Long-term field measurement of a Very Large Floating Structure and development of a rational design method

超大型漂浮结构的长期现场测量和合理设计方法的发展

• 批准号: 17360212
• 负责人: UTSUNOMIYA Tomoaki
• 金额: $ 10.18万
• 依托单位: KYOTO UNIVERSITY
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 2005
• 资助国家: 日本
• 起止时间: 2005 至 2006
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-17360212/
• 关键词: Very Large Floating Structure; Field measurement; Drift force; Hydroelastic response; Wave response; Multi-directional random wave

In this research, the long-term field measurement of wave response of a large floating structure located at Awaji-island was made. The vertical elastic response and the horizontal motion as a moored vessel have been measured, and compared with the simulated values. The vertical hydroelastic responses have been compared in the frequency domain, and a good agreement has been obtained. The horizontal motion has been simulated in the time-domain where the nonlinear mooring restoring force characteristics and the memory effect are considered, and also a good agreement has been obtained, if the clearances at the fenders are adjusted. Basically, the simulation presented in this paper can represent the measured values; however, further improvement to consider the multi-directional irregular sea-state may be necessary.Then, in FY 2006, the multi-directional irregular waves have been reproduced from the measurement values of current speed and water pressure obtained from the field-measurement. The horizontal motions as a moored vessel have been measured and compared with the simulated values in frequency domain. The results have shown that the significant values for the horizontal motions by the simulation agree well with the measured values, when the multi-directional irregular waves are considered.

本研究以淡路岛大型浮式结构物为研究对象，进行了波浪响应的长期实测。测量了系泊船舶的垂向弹性响应和水平运动，并与模拟值进行了比较。在频域中比较了垂向水弹性响应，得到了很好的一致性。在时域内对水平运动进行了数值模拟，考虑了系泊恢复力的非线性特性和记忆效应，通过调整护舷间隙，得到了较好的一致性。本文的模拟基本上可以代表实测值，但还需要进一步改进，以考虑多向不规则海况。2006年，根据现场实测的流速和水压测量值再现了多向不规则波。测量了系泊船舶的水平运动，并与频域模拟值进行了比较。结果表明，当考虑多向不规则波时，模拟得到的水平运动显着值与实测值吻合较好。

项目成果

大型浮体の波浪中動揺の実海域計測とそのシミユレーション

实际海域测量及大型浮体波浪运动模拟

• 发表时间: 2006
• 期刊: 応用力学論文集,土木学会 9
• 作者: 小崎洋平;宇都宮智昭;加藤俊司;難波康広;佐藤宏;湯川和浩
• 通讯作者: 湯川和浩

Effect of multi-directionality in waves for simulation of wave-induced motion of a large floating structure

波浪多向性效应对大型漂浮结构波浪诱发运动的模拟

• 发表时间: 2007
• 期刊: JSCE annual meeting at Kansai Branch I-27
• 作者: Hayakawa T;Utsunomiya T;Sato H;Yukawa K;Maeda;K;Kato S
• 通讯作者: Kato S

Analysis of Wave Response of a Large Floating Structure in Multi-Directional Waves and Verification by Field Measurement

大型漂浮结构在多向波中的波浪响应分析及现场测量验证

• 发表时间: 2007
• 期刊: Annual Journal of Civil Engineering in the Ocean, JSCE Vol.22(in print)
• 作者: Hayakawa T;Utsunomiya T;Sato H;Yukawa K;Maeda;K;Kato S
• 通讯作者: Kato S

超大型浮体式構造物多点係留システムの定量的リスク解析

超大型浮体结构多点系泊系统定量风险分析

• 发表时间: 2007
• 期刊: 第6回構造の安全性・信頼性に関する国内シンポジウム(JCOSSAR 2007)B論文 (印刷中)
• 作者: 斉藤昌勝;正信聡太郎;加藤俊司
• 通讯作者: 加藤俊司

Quantitative Risk Analysis of VLFS Multiple Mooring System

VLFS多重系泊系统的定量风险分析

• 发表时间: 2007
• 期刊: Proceedings of JCOSSAR 2007 Paper B(in print)
• 作者: Saito M;Masanobu S;Kato S
• 通讯作者: Kato S