| 管友海，梁开新，杨照辉，刘少健，吕环宇，赵茹，赵猛.水流冲刷作用下海上基础的固化土防护效率研究[J].海洋工程,2025,(3):118~130 |
| 水流冲刷作用下海上基础的固化土防护效率研究 |
| Study on the protection efficiency of cured soil for offshore foundations under scouring effect |
| 投稿时间：2024-04-29 修订日期：2024-07-17 |
| DOI：10.16483/j.issn.1005-9865.2025.03.011 |
| 中文关键词: 海上风电 海上基础 固化土防护 数值模拟 防护效率 |
| 英文关键词:offshore wind power offshore foundation solidified soil protection numerical simulation protection efficiency |
| 基金项目:中国三峡新能源（集团）股份有限公司科研项目（ZPHX0118） |
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| 摘要点击次数: 7 |
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| 中文摘要: |
| 开展固化土对海上基础防护效率研究具有重要的实践意义。通过FLOW-3D软件模拟48组不同流速下不同临界希尔兹数θcr、防护范围、防护高度工况，揭示了3种因素对固化土防护效率的影响规律，并采用Origin软件拟合文中数据建立了θcr、防护高度与最大冲刷深度、防护效率的函数预测模型，最后对边缘冲刷现象进行类比分析。研究表明：防护效率与θcr呈明显正相关关系，随着θcr增加，不同流速下的固化土冲刷深度均有效降低，且降低速度存在差异；固化土防护效率随着防护范围、防护高度的增加而提高，提高范围分别为8%~19%和28%~39%，防护范围为1.5D且不小于0.4 m高度的固化土最适宜；建立的幂函数、指数函数模型能够准确预测结果；改变θcr对边缘冲刷深度影响不大，低流速冲刷下提高防护范围可以有效降低边缘冲刷，高流速冲刷下改变防护范围对其影响较小。 |
| 英文摘要: |
| The study of the protection efficiency of cured soil for offshore foundations has significant practical implications. Using the FLOW-3D software, 48 sets of different flow velocities under varying critical Shields numbers θcr, protection range, and protection height conditions were simulated to reveal the impact of these three factors on the protection efficiency of cured soil. The data were fitted using Origin software to establish a predictive model for the maximum scouring depth and protection efficiency as functions of θcr? and protection height. Additionally, an analogical analysis of edge scouring phenomena was conducted. The study indicates that the protection efficiency has a significant positive correlation with θcr?. As θcr ?increases, the scouring depth of cured soil under different flow velocities is effectively reduced, with the difference in reduction rate. The protection efficiency of cured soil increases with the expansion of protection range and height, with increases ranging from 8% to 19% and 28% to 39%, respectively. The most suitable cured soil has a protection range of 1.5D and a height of no less than 0.4 m. The established power and exponential function models can accurately predict the results. Changes in θcr? have little impact on the edge scouring depth. Under low flow velocity scouring, increasing the protection range can effectively reduce edge scouring, while under high flow velocity scouring, changes in protection range have minimal effects. |
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