Integrated analysis method for design, calculation, optimization and drawing of offshore wind power single pile foundation

Abstract

The invention relates to the technical field of basic design calculation optimization in offshore wind power energy engineering, and particularly discloses an integrated analysis method for offshore wind power single pile foundation design calculation optimization drawing. The method comprises the steps: according to basic information of a project, performing analysis on the basis of nonlinear finite elements, converting nonlinear characteristics between piles and soil in the single-pile foundation into linear springs through calculation, calculating and analyzing a static force, a dynamic force and fatigue working conditions of the single-pile foundation, performing optimization design on static force, dynamic force and fatigue working conditions of the single pile foundation by taking engineering cost as a target value, then extracting basic drawing information, and generating a drawing and engineering quantity. According to the method, linearization processing is carried out on complex offshore wind power nonlinear calculation analysis, the calculation accuracy is guaranteed, meanwhile, the reaction time of calculation is saved, and the nondeterminacy of nonlinear analysis is reduced.

Description

Technical field[0001]The present invention relates to the field of basic design calculation optimization technology in maritime wind power engineering, and in particular, the integrated analysis method for optimizing the map of the series of sea piles in offshore wind power.Background technique[0002]With global energy shortages, environmental pollution, climate warming and other problems have become increasingly prominent, my country's energy structure and development direction have also made significant adjustments. In the past ten years, the renewable energy such as wind power and solar energy has been vigorously developed in my country, especially on the wind power, and the total capacity of wind farm has been innovated. With the large development of land-on wind power, the wind power in the land is growing, and the development of offshore wind power has also begun to board the historical stage of green energy development. In recent years, many near-sea wind projects have been or...

AI Technical Summary

Problems solved by technology

Especially for offshore wind power foundation design, it requires users to have multi-disciplinary theoretical knowledge, which often takes several months or even more time for beginners to learn, which is obviously unsatisfactory for our design cycle

[0006] (2) The structure system of offshore wind power monopile foundation is relatively simple, but its environment is relatively complex (supporting effect on piles below sea mud surface, seawater environmental load, etc.), and for the support contact problem between piles and soil, generally The fixed constraints or linear spring constraints have a large difference in the calculation results; at the same time, if nonlinear constraints are used, the accuracy of the results often depends on the designer's experience, and the calculation time and convergence have a great impact

[0007] (3) For general finite element analysis, if the structure (model) is adjusted, the designer often needs to re-model, which takes a lot of time; and for offshore wind power projects, the basic engineering quantity often affects the cost of the entire project. It has a great influence, which requires the designer to have certain design experience, and at the same time, constantly correct and optimize the design results to achieve the goal of optimal engineering quantity.

This takes more time

[0008] (4) In addition to specialized offshore engineering software, after using finite element programs to analyze offshore wind power foundations, the output results are only structural internal force results (bending moment, shear force, axial force, deformation, etc.), and because the division of structural units is often The data is huge, and the user needs to perform post-processing analysis for each group of internal force structures according to the requirements of the code to meet the code requirements (such as the allowable stress ratio requirements of steel structure materials, pile foundation bearing capacity requirements, deformation requirements, fatigue damage degree or fatigue life requirements) , a huge workload

[0009] (5) For the final optimization result, the user needs to complete the design drawing of the drawing on this basis, which also requires the user to have certain engineering knowledge, and at the same time, the correctness and completeness of the design drawing are highly dependent on the designer characteristics, requiring designers to spend more time on drawing

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