Offshore wind power truss concrete cylindrical foundation

Abstract

The invention relates to an offshore wind power truss concrete cylindrical foundation. The offshore wind power truss concrete cylindrical foundation comprises a polygonal cylinder wall which is formed by splicing a plurality of steel truss concrete combined cylinder wall modules of the same structure, the steel truss concrete combined cylinder wall module comprises module inner wrapping steel, module outer wrapping steel, vertical stiffening ribs, transverse stiffening ribs, inclined stiffening ribs and opposite-pull supports, concrete is filled between the module inner wrapping steel and the module outer wrapping steel, the inclined stiffening ribs are connected with the vertical stiffening ribs and the transverse stiffening ribs, and the opposite-pull supports are connected with the module inner wrapping steel and the module outer wrapping steel. The cylinder wall is of a concrete steel-clad structure, the cylinder wall cannot be bent in the negative pressure sinking process, the stability is good when the cylinder wall is in place, and the defects that the steel cylinder wall of a traditional cylindrical foundation is prone to being bent, and the stress of a connecting joint of the cylinder wall and a subdivision steel plate is large are overcome.

Description

technical field [0001] The invention relates to an offshore wind power foundation structure, in particular to an offshore wind power truss concrete tube foundation and a construction method. Background technique [0002] Based on the soft foundation conditions such as silt and silty clay in most of my country's offshore areas, in order to meet the requirements of foundation bearing capacity and foundation deformation, traditional pile foundations (such as single pile foundations and jacket foundations) are usually used. The traditional pile foundation forms Large hoisting ships and piling ships are required to assist in the construction. By hammering piles, the piles penetrate the weak soil layer and enter the better bearing layer. The cost is high and the construction period is long. [0003] With the increase of the unit capacity of offshore wind turbines, the use of traditional monopile and jacket foundations requires an increase in the size and material consumption of the...

AI Technical Summary

Problems solved by technology

However, the above-mentioned suction composite cylindrical foundation still has the following disadvantages: (1) The lower cylindrical body is made of thin-walled steel plate, and in order to avoid the buckling of the cylindrical wall when making the transition section on it, the foundation is manufactured, transported, installed, and submerged. There are certain risks; (2) The transition section and the load transmission method of the bottom plate are complex, and the lower structure of the tube foundation cannot be fully utilized; (3) The outer warehouse plate is too long to easily buckle during the negative pressure sinking process

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