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清华大学学报(自然科学版)  2022, Vol. 62 Issue (9): 1401-1407    DOI: 10.16511/j.cnki.qhdxxb.2022.21.005
  堆石混凝土 本期目录 | 过刊浏览 | 高级检索 |
海上风电单桩胶结抛石体防冲刷措施模型试验研究
王卫1, 王百智2,3, 陈松贵2, 闫俊义4, 金峰5, 江朝华3
1. 中国长江三峡集团有限公司 科学技术研究院, 北京 100038;
2. 交通运输部天津水运工程科学研究所, 天津 300456;
3. 河海大学 港口航道与近海工程学院, 南京 210098;
4. 中国三峡新能源(集团)股份有限公司 技术经济中心, 北京 101100;
5. 清华大学 水沙科学与水利水电工程国家重点实验室, 北京 100084
Model test investigation of offshore wind power monopile scour protection measures based on cemented riprap underwater
WANG Wei1, WANG Baizhi2,3, CHEN Songgui2, YAN Junyi4, JIN Feng5, JIANG Chaohua3
1. Institute of Science and Technology, China Three Gorges Corporation, Beijing 100038, China;
2. Tianjin Research Institute of Water Transport Engineering, Tianjin 300456, China;
3. College of Harbour, Coastal and Offshore Engineering, Hohai University, Nanjing 210098, China;
4. China Three Gorges Renewables (Group) Co., Ltd., Beijing 101100, China;
5. State Key Laboratory of Hydroscience and Engineering, Tsinghua University, Beijing 100084, China
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摘要 水下胶结块石技术利用水下自护砂浆或混凝土的抗分散性和高流动性,填充块石间隙,形成具有一定结构强度的胶结体。该文基于水下胶结块石技术,提出海上风电单桩胶结抛石体防冲刷措施,并采用1∶13的大比尺波流物理模型试验,研究了桩周胶结抛石体抗冲刷性能。试验结果表明,采用梅花式多点浇注方式,能够将桩周抛石体胶结固化成完整的胶结抛石体防护结构;在重现期50和100 a的极端波流条件下,无防护的单桩桩周土体的最大冲刷深度分别为4.00和6.24 m,冲刷坑宽度分别为6.50和13.75 m,采用胶结抛石体防护结构后,桩周土体最大冲刷深度分别为2.96和4.42 m,冲刷坑宽度分别为2.65和4.55 m;同时,胶结抛石体结构自身无明显破坏。
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王卫
王百智
陈松贵
闫俊义
金峰
江朝华
关键词 海上风电单桩水下胶结块石大比尺试验    
Abstract:Cemented riprap underwater technology uses good antidispersion performance and high-fluidity characteristics of underwater self-protecting concrete or mortar to fill the gaps between underwater blocks to form cement with a definite structural strength. This paper covers the first instance of cemented riprap underwater technology being applied to the field of scour protection for offshore wind power monopile foundations. Based on the cemented riprap underwater technology, this paper proposes anti-scouring measures for offshore wind power monopile rock-filled concrete, and uses a 1:13 large-scale wave current physical model test to study the anti-scouring performance of underwater structure around piles. Tests have shown that the plum-shaped pouring method can form a complete cemented riprap underwater protective structure. This protective structure can maintain good integrity and stability. Under extreme wave and current conditions with a return period of 50 and 100 years, the maximum scour depths of the sand around the monopile are 4.00 and 6.24 m, and the scour pit widths are 6.50 and 13.75 m, respectively. After the cemented riprap underwater protective structure, the maximum scour depths of the soil around the pile are 2.96 and 4.42 m, and the scour pit widths are 2.65 and 4.55 m, respectively. The above results provide new ideas for the protection measures and scour restoration of offshore wind power monopile foundations.
Key wordsoffshore wind power    monopile    cemented riprap underwater    large-scale test
收稿日期: 2021-10-16      出版日期: 2022-08-18
基金资助:陈松贵,副研究员,E-mail:chensg05@163.com
引用本文:   
王卫, 王百智, 陈松贵, 闫俊义, 金峰, 江朝华. 海上风电单桩胶结抛石体防冲刷措施模型试验研究[J]. 清华大学学报(自然科学版), 2022, 62(9): 1401-1407.
WANG Wei, WANG Baizhi, CHEN Songgui, YAN Junyi, JIN Feng, JIANG Chaohua. Model test investigation of offshore wind power monopile scour protection measures based on cemented riprap underwater. Journal of Tsinghua University(Science and Technology), 2022, 62(9): 1401-1407.
链接本文:  
http://jst.tsinghuajournals.com/CN/10.16511/j.cnki.qhdxxb.2022.21.005  或          http://jst.tsinghuajournals.com/CN/Y2022/V62/I9/1401
  
  
  
  
  
  
  
  
  
  
  
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