摘要
为解决海上风电单桩基础面临的冲刷问题,以江苏东台200MW海上风电项目为实证背景,采用淤泥固化土技术,对比分析固化土施工前后各冲刷指标的变化情况,以验证该技术的抗冲刷效果。结果表明:固化土施工后,桩基周边(0~15)m和[15~50]m半径范围内,平均海底高程有所提升,9号风机分别提升1.38 m和1.40 m,11号风机分别提升2.75 m和2.63 m;最大冲刷坑深度和冲刷量均显著降低,其中,9号风机最大坑深分别降低0.55 m和0.78 m,冲刷量分别减少1543 m 3和5200 m 3,11号风机最大坑深分别降低3.30 m和2.53 m,冲刷量分别减少1578 m 3和6850 m 3;海底起伏情况较施工前变化幅度更小,基础周边平整度良好,未出现明显冲刷现象;固化土整体展现出良好的抗冲刷性能,可有效维护桩基周围稳定性。
To address the erosion issues faced by monopile foundations in offshore wind power projects,the 200MW offshore wind power project in Dongtai,Jiangsu was used as an empirical background.The silt solidification soil technology was applied and the changes in erosion indicators before and after the solidified soil construction was compared to validate the erosion resistance of this technology.The results indicate that after the solidified soil construction,the average seabed elevation within the radius of 15 meters and 15 to 50 meters around the pile foundation increased,with the 9#turbine showing an increase of 1.38 meters and 1.40 meters,and the 11#turbine showing an increase of 2.75 meters and 2.63 meters,respectively.The maximum erosion pit depth and erosion volume were both significantly reduced,with the maximum pit depths of the 9#turbine decreasing by 0.55 meters and 0.78 meters,and the erosion volumes decreasing by 1543 m 3 and 5200 m 3,respectively;for the 11#turbine,the maximum pit depths decreased by 3.30 meters and 2.53 meters,with erosion volumes decreasing by 1578 m 3 and 6850 m 3,respectively.The changes in seabed undulation were less pronounced compared to before construction,the evenness around the foundation was good,and no obvious signs of erosion were observed.Overall,the solidified soil demonstrated excellent erosion resistance,effectively maintaining the stability of the pile foundation.
作者
徐荣
袁振
林科志
孙洪南
翟京
XU Rong;YUAN Zhen;LIN Kezhi;SUN Hongnan;ZHAI Jing(Jiangsu Guangheng New Energy Co.,Ltd.,Yancheng 224200,China;School of Automotive Engineering,Harbin Institute of Technology,Weihai 264209,China)
出处
《交通科技与经济》
2025年第4期45-50,共6页
Technology & Economy in Areas of Communications
基金
东台海上风电国家及电力行业优质工程(2019-DY18-1)
山东省自然科学基金项目(ZR2020MG020)。
关键词
海洋工程
海上风电
固化土技术
单桩基础
防冲刷
ocean engineering
offshore wind power
solidification soil technology
monopile foundations
erosion resistance
