged; the each water-storing pipe and the oblique water-storing pipes are mutually connected.The invention simultaneously provides a sinking penetrating method which is used by the negative pressure type foundation. The bucket foundations can sink and penetrate at the sea floor in 24 hours, thus, the time of offshore construction is greatly shortened and is easily controlled.

Description

technical field [0001] The invention belongs to the foundation of marine engineering structures in the field of marine engineering, and relates to a tension leg platform foundation. Background technique [0002] The research on barrel foundation as a technology began in the 1950s, and it was initially applied to mooring suction anchor piles, which were successfully used in many mooring systems. In the 1990s, it began to be applied to the platform foundation. It was first used as the anchor of the tension leg platform, and then used as the foundation of the jacket platform. As the latest mobile oil recovery facility in the world, the barrel-shaped foundation platform is applicable to a wide range of soil quality, water depth and environmental loads, which can meet the requirements of developing my country's deep-sea marginal oilfields. The new barrel-shaped foundation platform is used for these marginal The development of oil fields has significant social and economic benefit...

AI Technical Summary

Problems solved by technology

[0005] At present, most of the barrel-shaped foundations at home and abroad are only used in shallow seas, and have not been applied to thousands of meters of water depth. The negative pressure environment prevents the barrel base from sinking to the bottom of the sea

Second, due to the water depth, it is difficult to ensure the accuracy of the sinking position for a single barrel sinking. After sinking, the relative position between the barrel foundations cannot be determined, so that the anchor cables cannot be guaranteed to be parallel; and it is difficult to control the state of the barrel foundation when it reaches the seabed , may require a long offshore construction time

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