摘要
分析了桩柱破波力的构成特性,认为破碎波与桩柱作用过程中在不完全绕流区将出现由于附连质量迅速变化引起的冲击力和柱前后波面高度差引起的附加压差力;影响破碎波对直立圆柱作用力的因素应该包括确定破波特性的水底坡度i、入射深水波陡H_0/L_0及代表圆柱对破波作用影响的相对柱径D/H_0。通过从i=1/100到1/15五种底坡上桩柱破波力的系统试验,探索了桩柱破波力的作用特性,归纳了计算桩柱破波力的经验公式。
Analysis of breaking waves forces on vertical circular cylinder showed that the forces: resulting from the breaking wave passing through a cylinder are composed of an impact force caused by the rapid variation of momentum with the change of virtual mass of cylinder and an additional pressure force due to the difference of water levels between the lee and stoss sides of the cylinder and that the factors determining breaking wave forces on vertical cylinder should be the steepness (H0/L0) of the deep water wave, the bottom slope (i), and the relative-cylinder diameter (D/H0). The first two determine the characteristics of the breaking wave while the third represents the effect of the cylinder itself on the breaking wave forces. The analysis and experiments with 5 bottom slopes from i =1/100 to 1/15 yielded an empirical formula for the forces.
出处
《海洋与湖沼》
CAS
CSCD
北大核心
1992年第6期635-641,共7页
Oceanologia Et Limnologia Sinica
基金
国家自然科学基金资助 918700303号
关键词
海洋
波浪
破碎波
圆栏作用力
Breaking Wave, Shallow I eaking wave, Wave forces on a circular cylinder.
