摘要
以南海某导管架平台为原型,采用量纲分析及压弯刚度等效方法建立导管架平台原型与模型之间的相似关系,设计建造导管架有机玻璃模型。使用SACS软件分别对导管架平台原型和模型进行模态分析,通过对比验证发现:前几阶模态频率的最大相对误差为4.3%,说明该模型设计合理,利用该模型进行动力试验可较准确地反映导管架原型的动力特性,为今后损伤识别与安全评价试验研究奠定基础。
The prototype is a jacket platform in the South China Sea,the similar relationship between the prototype and the model of the jacket platform is established by the method of dimensional analysis and equivalent bending stiffness,and the jacket PMMA model is also established.The prototype and the model of the jacket platform are analyzed respectively using the SACS software,and it is found that the maximum relative error rate of the first mode frequency is only 4.3%.The results show that the jacket platform model can reflect the dynamic characteristics of the prototype accurately,and the design of the model is reasonable.It lays a foundation for damage identification test and safety evaluation.
出处
《中国海洋平台》
2017年第6期7-13,共7页
China offshore Platform
基金
中国石油天然气集团公司"十三五"攻关课题(2016A-1007)
关键词
导管架平台
动力相似模型
模态分析
jacket platform
dynamic similarity model
modal analysis
