【摘要】 本文中的近海塔式结构是部分潜入海中的理想均质细长圆柱筒,上端支撑着刚性质量块,下端连接在刚性圆盘上,圆盘又附着于弹性半空间上。水被视作无旋、无粘性理想流体。本文提出一种计算部分潜入无限水域中圆柱体振动特性的解析方法,得出了水-土壤-圆柱耦联振动的固有频率、柱体振型、动水压力的解析表达式,并重点讨论了土壤变形、液面晃动、液体压缩性的影响。更多还原

【Abstract】 In this paper an offshore tower structure partially submerged in the wateris idealized as a uniform slender cylinder which supports a rigid tip mass andis connected to a rigid base mass resting on the surface of an elastic halfspace. The water is idealized and assumed to be irrotational and non-viscous.An analytical approach which may be used to compute the vibration property of acylinder submerged in an infinite water region is presented. The analyticexpressions for natural frequency of water- soil-cylinder coupled vibration,the mode of vibration of the cylinder, and the hydrodynamic pressure havebeen obtained. The effects of soil deformation, fluid surface sloshing, andthe fluid compressibility are stressed upon and discussed in detail.更多还原