| 平台运动下悬垂立管动力响应及疲劳损伤特性试验研究 |
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| 引用本文： | 吴天昊,付世晓,张智奇,何玥.平台运动下悬垂立管动力响应及疲劳损伤特性试验研究[J].海洋工程,2018,36(3):18-25. |
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| 作者姓名： | 吴天昊 付世晓 张智奇 何玥 |
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| 作者单位： | 海洋工程国家重点实验室(上海交通大学);高新船舶与深海开发装备协同创新中心;上海交通大学船舶海洋与建筑工程学院 |
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| 基金项目： | 国家自然科学基金资助项目（51279101；51490674；51490675） |
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| 摘 要： | 悬垂立管因其经济性被广泛应用在深海油气开发中。悬垂立管在顶端平台运动作用下,会不断产生横流向以及顺流向动力响应,循环累积造成疲劳损伤。为了研究悬垂立管在平台运动作用下的疲劳损伤特性,开展了大尺度悬垂立管模型试验。采用小波分析、模态分析、雨流计数法等方法处理分析试验数据。分析平台运动下无内流作用下大尺度悬垂立管动力响应及疲劳损伤特性,发现横流向弯曲应变结果较为复杂,局部呈现行波特性,主导频率具有时变性。相比之下,顺流向弯曲应变结果比较有规律性,整体呈现行波特性,主导频率不具有时变性,并始终保持与顶端平台运动频率相同。平台运动引发的悬垂立管涡激振动疲劳损伤和KC数有关。各点面内疲劳损伤值延管长分布趋势和面内应变RMS延管长分布趋势相似。横流向(CF方向)的疲劳损伤的数量级为顺流向(IL方向)的10-2倍左右。
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| 关 键 词： | 动力响应特性 疲劳损伤 悬垂立管 平台运动 振荡来流 |
Experimental investigation of dynamic response and fatigue damage characteristics of free-hang risers under vessel motion |
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| WU Tianhao,FU Shixiao,ZHANG Zhiqi and HE Yue.Experimental investigation of dynamic response and fatigue damage characteristics of free-hang risers under vessel motion[J].Ocean Engineering,2018,36(3):18-25. |
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| Authors: | WU Tianhao FU Shixiao ZHANG Zhiqi and HE Yue |
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| Institution: | 1. State Key Laboratory of Ocean Engineering, Shanghai Jiao Tong University, Shanghai 200240, China; 2. Collaborative Innovation Center for Advanced Ship and Deep-Sea Exploration, Shanghai Jiao Tong University, Shanghai 200240, China; 3. The School of Naval Architecture, Ocean and Civil Engineering, Shanghai Jiao Tong University, Shanghai 200240, China,1. State Key Laboratory of Ocean Engineering, Shanghai Jiao Tong University, Shanghai 200240, China; 2. Collaborative Innovation Center for Advanced Ship and Deep-Sea Exploration, Shanghai Jiao Tong University, Shanghai 200240, China; 3. The School of Naval Architecture, Ocean and Civil Engineering, Shanghai Jiao Tong University, Shanghai 200240, China,1. State Key Laboratory of Ocean Engineering, Shanghai Jiao Tong University, Shanghai 200240, China; 2. Collaborative Innovation Center for Advanced Ship and Deep-Sea Exploration, Shanghai Jiao Tong University, Shanghai 200240, China; 3. The School of Naval Architecture, Ocean and Civil Engineering, Shanghai Jiao Tong University, Shanghai 200240, China and The School of Naval Architecture, Ocean and Civil Engineering, Shanghai Jiao Tong University, Shanghai 200240, China |
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| Abstract: | |
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| Keywords: | dynamic response characteristics fatigue damage water intake riser vessel motion oscillatory flow |
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