流体动力干扰对单排圆柱桩列波浪力的影响

多物体之间的流体动力干扰特性对超大型海洋结构物的设计和研究十分重要用波动源在截面周线上分布的方法，就垂直桩柱间三维流体动力干扰对波浪力的影响进行了系统的研究，桩柱的数目可达１００余根得到了柱间流体动力干扰力学机理的若干新的特性尤应指出的是，当桩柱根数超过某一数量后，桩柱上的受力表现出有规律的连续依赖性当柱数很大时，无论柱数是奇数还是偶数，中间大部分的桩柱都将表现出均匀的受力特征这些特性的发现对其他形式多体结构物流体动力干扰的研究也有重要的借鉴和指导意义

ON THE EFFECTS OF HYDRODYNAMIC INTERACTION UPON THE WAVE FORCE ON VERTICAL PILE ARRAY OF SINGLE ROW 1)

A systematic study has been carried out on the effects of three-dimensional wave forces of vertical pile array, applying method of wave source distribution on arbitrary sectional contour of the piles The piles involved in computation reach up to 100 Some new properties of hydrodynamic interaction among piles are obtained It should be emphasized that the forces on piles shows continuous dependence when the piles number increases over a certain number When the number is very large, forces on the middle piles are almost uniform whether the number is odd or even For the cases involved in the present paper, we may draw the following conclusions among others, i e 1 In head sea condition, the shielding of the front piles are dominant in relatively shorter waves 2 With the increase of the wave length, the interference effects among piles will gradually become stronger and finally be dominant in the long wave range while the shielding effects are getting weaker 3 There exists a quite narrow wave length range in which the distribution of the wave force amplitudes along a pile array will vary quite sensitive to small changes in wave length both in its configuration and magnitude due to the compatibility between the shielding and interference effects among piles Those new findings, although drawn from arrays of vertical cylinderical piles, would give insight into the hydrodynamic interaction phenomena for multiple objects of general shape in waves These discoveries are significant guidance of the study of hydrodynamic interaction upon other forms of offshore structures