A device for improving the stability of floating water seal and negative pressure sinking of cylindrical foundation

Abstract

A device for improving the stability of floating water seal and negative pressure sinking of a cylindrical foundation, which is used for auxiliary construction of offshore wind power infrastructure, including a cylindrical foundation, a roof anchor block, an anchor rope, a plumb weight, and a water seepage barrier The central part of the cylindrical foundation is a circular silo body, and a number of sub-silo boards are radially distributed around the periphery to form a trapezoidal silo body. The top cover anchoring block is located on the lower side of the top cover of the cylindrical foundation. The lower part is connected with an anchor rope, and the lower end of the anchor rope is connected Plumb weight, with a water seepage barrier attached to the plumb weight. The invention effectively enhances the water resistance of the cylindrical foundation under the swaying of wind and waves, forces the gas in the cylindrical foundation to be unable to exchange with the external water rapidly when the cylindrical foundation is swayed, ensures the air tightness during the floating process of the cylindrical foundation, and enhances the floatation. The stability of the water seal ensures the safety performance of the cylindrical foundation during the floating process; in addition, the device has a simple structure, is very convenient to design, manufacture and install, and has low cost and strong practicability.

Description

technical field [0001] The invention relates to an auxiliary device for the construction of an offshore wind power foundation structure, which is a device which can improve the floating capacity and negative pressure sinking capacity of a cylindrical foundation. Background technique [0002] The tubular base structure is simple and lightweight, easy to manufacture, and can be used for rapid towing construction and negative pressure sinking construction. Compared with the traditional pile foundation, the wide and shallow cylindrical foundation has good resistance to horizontal load and overturning, and the cost of production and construction is low. At present, it is gradually used in various marine structures such as offshore wind power. good economic benefits. [0003] However, there are two significant problems in the construction of tubular foundations. For wide and shallow cylindrical foundations, the (air pressure) method of inflating and maintaining pressure in the c...

AI Technical Summary

Problems solved by technology

However, due to the loose structure of the soil, if the pressure is not properly controlled when the negative pressure is extracted, it is easy to cause piping or other damage to the soil, which will affect the sinking safety of the cylindrical foundation and even affect the safe operation of the later structure

Obviously, the above two problems have greatly impacted the advantages of rapid construction of the cylindrical foundation, and greatly restricted its application conditions in actual engineering

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