Device for enhancing foundation stability without power in operation process of suction foundation and design method thereof
A technology of foundation stability and suction foundation, applied in the field of devices that enhance foundation stability and bearing capacity without power
Inactive Publication Date: 2020-03-27
SHANDONG UNIV OF SCI & TECH
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Problems solved by technology
[0006] In order to solve the above-mentioned problems existing in the service process of the existing suction foundation, the present invention provides a device for enhancing the stability and bearing characteristics of the suction foundation without power
Method used
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Embodiment Construction
[0021] combine Figure 1-Figure 3 , The present invention is a device for enhancing the stability of the foundation without power during the operation of the suction foundation. By transforming the upper and lower ends of the outer protection pipe 1 of the original transmission line, it becomes a good drainage pipe.
[0022] combine figure 2 A tee structure 3 is made on the outer protection pipe 1 of the original power transmission line near the seabed, so that the power transmission line can penetrate deep into the seabed through the side branch and seal it with a sealing plug 4 at the side port to ensure watertightness. The other branch is connected to the suction hole 6 when the suction foundation is installed.
[0023] combine image 3 , Install the deep groove bearing 11 at the top of the outer protection pipe of the power transmission line near the fan nacelle 8, so that the upper device and the nacelle can rotate at the same time in the horizontal direction.
[0024...
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A suction foundation can generate gradually accumulated passive negative pressure inside under the action of a load, so a seepage effect is caused, and then a water plug is formed in the suction foundation to cause adverse effects on the foundation, particularly in a soil body with a large permeability coefficient. The invention discloses a device for enhancing the foundation stability without power in the operation process of a suction foundation, and the device achieves the effects of protecting an electric wire and draining water by modifying the two ends of an outer protection pipe of a power transmission pipeline. The bottom end of the protection pipe is connected with a suction foundation drain hole, and the top end is connected with a water-cooled generator in a cabin. Additionally,a plastic pipe attached to the fan blades is arranged to form a rotatable drainage device. The plastic pipe rotates at a high speed along with the rapidly rotating fan blades, the air flow speed at the edge of the pipe is large, the pressure intensity is small, huge suction force is generated, water in the suction foundation can be pumped out through a pipeline, and therefore, the adsorption capacity of the suction foundation to the foundation is greatly improved. The device can improve the bearing capacity and the stability of the foundation, and meanwhile, the pumped water can cool the generator without additional power.
Description
technical field [0001] The invention relates to the technical field of marine foundation engineering, in particular to a suction foundation suitable for a seabed foundation of an offshore wind power project, and a device for enhancing the stability and bearing capacity of the foundation without power is added. Background technique [0002] With the rapid development of offshore wind farm construction in recent years, the basic design of offshore wind turbines has become an important topic in this field. At present, the main foundation structures used in offshore wind turbines are gravity foundation, single pile foundation, group pile foundation, suction foundation and so on. [0003] Gravity foundations are generally reinforced concrete structures with large volume and weight, relying on their own gravity to keep the fan vertical, and the applicable water depth is less than 10 m. The gravity-type foundation has simple structure, low cost and good stability, but due to its l...
Claims
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Login to View More IPC IPC(8): E02D27/42E02D27/52
CPCE02D27/425E02D27/52
Inventor 不公告发明人
Owner SHANDONG UNIV OF SCI & TECH