大直径吸力桶基础水流局部冲刷数值模拟研究  

Numerical Simulation Study of Local Scouring of Large Diameter SuctionBucket Foundation Water Flow

作　　者：蒋光遒 龚匡敏 庄炜焕 王硕 李孟超 管友海[4] Jiang Guangqiu;Gong Kuangmin;Zhuang Weihuan;Wang Shuo;Li Mengchao;Guan Youhai(Three Gorges Group Fujian Energy Investment Co.,Ltd.,Fuzhou 350001,Fujian,China;Zhangpu Strait Power Generation Co.,Ltd.,Zhangzhou 363200,Fujian,China;Three Gorges Group of the Yangtze River of China Limited,Beijing 100038,China;School of Storage,Transport and Construction Engineering,China University of Petroleum(East China),Qingdao 266580,Shandong,China)

机构地区：[1]长江三峡集团福建能源投资有限公司,福建福州350001 [2]漳浦海峡发电有限公司,福建漳州363200 [3]中国长江三峡集团有限公司,北京100038 [4]中国石油大学(华东)储运与建筑工程学院,山东青岛266580

出　　处：《科技通报》2024年第11期70-74,80,共6页Bulletin of Science and Technology

基　　金：中国三峡新能源(集团)股份有限公司科研项目资助(ZPHX0118)。

摘　　要：基于福建省某海域项目典型海域水文地质资料,本文采用Flow 3D软件开展大直径吸力桶基础冲刷数值模拟,研究了不同尺寸比、不同桶径、水流流速对吸力桶基础冲刷特性的影响。结果表明:不同工况下吸力桶基础冲刷发展阶段类似,但是受水流影响。当水流流速v<2 m/s时,冲刷发展阶段可分为:快速冲刷-缓慢冲刷-冲刷平衡;当水流流速v≥2 m/s时,冲刷发展阶段可分为:快速冲刷-波动冲刷-冲刷平衡。并且桶基冲刷坑深度跟水流、桶径、尺寸比成正比。在水流作用下不同工况的吸力桶基础冲刷深度与时间具有较强的函数关系,据此可为实际工程提供参考。Based on the typical hydrogeological data of a sea area project in Fujian Province,Flow 3D software was used to carry out the numerical simulation of the scouring of large-diameter suction bucket foundations,and the effects of different size ratios,different bucket diameters,and water flow velocities on the scouring characteristics of suction bucket foundations were investigated.The results show that the stages of scour development at the base of the suction bucket are similar under different operating conditions,but are influenced by the water flow.When the water flow velocity v<2 m/s,the scour development stages can be divided into:fast scour-slow scour-scour equilibrium;When the water flow velocity v≥2 m/s,the stage of scour development can be divided into:rapid scouring-fluctuating scouring-scouring equilibrium.And the depth of the scouring pit of the bucket base is proportional to the water flow,bucket diameter,and the size ratio.The scouring depth of suction bucket base under different working conditions under the action of water flow has a strong functional relationship with time,according to which it can provide reference for the actual project.

关 键 词：吸力桶基础 局部冲刷 单向流 数值模拟 流速 

分 类 号：TK83[动力工程及工程热物理—流体机械及工程]