Gravity-type onshore/offshore wind turbine foundation with anchor rod
An offshore fan and gravity-type technology, applied in infrastructure engineering, construction, etc., can solve the problems of high cost, inconvenient installation, heavy weight, etc., and achieve the effect of convenient construction, high safety and low cost
Active Publication Date: 2015-04-29
HUIHONG ENG TECH CO LTD
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Problems solved by technology
The disadvantages are: seabed preparation is required in advance; due to its large size and weight, it is inconvenient to install; the applicable water depth range is too narrow, and as the water depth increases, its economy cannot be reflected, and the cost is higher than other types of foundations. to be high
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[0024] Such as figure 1 , figure 2 As shown, the height of the concrete cap is 9-15m, the diameter of the upper part of the cap is 10-16m, and the diameter of the lower part is 18-26m. Prestressed anchors. Among them: the concrete material of the concrete cap is divided into inner and outer layers, the outer layer is C15-C30 ordinary concrete, the inner layer is C40-C60 high-strength concrete and is wrapped by a corrugated steel cylinder in the form of a sandwich on both sides. The concrete cap can be prefabricated or cast in place. The anchor rods are divided into inner and outer rings, the inner ring is vertical, the number is 16-40, the best number is 22-26, the outer ring is inclined, the inclination angle is about 6°-12°, the best angle is 9 °, the number is 16-40, and the optimum number is 22-26. The ratio of the maximum (bottom surface) distance to the minimum (top) distance between two circles of bolts is about 9.
[0025] After the foundation placement is complet...
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The invention discloses a gravity-type onshore / offshore wind turbine foundation with an anchor rod, comprising a concrete bearing platform which is arranged on a foundation, wherein the pre-stressed anchor rod is arranged in the concrete bearing platform by means of penetrating through from top to bottom; and the lower end of the pre-stressed anchor rod is anchored in the foundation, and the upper end of the pre-stressed anchor rod is tensioned via prestress and then fixed on the concrete bearing platform. The concrete bearing platform is circular-table-shaped and divided into an inner layer and an outer layer; the outer layer is C15-C30 common concrete; the inner layer is C40-C60 high-strength concrete and wrapped by a corrugated steel barrel in the form of two-surface sandwich; and backfilled earth or plain concrete is filled in a cavity which is surrounded by the inner-layer concrete. The pre-stressed anchor rod is arranged in the outer-layer concrete, and arranged by means of being divided into an inner ring and an outer ring, and the inner-ring anchor rod is vertically arranged. The gravity-type onshore / offshore wind turbine foundation with the anchor rod is convenient for construction, low in cost, high in safety, and suitable for the foundation conditions of sand, clay, rock and the like.
Description
technical field [0001] The invention relates to an onshore / offshore fan foundation, in particular to a bolt gravity type onshore / offshore fan foundation. Background technique [0002] The foundation forms of the existing offshore wind turbines are different from those on land. According to the structure type, they are mainly divided into pillar type, gravity type, barrel type and suspension type. Domestic foundation selection mainly adopts pillar-type and gravity-type fan foundations. These wind turbines have complex basic structures, high technical difficulties, and high construction costs. Pillar foundations are suitable for locations where there are boulders in the seabed, where construction costs are high, time-consuming, and difficult to dismantle. The disadvantage of gravity foundations is that seabed preparation is required. Comprehensively considering the effects of water depth, seabed conditions, loads, construction difficulty, construction cost and other factors...
Claims
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IPC IPC(8): E02D27/12E02D27/14
Inventor 霍宏斌
Owner HUIHONG ENG TECH CO LTD