船舶尾流作用对抛石基床冲刷稳定性的影响研究  

Study on scouring stability of rubble bed with effect of ship stern flow

作　　者：张宝华[1] 王元战[2] 孙建军[2] 

机构地区：[1]交通部天津水运工程科学研究所水工构造物检测,诊断与加固技术交通行业重点实验室,天津300456 [2]天津大学建筑工程学院,天津300072

出　　处：《水道港口》2010年第5期416-420,共5页Journal of Waterway and Harbor

基　　金：西部交通建设科技项目(2009328000084);中央级公益性科研院所基本科研项目(TKS090202)

摘　　要：文章提出了抛石基床块石理想排布状态的二维模型,并通过有限元软件对抛石基床的冲刷问题进行了数值模拟。采用ADINA软件建立二维数值模型,针对船舶尾流的分布特点,计算分析抛石基床在船舶尾流作用下的起动流速,得出抛石基床在尾流作用下的冲刷机理,并拟合得到抛石基床块石的起动流速经验公式。A two-dimensional simplified model under an ideal aligning condition of the rubble bed was presented in this paper,and the scouring problem of rubble bed was numerically simulated by finite element software.According to the distribution characteristics of ship stern flow,a two-dimensional numerical model using ADINA was established to calculate and analyze the incipient velocity of rubble with the effect of the ship stern flow.The scouring mechanism of rubble bed under the influence of the ship stern flow was concluded,and the empirical formula of incipient velocity of the rubble bed was obtained by fitting method.

关 键 词：抛石基床 船舶尾流 起动流速 冲刷机理 

分 类 号：U661.1[交通运输工程—船舶及航道工程] TV223[交通运输工程—船舶与海洋工程]