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海底悬空管道振动测试及分析
Vibration testing and analysis of submarine suspended pipelines
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- DOI:
- 10.3969/j.issn.1001-2206.2025.S.020
- 作者:
- 于俊峰, 孔庆昊
YU Junfeng, KONG Qinghao
- 作者单位:
- 1. 中国石化胜利油田分公司海洋采油厂, 山东东营 257237;2. 中国石化胜利油田分公司, 山东东营 257000
1. Offshore Oil Production Plant, Sinopec Shengli Oilfield Branch, Dongying 257237, China;2. Sinopec Shengli Oilfield Branch, Dongying 257000, China
- 关键词:
- 悬空管道; 振动测试; 经验模态分解; 动态响应
suspended pipeline;vibration testing;empirical mode decomposition;dynamic response
- 摘要:
受工程水文条件与海床环境影响，海底管道常出现悬空现象。悬空管道在外部环境条件作用下易产生振动，甚至引发疲劳断裂。针对这一问题，以某平台在役悬空管道为研究对象，开展了较大波浪工况下的管道振动测试，通过捕捉最大有效波高3 m的波浪过程中管道的动态响应数据，结合经验模态分解方法对管道振动数据进行分析。研究结果表明：管道水平与垂直方向振动相位同步，水平方向最大幅值达32 mm，呈周期性；波高与振动响应存在显著的相关性；振动周期受潮汐流方向影响，浪流同向时振动强度大，反向时振动强度衰减；悬空管道振动存在0.40 Hz和0.74 Hz两个卓越频率，且与管道自振等结构特性相关。
Affected by engineering hydrological conditions and seabed environments, the suspension of submarine pipelines often occurs. Suspended pipelines are prone to vibration under external environmental conditions, which may even lead to fatigue fracture. To address this issue, this study took an in-service suspended pipeline of a certain platform as the research object and conducted pipeline vibration tests under large wave conditions. By capturing the dynamic response data of the pipeline during wind and wave processes with a maximum wave height of 3 m, the pipeline vibration data were analyzed by the empirical mode decomposition (EMD) method. The research results show that the horizontal and vertical vibrations of the pipeline are phase-synchronized, with the maximum horizontal amplitude reaching 32 mm, showing periodicity; there is a significant correlation between wave height and vibration response; the vibration period is affected by the direction of tidal current—vibration intensity is higher when waves and currents are in the same direction, and it attenuates when they are in opposite directions; the suspended pipeline vibration has two dominant frequencies of 0.40 and 0.74 Hz, which are related to structural characteristics such as the natural vibration of the pipeline.