山东海阳海上风电场桩基冲刷计算与选址  

Pile scour calculation and site selection for Haiyang offshore wind farm in Shandong

作　　者：王春阳[1] 刘攀 王起峰[1] 卢晓东[1] 王克磊 张泽华[3] WANG Chunyang;LIU Pan;WANG Qifeng;LU Xiaodong;WANG Kelei;ZHANG Zehua(Shandong Electric Power Engineering Consulting Institute Co.,Ltd,Jinan 250013,China;Haihe River,Huaihe River and Xiaoqinghe River Basin Water Conservancy Management and Service Center of Shandong Province,Jinan 250100,China;Institute of Oceanology,Chinese Academy of Sciences,Qingdao 266071,China)

机构地区：[1]山东电力工程咨询院有限公司,山东济南250013 [2]山东省海河淮河小清河流域水利管理服务中心,山东济南250100 [3]中国科学院海洋研究所,山东青岛266071

出　　处：《海洋湖沼通报》2023年第2期64-71,共8页Transactions of Oceanology and Limnology

基　　金：国家自然科学基金项目(41976166)。

摘　　要：针对海上风电桩基受波浪、海流长期冲刷而造成的局部冲刷问题。本文选取海阳海上风电场为研究区,基于实测表层沉积物、长期气象、波浪和潮流数据,通过利用桩基局部冲刷经验公式计算了海阳海上风电场区桩基在不同动力条件、布设方案和环境条件下的冲刷特征,进而分析了桩基选址的考虑因素。结果表明,风电场区为局部弱冲刷区域,在1年一遇波浪情况3个常波浪方向2 m和6 m桩墩直径的条件下,场区桩墩冲刷深度最大值2.23 m,冲刷深度范围0.62~2.25 m。桩柱直径也与冲刷深度呈正相关特征,风机直径为8 m时对区域冲淤环境影响较小。此外,由于风电场区波浪对于海床具有显著影响,应采用考虑风、浪、流较全面的公式计算桩基的冲刷深度,同时在桩墩的布设位置选择时应综合考虑布设区域海床稳定性、风能大小、桩柱的直径、海床土层稳定性等特征要素。The problem of local scouring caused by waves and the current scouring of offshore wind power pile foundations is important.Based on the measured surface sediment,long-term meteorological,wave and tidal data,the scour characteristics of pile foundations in Haiyang offshore wind farm area under different dynamic conditions,deployment schemes and environmental conditions were calculated by using the empirical equation of local scour of pile foundations.And then the consideration factors of pile foundation location were analyzed in this paper.The results showed that the wind farm area was a locally weak scouring area.The scour depth of the pile pier ranged from 0.62 m to 2.25 m with a maximum of 2.23 m under 3 constant wave directions of 2 m and 6 m pile pier diameter.Besides,the pile column diameter had a positive correlation with the scouring depth,and the fan diameter of 8 m had a negligible impact on the regional scouring environment.In addition,since the waves in the wind farm area had a significant impact on the seabed,the scour depth of the pile foundation should be calculated using a formula that incorporates wind,waves and currents.The characteristics of the seabed stability,wind energy,pile diameter,seabed soil stability and other characteristics should be comprehensively considered when choosing the location of the pile.

关 键 词：海上风电 桩基 局部冲刷深度 场址布设 

分 类 号：P7[天文地球—海洋科学]