基于EWT和CWT的堤穿越管道的振动特征研究
Jinlin Huang1,2, Ziyu Li2, Jianwei Zhang2
1Guangdong Research Institute of Water Resources and Hydropower, Guangzhou, 510635, China.
Heliyon
|September 23, 2024
概括
本研究使用实证波波变换 (EWT) 和交叉波波变换 (CWT) 识别了堤过渡管道中的关键振动频率. 研究结果确定旋转和叶子频率是主要的振动源,有助于管道维护.
科学领域:
- 土木工程 土木工程是指土木工程.
- 机械工程 机械工程
- 信号处理 信号处理
背景情况:
- 堤过渡管道对于城市水利基础设施至关重要.
- 有效的振动分析对于管道完整性和维护至关重要.
- 了解振动源和合特性可以为目标强化提供信息.
研究的目的:
- 提出一种新的方法来分析堤穿越管道的合振动特征.
- 在特定的管道中识别主振动源及其频率.
- 在类似的基础设施项目中,为减少振动提供技术支持.
主要方法:
- 利用原型观测数据和相互关联功率光谱分析来识别振动源.
- 使用经验波纹变换器 (EWT) 来从振动信号中提取特征频率.
- 应用交叉波形转换 (CWT) 来分析合振动特性和能量分布.
主要成果:
- 确定了多个旋转频率 (29.5 Hz, 36.5 Hz) 和叶子频率 (59.0 Hz) 作为主要的振动源.
- 经验波形变换 (EWT) 有效地隔离了这些特征频率,消除了干扰.
- 交叉波形转换 (CWT) 揭示了峰值合振动能量集中在29.5 Hz,源自旋转频率.
结论:
- 拟议的EWT和CWT方法准确地识别了堤穿越管道中的振动源和合特征.
- 旋转频率被证实是研究管道中合振动的主要驱动因素.
- 这项研究提供了有价值的见解和技术支持,用于评估和减轻城市输水系统中的振动问题.
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