系泊方式对多孔浮式防波堤波浪衰减影响的对比实验研究

IF 4.5 2区 工程技术 Q1 ENGINEERING, CIVIL
Kaiqing Luo, Yiyong Dong, Jing Yuan
{"title":"系泊方式对多孔浮式防波堤波浪衰减影响的对比实验研究","authors":"Kaiqing Luo,&nbsp;Yiyong Dong,&nbsp;Jing Yuan","doi":"10.1016/j.coastaleng.2025.104823","DOIUrl":null,"url":null,"abstract":"<div><div>Floating breakwaters are increasingly used for coastal protection, especially in deep-water environments where traditional fixed breakwaters are impractical. The performance of porous floating breakwaters (PFBs) is highly dependent on their mooring systems, which has not been thoroughly investigated to date. This study presents a comparative experimental investigation of four mooring systems, i.e., fixed, pile-restrained, catenary, and taut, for PFBs, focusing on their wave transmission coefficients (<span><math><msub><mrow><mi>K</mi></mrow><mrow><mi>t</mi></mrow></msub></math></span>) and motion response (heave, surge and pitch). The PFB, constructed from cubically packed stainless-steel spheres, was subjected to periodic waves with varying steepness and ratio of width (<span><math><mi>B</mi></math></span>) to wave length (<span><math><mi>L</mi></math></span>). Fixed mooring, with no dynamic response, provided good wave attenuation, especially when fully submerged (<span><math><mrow><msub><mrow><mi>K</mi></mrow><mrow><mi>t</mi></mrow></msub><mo>≈</mo><mn>0</mn><mo>.</mo><mn>5</mn></mrow></math></span> for <span><math><mrow><mi>B</mi><mo>/</mo><mi>L</mi><mo>≥</mo><mn>0</mn><mo>.</mo><mn>18</mn></mrow></math></span>). Pile-restrained mooring, allowing vertical motion, performed comparably to emerged fixed mooring, with minimal impact from heave motion. Catenary mooring, characterized by high compliance, exhibited poor performance for long waves (<span><math><mrow><msub><mrow><mi>K</mi></mrow><mrow><mi>t</mi></mrow></msub><mo>&gt;</mo><mn>0</mn><mo>.</mo><mn>8</mn></mrow></math></span> for <span><math><mrow><mi>B</mi><mo>/</mo><mi>L</mi><mo>&lt;</mo><mn>0</mn><mo>.</mo><mn>3</mn></mrow></math></span>) due to large surge and heave motions. Taut mooring, with high stiffness due to pre-tensioned mooring chains, demonstrated superior attenuation when fully submerged, outperforming fixed mooring in some cases. However, its performance degraded when the PFB was not fully submerged and without the pre-tension. The study highlights the critical role of restricting translational motions (surge and heave) in enhancing wave dissipation. Submergence was also found to be a key factor, with fully submerged PFBs dissipating more energy. These findings provide valuable insights for optimizing mooring systems in practical applications.</div></div>","PeriodicalId":50996,"journal":{"name":"Coastal Engineering","volume":"202 ","pages":"Article 104823"},"PeriodicalIF":4.5000,"publicationDate":"2025-08-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Impact of mooring configurations on wave attenuation of porous floating breakwater: A comparative experimental study\",\"authors\":\"Kaiqing Luo,&nbsp;Yiyong Dong,&nbsp;Jing Yuan\",\"doi\":\"10.1016/j.coastaleng.2025.104823\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><div>Floating breakwaters are increasingly used for coastal protection, especially in deep-water environments where traditional fixed breakwaters are impractical. The performance of porous floating breakwaters (PFBs) is highly dependent on their mooring systems, which has not been thoroughly investigated to date. This study presents a comparative experimental investigation of four mooring systems, i.e., fixed, pile-restrained, catenary, and taut, for PFBs, focusing on their wave transmission coefficients (<span><math><msub><mrow><mi>K</mi></mrow><mrow><mi>t</mi></mrow></msub></math></span>) and motion response (heave, surge and pitch). The PFB, constructed from cubically packed stainless-steel spheres, was subjected to periodic waves with varying steepness and ratio of width (<span><math><mi>B</mi></math></span>) to wave length (<span><math><mi>L</mi></math></span>). Fixed mooring, with no dynamic response, provided good wave attenuation, especially when fully submerged (<span><math><mrow><msub><mrow><mi>K</mi></mrow><mrow><mi>t</mi></mrow></msub><mo>≈</mo><mn>0</mn><mo>.</mo><mn>5</mn></mrow></math></span> for <span><math><mrow><mi>B</mi><mo>/</mo><mi>L</mi><mo>≥</mo><mn>0</mn><mo>.</mo><mn>18</mn></mrow></math></span>). Pile-restrained mooring, allowing vertical motion, performed comparably to emerged fixed mooring, with minimal impact from heave motion. Catenary mooring, characterized by high compliance, exhibited poor performance for long waves (<span><math><mrow><msub><mrow><mi>K</mi></mrow><mrow><mi>t</mi></mrow></msub><mo>&gt;</mo><mn>0</mn><mo>.</mo><mn>8</mn></mrow></math></span> for <span><math><mrow><mi>B</mi><mo>/</mo><mi>L</mi><mo>&lt;</mo><mn>0</mn><mo>.</mo><mn>3</mn></mrow></math></span>) due to large surge and heave motions. Taut mooring, with high stiffness due to pre-tensioned mooring chains, demonstrated superior attenuation when fully submerged, outperforming fixed mooring in some cases. However, its performance degraded when the PFB was not fully submerged and without the pre-tension. The study highlights the critical role of restricting translational motions (surge and heave) in enhancing wave dissipation. Submergence was also found to be a key factor, with fully submerged PFBs dissipating more energy. These findings provide valuable insights for optimizing mooring systems in practical applications.</div></div>\",\"PeriodicalId\":50996,\"journal\":{\"name\":\"Coastal Engineering\",\"volume\":\"202 \",\"pages\":\"Article 104823\"},\"PeriodicalIF\":4.5000,\"publicationDate\":\"2025-08-08\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Coastal Engineering\",\"FirstCategoryId\":\"5\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S0378383925001280\",\"RegionNum\":2,\"RegionCategory\":\"工程技术\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"ENGINEERING, CIVIL\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Coastal Engineering","FirstCategoryId":"5","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0378383925001280","RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"ENGINEERING, CIVIL","Score":null,"Total":0}
引用次数: 0

摘要

浮动防波堤越来越多地用于海岸保护,特别是在深水环境中,传统的固定防波堤是不切实际的。多孔浮式防波堤(PFBs)的性能高度依赖于其系泊系统,迄今为止尚未对其进行深入研究。本研究对固定系泊、桩约束系泊、悬链线系泊和拉紧系泊四种系泊系统进行了对比实验研究,重点研究了它们的波传递系数(Kt)和运动响应(升沉、浪涌和俯仰)。PFB由立方体填充的不锈钢球体构成,经受不同陡峭度和宽度(B)与波长(L)之比的周期波。固定系泊无动力响应,对波浪的衰减效果较好,特别是在完全淹没时(当B/L≥0.18时,Kt≈0.5)。桩约束系泊,允许垂直运动,与出现的固定系泊相比,受升沉运动的影响最小。悬链网系泊具有高顺应性,但由于浪涌和升沉运动较大,在长波(B/L<;0.3时Kt>;0.8)下性能较差。绷紧系泊,由于锚链的预张拉而具有高刚度,在完全淹没时表现出更好的衰减,在某些情况下优于固定系泊。然而,当PFB未完全浸入水中且没有预张力时,其性能下降。该研究强调了限制平动运动(浪涌和升沉)对增强波浪耗散的关键作用。淹没也是一个关键因素,完全淹没的pfb消耗更多的能量。这些发现为在实际应用中优化系泊系统提供了有价值的见解。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Impact of mooring configurations on wave attenuation of porous floating breakwater: A comparative experimental study
Floating breakwaters are increasingly used for coastal protection, especially in deep-water environments where traditional fixed breakwaters are impractical. The performance of porous floating breakwaters (PFBs) is highly dependent on their mooring systems, which has not been thoroughly investigated to date. This study presents a comparative experimental investigation of four mooring systems, i.e., fixed, pile-restrained, catenary, and taut, for PFBs, focusing on their wave transmission coefficients (Kt) and motion response (heave, surge and pitch). The PFB, constructed from cubically packed stainless-steel spheres, was subjected to periodic waves with varying steepness and ratio of width (B) to wave length (L). Fixed mooring, with no dynamic response, provided good wave attenuation, especially when fully submerged (Kt0.5 for B/L0.18). Pile-restrained mooring, allowing vertical motion, performed comparably to emerged fixed mooring, with minimal impact from heave motion. Catenary mooring, characterized by high compliance, exhibited poor performance for long waves (Kt>0.8 for B/L<0.3) due to large surge and heave motions. Taut mooring, with high stiffness due to pre-tensioned mooring chains, demonstrated superior attenuation when fully submerged, outperforming fixed mooring in some cases. However, its performance degraded when the PFB was not fully submerged and without the pre-tension. The study highlights the critical role of restricting translational motions (surge and heave) in enhancing wave dissipation. Submergence was also found to be a key factor, with fully submerged PFBs dissipating more energy. These findings provide valuable insights for optimizing mooring systems in practical applications.
求助全文
通过发布文献求助,成功后即可免费获取论文全文。 去求助
来源期刊
Coastal Engineering
Coastal Engineering 工程技术-工程:大洋
CiteScore
9.20
自引率
13.60%
发文量
0
审稿时长
3.5 months
期刊介绍: Coastal Engineering is an international medium for coastal engineers and scientists. Combining practical applications with modern technological and scientific approaches, such as mathematical and numerical modelling, laboratory and field observations and experiments, it publishes fundamental studies as well as case studies on the following aspects of coastal, harbour and offshore engineering: waves, currents and sediment transport; coastal, estuarine and offshore morphology; technical and functional design of coastal and harbour structures; morphological and environmental impact of coastal, harbour and offshore structures.
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
确定
请完成安全验证×
copy
已复制链接
快去分享给好友吧!
我知道了
右上角分享
点击右上角分享
0
联系我们:info@booksci.cn Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号:604180095
Book学术官方微信