首页|海上风电大直径单桩冲刷演变规律大比尺模型试验研究

海上风电大直径单桩冲刷演变规律大比尺模型试验研究

扫码查看
原文链接
  • 国家科技期刊平台
  • NETL
  • NSTL
  • 万方数据
波浪作用下,KC数(Keulegan-Carpenter Number)是影响海上风电单桩局部冲刷的主要无量纲参数.利用1∶14的大比尺物理模型试验,研究了不规则波作用下,海上风电大直径单桩局部冲刷形态、平衡冲刷深度和局部冲刷方量随KC数的变化规律.试验结果表明,在小KC数(KC<6)工况下,当KC数小于4时,冲刷主要发生在单桩两侧,冲刷深度较小;而当KC数超过4后,冲刷坑形态从扇形过渡到椭圆形,且最大冲刷深度显著增加.在大KC数工况下,通过对KC数重新定义改进了平衡冲刷深度计算方法,并给出了海上风电单桩局部平衡冲刷方量与KC数的关系,为单桩防护施工时的冗余量估算提供了预测方法.
Study on scouring evolution around large-diameter piles for offshore wind power in large wave flume
Under the action of waves,the KC number(Keulegan-Carpenter Number)is the main dimensionless parameter influencing local scour of offshore wind power monopiles.In this paper,a 1∶14 large-scale physical model test was used to study the variation of the local scour form,equilibrium scour depth and local scour volume of large-diameter piles for offshore wind power with the KC number under the action of irregular waves.The test results show that under the condition of small KC number(KC<6),when the KC number is less than 4,the scour mainly occurs on both sides of the single pile,and the scour depth is small;when the KC number exceeds 4,the shape of the scour pit changes from the sector to an oval,and the maximum scour depth increases significantly.In the case of large KC number,the calculation method of the balance scour depth is improved by redefining the KC number,and the relationship between the local balance scour volume and the KC number is given,which can provide a forecasting method for the redundancy during the single pile protection construction.

KC numberirregular wavelarge wave flume testbalance scour depthlocal scour volume

颜云、张二林、曾志煜、曾东

展开 >

广东粤电湛江风力发电有限公司,湛江 524000

天津水运工程勘察设计院有限公司,天津 300456

KC数 不规则波 大水槽试验 平衡冲刷深度 局部冲刷方量

外罗海上风电场新型桩基冲刷防护装置研发及应用项目天津水运工程勘察设计院有限公司科研创新基金中央级公益性科研院所基本科研业务费专项中央级公益性科研院所基本科研业务费专项国家重点研发计划

YD/ZJG-21-048SJY202110TKS20220301TKS202101022022YFE0104500

2024

水道港口
交通部天津水运工程科学研究所

水道港口

CSTPCD
影响因子：0.348
ISSN：1005-8443
年,卷(期)：2024.45(2)
  • 19