Truss Spar平台垂荡响应频域分析  

Heave response analysis of Truss Spar in frequency domain

作　　者：李彬彬[1] 欧进萍[1,2] 

机构地区：[1]哈尔滨工业大学土木工程学院,黑龙江哈尔滨150090 [2]大连理工大学土木水利学院,辽宁大连116024

出　　处：《海洋工程》2009年第1期8-16,共9页The Ocean Engineering

基　　金：国家863计划资助项目(2006AA09A1032006AA09A104)

摘　　要：利用已有水动力试验和数值模拟结果及Morison方程,简化估计了Truss Spar平台垂荡方向水动力贡献,快速有效地预报了平台极端海况下的垂荡响应。在频域内分别采用数值迭代计算和粘滞阻尼线性化方法得到了平台在不同数量垂荡板配置下的垂荡响应幅值算子。在墨西哥湾、西非和中国南海等3种不同地区极端海况以及墨西哥湾工作状态海况下计算了平台的响应极值,分析发现平台波频垂荡响应对入射波浪周期非常敏感。采用JONSWAP波能谱得到了Truss Spar平台垂荡响应谱。通过比较和参数分析,验证了平台在设计上的合理性与实际海况下良好的垂荡运动性能。Using the results of hydrodynamic experiments and numerical simulation from former investigations, the contribution of heave hydro-dynamic force of Truss Spar is estimated simply. The heave response in extreme ocean conditions is predicted fleetly and effectively. The heave response amplitude operators for different heave plates are obtained through numerical iteration and viscous damping linearization methods respectively. The Heave response extremums were calculated under 3 different extreme ocean conditions in Mexico Gulf, West Africa, and South China sea. The results indicate that the wave frequency exciting heave response is dominated by the incident wave period. Using the JONSWAP wave spectrum, the heave response spectrums are obtained and the rationality and favourable motion behavior of Truss Spar in random ocean conditions are validated.

关 键 词：TRUSS Spar 垂荡 响应 频域 

分 类 号：P751[交通运输工程—港口、海岸及近海工程]