An Innovative Approach to Predicting Scour Depth Around Foundations Under Combined Waves and Currents in Large-Scale Tests Based on Small-Scale Tests  

作　　者：HU Ruigeng LIU Hongjun LU Yao WANG Xiuhai SHI Wei 

机构地区：[1]College of Environmental Science and Engineering,Ocean University of China,Qingdao 266100,China [2]Key Laboratory of Marine Environment and Ecology,Ministry of Education,Qingdao 266100,China [3]Shandong Provincial Key Laboratory of Marine Environment and Geological Engineering,Qingdao 266100,China [4]School of Civil Engineering,Qingdao University of Technology,Qingdao 266033,China

出　　处：《Journal of Ocean University of China》2023年第3期637-648,共12页中国海洋大学学报（英文版）

基　　金：financially supported by the Fundamental Research Funds for the Central Universities(No.202061027);the National Natural Science Foundation of China(No.41572247)。

摘　　要：This study presents an innovative theoretical approach to predicting the scour depth around a foundation in large-scale model tests based on small-scale model tests under combined waves and currents.In the present approach,the hydrodynamic parameters were designed based on the Froude similitude criteria.To avoid the cohesive behavior,we scaled the sediment size based on the settling velocity similarity,i.e.,the suspended load similarity.Then,a series of different scale model tests was conducted to obtain the scour depth around the pile in combined waves and currents.The fitting formula of scour depth from the small-scale model tests was used to predict the results of large-scale tests.The accuracy of the present approach was validated by comparing the prediction values with experimental data of large-scale tests.Moreover,the correctness and accuracy of the present approach for foundations with complex shapes,e.g.,the tripod foundation,was further checked.The results indicated that the fitting line from small-scale model tests slightly overestimated the experimental data of large-scale model tests,and the errors can be accepted.In general,the present approach was applied to predict the maximum or equilibrium scour depth of the large-scale model tests around single piles and tripods.

关 键 词：SCOUR scour depth prediction Froude similarity scale effects combined waves and currents 

分 类 号：TM614[电气工程—电力系统及自动化] P75[天文地球—海洋科学] P731.2