Evaluation of hydrodynamic forces on offshore wind power piles induced by submarine landslides at various impact depths
Xingsen Guo1
Xiaolei Liu2
Hong Zhang3
Junkai Sun4
Thianlai Goh5
Alessandro Leonardi6
1.Shandong Provincial Key Laboratory of Marine Engineering Geology and the Environment,Ocean University of China,Qingdao 266100,China;Department of Civil,Environmental and Geomatic Engineering,University College London,London WC1E 6BT,United Kingdom;Department of Engineering,University of Cambridge,Cambridge CB2 1PZ,United Kingdom;Sanya Oceanographic Institution,Ocean University of China,Sanya 572024,China;State Key Laboratory of Ocean Engineering,Shanghai Jiao Tong University,Shanghai 200240,China2.Shandong Provincial Key Laboratory of Marine Engineering Geology and the Environment,Ocean University of China,Qingdao 266100,China;Department of Civil,Environmental and Geomatic Engineering,University College London,London WC1E 6BT,United Kingdom;Sanya Oceanographic Institution,Ocean University of China,Sanya 572024,China3.College of Engineering,Ocean University of China,Qingdao 266100,China4.Shandong Provincial Key Laboratory of Marine Engineering Geology and the Environment,Ocean University of China,Qingdao 266100,China;Department of Civil,Environmental and Geomatic Engineering,University College London,London WC1E 6BT,United Kingdom5.Program Geology,Faculty of Science and Technology,Universiti Kebangsaan Malaysia,Bangi 43600,Malaysia6.Department of Civil and Structural Engineering,University of Sheffield,Sheffield S1 3JD,United Kingdom
摘要：The rapid growth of offshore wind farm construction requires reliable pile foundation designs that can withstand complex marine loads.However,current design practices for these foundations often neglect the potential threat of submarine debris flows,which can exert highly destructive forces.This study employs a CFD approach to simulate the effects of submarine debris flows on piles in intricate marine environments,with model accuracy validated against a series of laboratory experiments calculating lateral forces from debris flows.We investigate the impact of debris flows on piles across a range of Reynolds numbers,including variations in rheological properties,density,impact velocity,and initial debris flow heights.Our results reveal that the dominant force exerted by submarine debris flows on piles is primarily a horizontal drag force.We identify three distinct stages in the impact process and emphasize the peak drag force as the critical load on the pile.The study provides a comprehensive analysis of the mechanisms driving variations in drag force and highlights the nonuniform distribution of drag forces along the pile's length.The debris flow height significantly influences not only the magnitude of the peak drag force but also the action point location of this force along the pile.Finally,we propose quantifiable methods for evaluating the peak drag force coefficient and its action point,enhancing the design resilience of pile foundations against submarine debris flows.
机标关键词：evaluationforcesvariousimpactpowerdepthshydrodynamicinduced
论文发表日期：2025-12-31
在线出版日期：2026-01-30（本平台首次上网日期，不代表文献的发表时间）
页数：18( 300-317 )
英文信息