Offshore wind power single pile foundation pile monitoring device

Abstract

The invention discloses a monitoring device for offshore wind power single pile foundation piles, which includes a single pile and a monitoring device installed on the single pile. The monitoring device includes: a data acquisition device for collecting monitoring data and transmitting it to a land server The dynamic inclinometer is located at the pile top of the single pile and the top of the fan; the vibration accelerometer is located at the inner wall of the pile at the top of the single pile; the inclinometer is arranged in different places along the main wind direction The inner side of the tower tube or the pile foundation of the elevation; the earth pressure gauge and the piezometer are installed in a paired manner along the main wind direction at different elevations from the mud surface on the outer wall of the single pile. The device monitors the stress-strain characteristics of the steel pipe pile foundation, pile-soil circumferential resistance and pore water pressure, jacket steel acceleration, tower inclination, buckling deformation, and fracture, uneven foundation settlement, steel structure corrosion and other potential faults. And it can automatically warn when the above hidden dangers occur, so as to provide reliable technical support for safe operation.

Description

technical field [0001] The invention relates to the technical field of offshore wind power foundation piles, in particular to a monitoring device for offshore wind power single pile foundation piles. Background technique [0002] Large-diameter single-pile foundation is an emerging and widely used wind power foundation form in my country's coastal areas, especially in the few wind farms that have been built and used. For important issues such as soil interaction, there is currently no large amount of specific and effective monitoring data for reference. [0003] In this regard, the p-y curve method is often used at home and abroad. This method is in good agreement with the measured results in analyzing the deformation of pile foundations under static loads, but it is quite different from the measured results in terms of dynamic loads. Underestimating the lateral deformation of the pile foundation; secondly, the horizontal bearing capacity of the single pile foundation is usu...

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Problems solved by technology

[0002] Large-diameter single-pile foundation is an emerging and widely used wind power foundation form in my country's coastal areas, especially in the few wind farms that have been built and used. For important issues such as soil interaction, there is currently no large amount of specific and effective monitoring data for reference

[0003] In this regard, the p-y curve method is often used at home and abroad. This method is in good agreement with the measured results in analyzing the deformation of pile foundations under static loads, but it is quite different from the measured results in terms of dynamic loads. Underestimating the lateral deformation of the pile foundation; secondly, the horizontal bearing capacity of the single pile foundation is usually controlled by the horizontal displacement of the pile top, and the p-y curve method specified in the API code is generally used in ocean engineering to

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