水利水运工程学报2024,Issue(5) :103-112.DOI:10.12170/20240327003

规则波作用下桩基透空型防波堤的冲刷研究

Scouring study of pile foundation perforated breakwater under regular wave action

黄姗姗 王振鲁 潘新颖 梁丙臣 杨博
水利水运工程学报2024,Issue(5) :103-112.DOI:10.12170/20240327003

规则波作用下桩基透空型防波堤的冲刷研究

Scouring study of pile foundation perforated breakwater under regular wave action

黄姗姗 1王振鲁 2潘新颖 2梁丙臣 2杨博1
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作者信息

  • 1. 中国海洋大学 工程学院,山东 青岛 266100
  • 2. 中国海洋大学 工程学院,山东 青岛 266100;山东省海洋工程重点实验室,山东 青岛 266100
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摘要

基于FLOW-3D软件,开展了 3组波高、3组波周期、5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.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.不同的波周期会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 1.5 s时,随着挡浪板开孔率的增加、挡板下部面积的增大,冲刷坑面积及体积逐渐减小,且呈线性分布;当波周期为 2.0、2.5 s时,冲刷面积及体积呈二次曲线分布.

Abstract

Based on the FLOW-3D software,scour simulation experiments were conducted under the conditions of 3 sets of wave heights,3 sets of wave periods,and 5 types of baffle forms.The study analyzed the changes in the flow field around the breakwater structure and the changes in seabed scouring topography under different working conditions.The results indicate that under the action of regular waves,the variation in wave height has a minor impact on the changes in the flow field around the breakwater structure and the changes in seabed scouring topography.In contrast,the wave period is positively correlated with the efficiency of sediment scour around the breakwater structure,having a more significant impact.Different wave periods lead to different patterns in the changes in seabed scouring topography due to the way the baffles are opened.When the wave period is 1.5 s,with the increase of the baffle open rate and the enlargement of the area at the bottom of the baffle,the area and volume of the scour pit gradually decrease,displaying a linear distribution;when the wave period is 2.0 and 2.5 s,the area and volume of scouring show a quadratic curve distribution.

关键词

桩基透空式防波堤/挡浪板/群桩冲刷

Key words

pile foundation perforated breakwater/baffle plate/group pile scouring

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基金项目

国家重点研发计划项目(2021YFB2601100)

国家自然科学基金资助项目(52101338)

出版年

2024
水利水运工程学报
南京水利科学研究院 水利部交通运输部国家能源局

水利水运工程学报

CSTPCDCSCD北大核心
影响因子:0.756
ISSN:1009-640X
参考文献量17
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