| 摘要: |
| 基于FLOW-3D软件,开展了三组波高、三组波周期、五种挡板形式条件下的冲刷模拟试验,分析了不同工况下防波堤结构流场变化、海床冲刷地形变化情况。研究结果表明：在规则波作用下,波高变化对防波堤结构流场变化及海床冲刷地形变化影响程度较小。波周期则与防波堤结构周围的泥沙冲刷效率呈正相关,且影响程度较大。而波周期的不同也导致挡板开孔方式对海床冲刷地形的变化呈现不同的规律；当波周期为1.5s时，随着挡浪板开孔率的增加、挡板下部面积的增大，冲刷坑面积、体积逐渐减小，且呈线性分布；当其波周期T为2.0s、2.5时，随着挡板开孔率的增加、挡板下部面积的增大，冲刷面积、体积呈二次曲线分布。 |
| 关键词: 桩基透空式防波堤 挡浪板 FLOW-3D 群桩冲刷 |
| DOI： |
| 分类号:TV |
| 基金项目:国家重点研发计划；国家自然科学基金。 |
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| Research on the erosion of permeable breakwater of pile foundation under the action of regular waves |
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HUANG Shanshan1, WANG Zhenlu1,2, PAN Xinying1,2, LIANG Bingchen1,2, YANG Bo1
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1.College of Engineering,Ocean University of China;2.Shandong Provincial Key Laboratory of Ocean Engineering
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| Abstract: |
| Based on the FLOW-3D software, the scouring simulation tests under the conditions of three sets of wave heights, three groups of wave periods and five baffle forms were carried out, and the changes of the flow field of the breakwater structure and the seabed erosion topography under different working conditions were analyzed. The results show that the change of wave height has little influence on the change of flow field of breakwater structure and the change of seabed scouring topography under the action of regular waves. The wave period is positively correlated with the sediment scouring efficiency around the breakwater structure, and the influence is greater. However, the different wave periods also lead to different rules for the change of seabed scouring topography by the baffle opening method. When the wave period is 1.5s, with the increase of the opening ratio of the baffle and the increase of the lower area of the baffle, the area and volume of the scouring pit gradually decrease and show a linear distribution. When the wave period T is 2.0s and 2.5, with the increase of the opening ratio of the baffle and the increase of the lower area of the baffle, the scouring area and volume are distributed in a quadratic curve. |
| Key words: pile-based permeable breakwater wave baffle FLOW-3D Group pile scouring |
