基于多项式逼近的管道悬跨响应谱研究  

Polynomial-approximation-based study on response spectrum for a pipeline span

作　　者：余建星[1] 杨怿[1] 傅明炀[1] 杜尊峰[1] 许华力[1] 

机构地区：[1]天津大学港口与海岸工程实验室,天津300072

出　　处：《船舶力学》2009年第4期579-586,共8页Journal of Ship Mechanics

摘　　要：该文详细介绍了采用线性化法和多项式逼近法求解非线性波浪力谱密度的过程。在此基础上推导出波流联合作用和忽略海流影响作用这两种条件下,管道悬跨结构的流向及垂向响应谱密度。最后,文中以某一海底管线为例,对比采用这两种方法得到的结果。The calculation of the spectral density of non-linear wave forces is presented in detail, based on linearized approach and polynomial-approximated approach, respectively. On this basis, the spectral density of response for a pipeline span is derived in the in-line and cross-flow directions,under two conditions,i.e.,the combined wave-current effects and current effects being neglected.Finally,a practical pipeline is employed as a case to compare the results calculated with the two approaches.

关 键 词：线性化法 多项式逼近法 管道悬跨响应谱密度 非线性波浪力 

分 类 号：TE54[石油与天然气工程—油气田开发工程]