Device for improving floating transportation water sealing and negative pressure sinking stability of bucket foundation

Abstract

The invention relates to a device for improving the floating transportation water sealing and negative pressure sinking stability of a bucket foundation. The device is used for auxiliary construction of offshore wind power foundation structures and comprises the bucket foundation, top cover anchoring blocks, anchoring ropes, plumb heavy blocks and water seepage interlayers. A circular bin body is arranged in the middle of the bucket foundation. A plurality of bin dividing plates are distributed on the periphery of the bucket foundation in the radial shape to form a trapezoidal bin body. The top cover anchoring blocks are located at the lower side of a top cover of the bucket foundation, and the lower portion of each top cover anchoring block is connected with one corresponding anchoring rope. The lower end of each anchoring rope is connected with the corresponding plumb heavy block. The water seepage interlayers are attached to the corresponding plumb heavy blocks. By the adoption of the device for improving the floating transportation water sealing and negative pressure sinking stability of the bucket foundation, water body impedance of the bucket foundation under the wind sea swinging action is effectively enhanced, the bucket foundation is forced to achieve the effect that gas in a bucket cannot quickly exchange with the outside water body in the shaking process, gas tightness of the bucket foundation in the floating transportation process is guaranteed, the floating transportation water sealing stability is enhanced, and safety performance of the bucket foundation in the floating transportation process is ensured. In addition, the device is simple in structure, convenient to design, manufacture and install, low in cost and high in practicability.

Description

technical field [0001] The invention relates to an auxiliary device for construction of an offshore wind power foundation structure, which is a device capable of improving the floating capacity and negative pressure sinking capacity of a cylindrical foundation. Background technique [0002] The cylindrical foundation structure is simple and light, easy to manufacture, and can be used for fast towing construction and negative pressure subsidence construction. Compared with the traditional pile foundation, the wide and shallow barrel foundation has good resistance to horizontal load and overturning, and the cost of manufacture and construction is lower. It is currently being gradually used in various marine structures such as offshore wind power, and has achieved good economic benefits. [0003] However, there are two significant problems in the construction of barrel foundations. For wide and shallow cylindrical foundations, the method of charging and maintaining pressure (...

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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