摘要
海上平台的安全性越来越受到重视,其安全性在一定程度上取决于安全设计标准和规范。目前针对极端海况下新型浮式海上平台生存性试验方法的有关标准较少。参考国际电工委员技术委员会颁布的IEC TS 62600-103中针对波浪能转换装置在极端海况下的生存性试验标准,在其可操作性和环境条件选取等方面做改进,提出针对新型浮式海上平台的生存性试验方法:选取100年一遇的波浪条件作为基准条件,并以基准波浪条件为中心值,分别选取两组波浪朝向不同、谱形不同、能量不同的对照海况条件,最终形成9组独立的环境条件,用于测试平台针对某一确定波浪海况下的最大响应;确定该波浪条件后,选取100年一遇的风、流条件,进行3组补充测试,分别为风、海流与波浪共向;风与波浪共向且与海流不共向;风、海流、波浪均不共向。并以布放于国家海洋综合试验场威海场区的“国海试Ⅰ”海上试验平台为例,采用数值模拟的方法,研究其在极端海况下的生存性。研究过程验证该生存性试验方法的可行性,提出的试验方法也可为将来相关标准的制定提供参考。
The safety of offshore platforms is receiving increasing attention,and their safety relies to a great extent on safety design standards and regulations.Currently,there are limited standards available specifically for survivability testing methods of new types of floating offshore platforms under extreme sea conditions.Referring to the IEC TS 62600-103 issued by the International Electrotechnical Commission(IEC)for survivability testing of wave energy converters under extreme sea conditions,improvements have been made in terms of operability and selection of environmental conditions.A survivability testing method for new types of floating offshore platforms is proposed:selecting the 100-year return wave conditions as the reference condition and determining two sets of contrasting sea conditions with different wave directions,spectra,and energy levels,centered around the reference wave condition.This results in a total of nine independent environmental conditions used to test the platform's maximum response under a specific wave condition.After determining the wave condition,three additional tests are conducted with 100-year return wind and current conditions:wind and waves co-directional but not concurrent with the current;wind and waves co-directional and concurrent with the current;wind,waves,and current all non-co-directional.Taking the"National Sea Trial I"offshore test platform deployed at the Weihai site of the National Marine Comprehensive Test Site as an example,numerical simulation methods are used to study its survivability under extreme sea conditions.The feasibility of the proposed survivability testing method is verified through the research process,and the suggested testing method can serve as a reference for future standard development.
作者
李士花
路宽
王花梅
郑慧源
LI Shihua;LU Kuan;WANG Huamei;ZHENG Huiyuan(National Ocean Technology Center,Tianjin 300112,China;Key Laboratory of Ocean Observation Technology MNR,Tianjin 300112,China)
出处
《中国测试》
CAS
北大核心
2024年第8期51-60,共10页
China Measurement & Test
基金
国家重点研发计划项目(2023YFC3107505)。
关键词
新型浮式平台
极端海况
生存性
试验方法
new types of offshore platforms
extreme sea conditions
survivability
test method
