Pile scour feedback analysis method based on real-time vibration data

By extracting standardized vibration data from offshore wind turbines, a response mapping relationship between scour depth and equivalent soil stiffness was established. Then, a weighted fusion was performed using a mode switching weighting function, which solved the parameter coupling and large deformation problems in the monitoring of scour conditions of offshore wind turbine pile foundations and achieved high-precision evaluation across the entire range.

CN122197162APending Publication Date: 2026-06-12HUANENG RUDONG BAXIANJIAO OFFSHORE WIND POWER GENERATION CO LTD +2
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
HUANENG RUDONG BAXIANJIAO OFFSHORE WIND POWER GENERATION CO LTD
Filing Date
2026-04-15
Publication Date
2026-06-12

AI Technical Summary

⚠Technical Problem

Existing technologies for monitoring the scour status of offshore wind turbine pile foundations suffer from problems such as unsolvable physical parameter coupling and failure of linear theory during large deformation stages, leading to inaccurate assessment results.

⚗Method used

By acquiring the standardized vibration acceleration time history of offshore wind turbine measuring points, structural modal parameters and multidimensional nonlinear dynamic characteristics are extracted, a response mapping relationship between scour depth and soil equivalent stiffness is established, and weighted fusion is performed using a mode switching weight function to output the full-range scour state assessment results.

🎯Benefits of technology

It achieves high-precision assessment of the full-range scour state, solves the problems of scour parameter coupling and modal failure during large deformation, and provides reliability and robustness for structural safety assessment.

✦ Generated by Eureka AI based on patent content.

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Abstract

The application discloses a pile foundation scouring feedback analysis method based on real-time vibration data. The standardized vibration acceleration time history collected by a fan measuring point is acquired; structural modal parameters are extracted, a response mapping relationship thereof to scouring depth and soil equivalent stiffness is established, and a first evaluation result containing a probability distribution is output through inversion; multi-dimensional nonlinear dynamic characteristics are extracted, a scouring mechanical stage is identified according to a discrimination boundary, and a nonlinear characteristic strength index is quantified, and a second evaluation result is output; a mode switching weight function is constructed based on the index, the first and second evaluation results are weighted and fused, the scouring mechanical stage is taken as a physical constraint, and a full-range evaluation result is output. The application solves the problems of scouring parameter coupling and modal failure in a large deformation period, and realizes high-precision full-range scouring state evaluation.
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