刘德川,李效民,郭海燕,李福恒

• 1:中国海洋大学工程学院

摘要(Abstract)：

为准确了解张紧器对立管静动力响应的影响以及处理传统分析时立管顶部简化处理的问题，本文充分考虑张紧器的作用，基于向量式有限元(VFIFE)法建立立管动力学模型，研究张紧器对立管静动力响应的影响以及对平台运动传递的规律。研究结果表明：本文建立的立管动力学分析模型能够有效考虑张紧器的影响；海流作用下立管的静力分析中，张紧器能提供更大的顶张力，从而减小立管的横向位移以及最大弯矩；波浪以及平台作用下的动态分析中，张紧器对平台纵荡的传递影响较小，对垂荡的补偿效应明显，补偿后的立管顶端位移远远小于平台运动幅值，并且在张紧器对顶部平台运动的缓冲作用下立管的位移和弯矩受平台运动影响不大。因此在分析中考虑张紧器对平台运动的传递补偿作用能更准确合理地施加顶张力以及平台运动，从而能更加有效的预测立管的响应。

关键词(KeyWords)： 顶张式立管;液压式张紧器;向量式有限元;平台运动;立管响应

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金项目(U2006226,51979257);; 山东省自然科学基金项目(ZR2019MEE032,ZR2020ME261)资助~~

作者(Author): 刘德川,李效民,郭海燕,李福恒

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