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Composite test device and method for measuring dynamic impedance of bucket foundation of offshore wind turbine

A barrel-shaped foundation and composite test technology, which is applied in the test of basic structure, basic structure engineering, construction, etc., can solve the problems of lack of dynamic impedance model test and insufficient research of dynamic impedance, and achieve the effect of accurate test results

Inactive Publication Date: 2018-07-31
HOHAI UNIV
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Problems solved by technology

However, the research on the dynamic impedance of the barrel foundation is far from enough, especially the model test on the dynamic impedance is still very scarce, and in-depth research is urgently needed

Method used

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  • Composite test device and method for measuring dynamic impedance of bucket foundation of offshore wind turbine
  • Composite test device and method for measuring dynamic impedance of bucket foundation of offshore wind turbine
  • Composite test device and method for measuring dynamic impedance of bucket foundation of offshore wind turbine

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Embodiment Construction

[0064] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific preferred embodiments.

[0065] Such as figure 1 and figure 2 As shown, a compound test device for measuring the dynamic impedance of an offshore wind turbine barrel foundation includes an experiment box 10, a compound force loading device 20, a dynamic bending moment loading device 30, a servo electric cylinder controller 50, and a data acquisition and analysis device.

[0066] Such as figure 1 , figure 2 , image 3 , Figure 4 and Figure 8 As shown, the test box is preferably an iron box, and it has been treated with anti-rust, so it is not easy to be corroded. And the outer surface of the iron box is uniformly welded with several L-shaped reinforcing ribs 11 along its length direction, which can better improve the bearing capacity of the test box and increase the rigidity of the test box, improve the natural frequency of the test box, an...

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Abstract

The invention discloses a composite test device and method for measuring dynamic impedance of a bucket foundation of an offshore wind turbine. The composite test device comprises an experimental box,a composite force loading device, a dynamic bending moment loading device and a data acquisition and analysis device. The experimental box is filled with test sand and sea water, and a drain pipe is arranged at the bottom of the experimental box. The composite force loading device comprises a composite force loading frame, a vertical servo electric cylinder, a tilt servo electric cylinder, a vertical force sensor and a tilt force sensor. The dynamic bending moment loading device comprises a dynamic bending moment loading frame, a transverse servo electric cylinder, a transverse force sensor, aforce transmission structure, an A-shaped frame, a bending moment force sensor and a counterweight block. The top of the experimental box can be detachably connected with the composite force loadingframe or the dynamic bending moment loading frame. According to the composite test device and method for measuring the dynamic impedance of the bucket foundation of the offshore wind turbine, different external loads are applied to a bucket foundation model through two different types of cyclic load loading devices, the influencing factors and mechanisms of the dynamic impedance of the bucket foundation are studied, and the basis for the value of the dynamic impedance of the bucket foundation in the actual design process of the wind turbine is provided.

Description

technical field [0001] The invention relates to a test device and a test method, in particular to a composite test device and method for measuring the dynamic impedance of an offshore fan bucket foundation. Background technique [0002] With the use of fossil energy, the environmental problems brought about by it have become increasingly prominent, and many countries have begun to actively explore and develop renewable energy. As a representative of renewable energy, offshore wind energy has become the research focus of new energy development because of its characteristics of saving land resources, stable wind energy, no noise, and no pollution. According to the research data of the International Energy Agency (IEA), it is estimated that by 2030, the proportion of non-fossil energy in the world will increase to 23.8%. Renewable energy will be the fastest growing energy in the future, and the proportion of wind power will reach 11%, becoming the main force of renewable energ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D33/00
CPCE02D33/00
Inventor 栗珂林捷朱涛郑金海严士常
Owner HOHAI UNIV
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