Multifunctional comprehensive fan single-pile type foundation and dynamic damping adjusting method thereof

Abstract

The invention discloses a multifunctional comprehensive fan single-pile type foundation and a dynamic damping adjusting method thereof. The multifunctional comprehensive fan single-pile type foundation comprises a single-pile type foundation body with an operation platform, a hydraulic damper, a fixing frame and a fixing pile; the hydraulic damper is provided with a mounting position allowing the single-pile type foundation body to penetrate through; the single-pile type foundation body penetrates through the mounting position of the hydraulic damper and is fixedly connected to the hydraulic damper through the fixing frame; one end of the fixing pile is installed at the bottom of the hydraulic damper, the other end of the fixing pile is driven into a seabed to be fixed, and the fixing pile is used for fixing the hydraulic damper to the seabed; a plurality of one-way valves are arranged on the hydraulic damper, in the process of changing the internal volume of the hydraulic damper, external water can be injected into the hydraulic damper or existing water in the hydraulic damper can be discharged through the one-way valves; and meanwhile, water flow is adjusted, so that dynamic adjustment of damping is achieved, the structural stability of the single-pile type foundation is improved, and economical efficiency is improved.

Description

technical field [0001] The invention relates to the technical field of offshore wind turbine monopile foundations, in particular to a multifunctional comprehensive wind turbine single pile foundation and a damping dynamic adjustment method thereof. Background technique [0002] The foundation provides key support for wind turbines for at least 25 years. While being subjected to wind loads, wind turbine operating loads, waves, ocean currents and other loads, it also withstands the harsh test of the harsh offshore environment. At the same time, in the total investment of offshore wind farms, the basic cost accounts for 20%-30%, which is much higher than the similar proportion of onshore wind farms. Therefore, under the premise of in-depth analysis of the basic structure characteristics of different offshore wind turbines, the geology, wind energy resources, marine hydrology and other environmental conditions of the sea area where the wind farm is located, reasonable basic sele...

AI Technical Summary

Problems solved by technology

The following problems exist. In order to prevent the erosion around the pile, anti-scour treatment is carried out within a certain range along the single pile. The traditional anti-scour methods include sand quilt, riprap, bionic grass, solidified soil, etc., and the effect is still not obvious; at the same time, the structure The stiffness is small, the natural frequency is low, and it is easy to produce lateral deformation under the action of horizontal external force; the structural safety is greatly affected by seabed erosion; when there is relatively hard rock and soil within the depth of the pile sinking, it is usually necessary to drill the pile Installed to the design level, but the cost is higher

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