堆
光谱密度
光谱法
光谱分析
功能(生物学)
海床
波长
概率密度函数
点(几何)
几何学
物理
机械
经典力学
数学分析
数学
地质学
光学
岩土工程
量子力学
海洋学
光谱学
统计
进化生物学
生物
出处
期刊:Journal of the Waterways and Harbors Division
[American Society of Civil Engineers]
日期:1967-05-01
卷期号:93 (2): 129-156
被引量:115
标识
DOI:10.1061/jwheau.0000487
摘要
A computational formula is developed for determining, from the sea-surface spectral density, the spectral density function of the force per unit length at a point on a vertical pile. An accurate and simple approximation for the formula is presented and used to explain the near proportionality between the spectral densities of force and sea surface measured in the ocean near Davenport, Calif. The computational formula and its approximation are extended to provide procedures for the determination of the spectral density of either total force or total overturning movement on a structure consisting of an array of vertical cylinders. The approximation leads to a particularly simple relationship in which the spectral density for the total structure is the spectral density for a single pile times a function which characterizes the geometry of the array. To illustrate the procedure, the total force spectral density is computed for a four-pile instrument platform in 49 ft of water.
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