| 摘要: |
| 以带附属构件的海上风机三种固定式基础(单桩、高桩承台、导管架)为研究对象，通过物理模型试验研究在波浪和潮流流联合作用下，波高、水深、波流夹角对三种基础所受波流力的影响，并将试验值和Morison公式计算值进行比较，结果表明：(1)在波流联合作用下，波高、水深、波流夹角对各基础的水平总力影响程度各有不同，其中，波高影响最为显著，其次是水深和波流夹角，总体上波高、水深越大，基础所受水平总力越大。波高和波流夹角对单桩基础波流力的影响较高桩承台和导管架基础显著，水深对高桩承台基础波流力的影响较单桩和导管架基础显著。(2)波流夹角的影响相对复杂，最大水平总力均不是出现在波流同向的时候，而是出现波流存在一定夹角时，这可能是和附属构件的影响有关。(3)为保证设计安全同时又不偏于保守，各基础型式最大水平总力可在Morison公式按波流同向计算值的基础上乘以相应的波流夹角放大系数试验均值，根据试验数据，该系数单桩、高桩承台、导管架分别为1.23、1.14、1.17。 |
| 关键词: 海上风机基础 物理模型试验 波流力 波流夹角放大系数 Morison方程 |
| DOI： |
| 分类号:O35?????????????? |
| 基金项目:国家自然科学基金资助项目(52338008) |
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| HUAN Caiyun1,2 |
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Huan Caiyun
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中国电建集团华东勘测设计研究院有限公司
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| Abstract: |
| Taking three types of fixed foundations (single pile, high pile cap, and jacket) for offshore wind turbines with attached components as the research object, the effects of wave height, water depth, and wave current angle on the wave current forces acting on the three foundations under the combined action of wave and current were studied through physical model experiment. The experimental values were compared with the calculated values of the Morison formula. The results show that: (1) Under the combined action of wave and current, the influence of wave height, water depth, and angle between wave and current on the total horizontal force of each foundation varies, with wave height having the most significant impact, followed by water depth and angle between wave and current. Overall, the larger the wave height and water depth, the greater the total horizontal force on the foundation. The influence of wave height and wave current angle on the wave current force of single pile foundation is significant compared to that of pile cap and jacket foundation. The influence of water depth on the wave current force of high pile cap foundation is more significant than that of single pile and jacket foundation. (2) The influence of the angle between wave and current is relatively complex, and the maximum horizontal total force does not occur when the wave and current are in the same direction, but when there is a certain angle between the wave and current, which may be related to the influence of auxiliary components. (3) In order to ensure design safety while not being biased towards conservatism, the maximum horizontal total force of each foundation type can be multiplied by the corresponding amplification coefficient of the wave current angle based on the Morison formula in the same direction of wave and current. According to the experimental data, the coefficient for single pile, high pile cap, and jacket is 1.23, 1.14, and 1.17, respectively. |
| Key words: offshore wind turbine foundation physical modeling test wave and current force amplification coefficient of the wave current angle Morison formula |
