考虑土体蠕变的海上风力机桶型基础长期沉降计算方法研究

寇海磊; 张洪睿; 陆佳清; 王彦升; 安兆暾

doi:10.19912/j.0254-0096.tynxb.2024-1664

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太阳能学报 ›› 2026, Vol. 47 ›› Issue (1) : 692-700. DOI: 10.19912/j.0254-0096.tynxb.2024-1664

考虑土体蠕变的海上风力机桶型基础长期沉降计算方法研究

寇海磊, 张洪睿, 陆佳清, 王彦升, 安兆暾

作者信息 +

STUDY ON CALCULATION METHOD OF LONG-TERM SETTLEMENT OF OFFSHORE WIND TURBINE BUCKET FOUNDATION CONSIDERING SOIL CREEP

Kou Hailei, Zhang Hongrui, Lu Jiaqing, Wang Yansheng, An Zhaotun

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摘要

基于现有的黏土蠕变及基础荷载传递相关理论研究,提出一种预测黏土中导管架桶型基础服役期间长期沉降及累计倾角的新计算方法,该方法能充分考虑海上风力机服役期间各阶段沉降过程中产生的土体蠕变,更加准确地预测基础的沉降量。通过有限元软件PLAXIS中的软土蠕变土体本构建立数值模型,并将数值模拟结果和理论计算结果进行比较,结果表明该方法能对黏土中不同长径比L/D的单桶基础的竖向沉降及不同桶间距和桶直径之比S/D的导管架桶型基础的沉降及累计倾角进行准确预测,相对误差在10%以内。最后,总结归纳不同条件下桶型基础的沉降及累计倾角的发展变化规律,验证新方法对整个沉降过程预测的合理性。

Abstract

Based on the existing theoretical studies related to clay creep and foundation load transfer, this paper proposed a new calculation method for prediction of long-term settlement and cumulative inclination of conduit rack barrel foundation in clay during service. The method is able to more accurately predict the settlement of foundations by fully considering the soil creep that occurs during the various stages of settlement during the service life of offshore wind turbines. The numerical model was established by soft creep soil constitutive model in finite element software PLAXIS, and the numerical simulation results were compared with the theoretical calculations. The results show that the calculation method is able to accurately predict the vertical settlement of single-barrel foundations with different L/D and the settlement and cumulative inclination of conduit rack barrel foundations with different S/D in clayey soils, with the relative error within 10%. The development and change rules of the settlement and cumulative inclination of the barrel foundation under different conditions are summarised, and the reasonableness of the new method for the prediction of the whole settlement process is analysed.

导出引用

寇海磊, 张洪睿, 陆佳清, 王彦升, 安兆暾. 考虑土体蠕变的海上风力机桶型基础长期沉降计算方法研究[J]. 太阳能学报. 2026, 47(1): 692-700 https://doi.org/10.19912/j.0254-0096.tynxb.2024-1664

Kou Hailei, Zhang Hongrui, Lu Jiaqing, Wang Yansheng, An Zhaotun. STUDY ON CALCULATION METHOD OF LONG-TERM SETTLEMENT OF OFFSHORE WIND TURBINE BUCKET FOUNDATION CONSIDERING SOIL CREEP[J]. Acta Energiae Solaris Sinica. 2026, 47(1): 692-700 https://doi.org/10.19912/j.0254-0096.tynxb.2024-1664

中图分类号： TU473

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