| 湛江某海上风电桩基局部冲刷特征研究 |
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| 引用本文： | 潘冬冬,李健华,周 川,王 俊.湛江某海上风电桩基局部冲刷特征研究[J].海岸工程,2020,39(4):271-278. |
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| 作者姓名： | 潘冬冬 李健华 周 川 王 俊 |
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| 作者单位： | 中国能源建设集团 广东省电力设计研究院有限公司,广东 广州 510663;广东科诺勘测工程有限公司,广东 广州 510663,中国能源建设集团 广东省电力设计研究院有限公司,广东 广州 510663;广东科诺勘测工程有限公司,广东 广州 510663,中国能源建设集团 广东省电力设计研究院有限公司,广东 广州 510663;广东科诺勘测工程有限公司,广东 广州 510663,中国能源建设集团 广东省电力设计研究院有限公司,广东 广州 510663;广东科诺勘测工程有限公司,广东 广州 510663 |
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| 基金项目： | 广东省自然资源厅基金项目 |
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| 摘 要： | 海上风电场桩基局部冲刷是工程设计与运行阶段的重要参数之一。基于湛江某海上风电场桩基3次现场局部冲刷实测数据,进行冲刷坑最大深度、冲刷坑半径和冲淤变化特征的分析与研究;根据桩基局部冲刷经验公式,采用工程海域实测海洋水文动力学数据进行最大冲刷深度与冲刷半径的计算,并进行公式计算值的对比与分
析。结果表明:桩基础在防冲刷设施的保护下,3次实测最大冲刷深度基本稳定为4.0 m,最大冲刷深度与桩径之比为0.57。而经验公式的最大冲刷深度与桩径之比均超过了1.1,说明桩基防冲刷设施取得了一定的效果,冲刷坑半径的计算值与现场实测值吻合较好。建议海上风电场在运行阶段进一步加强桩基冲刷坑监测与防护。
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| 关 键 词： | 海上风电 桩基 局部冲刷深度 冲刷坑半径 |
Study on Local Scour Characteristics of Wind Power Pile Foundation in Offshore Wind Farm in Zhanjiang |
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| PAN Dong-dong,LI Jian-hu,ZHOU Chuan,WANG Jun.Study on Local Scour Characteristics of Wind Power Pile Foundation in Offshore Wind Farm in Zhanjiang[J].Coastal Engineering,2020,39(4):271-278. |
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| Authors: | PAN Dong-dong LI Jian-hu ZHOU Chuan WANG Jun |
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| Institution: | 1. China Energy Engineering Group Guangdong Electric Power Design Institute Co., Ltd., Guangzhou 510663, China;
2. Guangdong Kenuo Surveying Engineering Co.,Ltd., Guangzhou 510663, China |
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| Abstract: | Local scour of a pile foundation in offshore wind farm is one of the important parameters in engineering design and operational stage. Based on the local scour data measured in-situ 3 times at a pile foundation in an offshore wind farm in Zhanjiang, the maximum depth and radius of scour pits and the changing characteristics of scouring and silting are analyzed and studied. The maximum depth and radius of the scouring are calculated according to the empirical formula of local scour of pile foundation and by using marine hydrodynamic data measured in the engineering sea area, and then the calculated values are compared and analyzed. The results indicate that under the protection of scour-proofing facilities, the maximum scour depth of the pile foundation measured in-situ 3 times is stabilized basically at 4.0 m and the ratio of maximum scour depth to pile diameter is 0.57. The ratio of the maximum scour depth to the pile diameter calculated by using the empirical formula is greater than 1.1, indicating that the scour-proofing facilities for the pile foundation have a certain effect. The values calculated for the scour pit radius are in good agreement with those measured in-situ. It is therefore suggested that during the operational stage of an offshore wind farm the monitoring and protection of the scour pits of the pile foundation should be enhanced further. |
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| Keywords: | offshore wind power pile foundation local scour depth radius of scour pit |
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