EVALUATION OF SAFETY OF FLOATING ARTIFICIAL ISLANDS

人工浮岛的安全评价

• 批准号: 06402055
• 负责人: OHKUSU Makoto
• 金额: $ 11.07万
• 依托单位: KYUSHU UNIVERSITY
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for General Scientific Research (A)
• 财政年份: 1994
• 资助国家: 日本
• 起止时间: 1994 至 1995
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-06402055/
• 关键词: Floating structure; Artificial island; Wave force; Wave observation

Ocean engineers are interested in concept of floating structures as large as several thousand meters long. This type of structures are intended to be used as, for example, floating airports unusual size of them may require new technology especially for accurate evaluation of their safety for very long period, say 100 years. Prediction of their safety must be extremely reliable with this type of structures. Objective of this project is to establish a new methodology for evaluating the safety of large floating structures of unusually large size and unusually large age expected. For this we have studied. (1) Response of floating structures, whose scale is comparable to the topographical scale, to stormy waves and its rational predicition method. (2) Improvement of reliability of wave forecast for very long period (100years) at the sites in particular, close to shore where the floating islands are expected to be deployed. Our results are as follows. (a) Analytical method to predict wave forces on a floating platform supported by numerous floats of vertical and truncated circular cylinder was developed and numerically implemented. In this method the topographical effect at shore region is accounted for mathematically correct way. (b) Hydroelastic behavior of large floating structure interacting sea was studied and its correct prediction method was proposed. (c) We proposed a new methodology of wave forecast at shore region and for very long years based on the wave observation data by the ocean tower of Research Institute of Applied Mechanics, Kyushu University and a new mathematical wave forecast model.

海洋工程师对长达几千米长的浮动结构的概念感兴趣。这种类型的结构旨在将其用作例如浮动机场的异常尺寸可能需要新技术，尤其是为了准确评估其安全性很长一段时间，例如100年。对其安全性的预测必须非常可靠。该项目的目的是建立一种新方法，以评估大小异常大且预期异常大的浮动结构的安全性。为此，我们研究了。 （1）浮动结构的响应，其比例与地形尺度相当，与暴风雨波及其理性谓语方法相媲美。 （2）尤其是在近距离的岸上，预计将部署浮动岛的岸边，尤其是在岸边提高波浪预测的可靠性。我们的结果如下。 （A）开发并通过数值实现了垂直和截断圆柱体的许多浮子支撑的浮动平台上的波力的分析方法。在这种方法中，岸边区域的地形效应在数学上是正确的。 （b）研究了大型浮动结构相互作用的海洋弹性行为，并提出了其正确的预测方法。 （c）我们提出了一种新的在岸边区域的波浪预测方法，并根据海洋塔研究所应用力学研究所，九州大学和新的数学波浪预测模型的波浪观察数据。

项目成果

大楠丹: "超大型浮体式海洋構造物に作用する波力に関する研究" 日本造船学会論文集第175号. 131-138 (1994)

Tan Ohkusu：“作用于超大型浮动海上结构的波浪力的研究”日本造船学会会刊，第 175. 131-138 号（1994 年）

大楠 丹: "Effect of sloping sea bottom on wave forces acting on a large floating platform" Proc. 7th International Conference on the Behaviour of Offshore Structures. 2. 877-888 (1994)

Tan Ohkusu：“倾斜海底对作用于大型浮动平台的波浪力的影响”，第七届国际海上结构行为会议。 2. 877-888 (1994)

M.OHKUSU: "Effect of Sloping Sea Bottom on Wave Forces Acting on a Large Floating Platform" Proc.7th International Conference on the Behavior of Offshore Structures. vol.2. 877-888 (1994)

M.OHKUSU：“倾斜海底对作用于大型浮动平台的波浪力的影响”Proc.7th 国际海上结构行为会议。

M.OHKUSU: "Hydrodynamic Behavior of a Very Large Floating Platform in Waves" Proc.10th International Workshop on Water Waves and Floating Bodies. (1996)

M.OHKUSU：“波浪中超大型浮动平台的流体动力学行为”Proc.10th 国际水波和浮动体研讨会。

M.OHKUSU: "Wave Forces on Floating Platform on the Water of Varying Depth" Proc.10th International Workshoop on Water Waves and Floating Bodies. vol.1. 153-156 (1995)

M.OHKUSU：“不同深度水面上浮动平台上的波浪力”Proc.10th 国际水波和浮体研讨会。