在泥沙石下双线管道的机械性能研究和管道合的研究
Cun-Dong Xu1,2, Wen-Hao Han3, Jin-Xi Xia4
1North China University of Water Resources and Electric Power, Zhengzhou, 450046, Henan Province, China. xcundong@126.com.
Scientific reports
|April 11, 2025
概括
这项关于供水管道的研究发现,增加填充厚度和内部水压会增加管道的位移和压力. 这些发现为设计稳定的供水基础设施提供了关键的见解.
科学领域:
- 土木工程 土木工程是指土木工程.
- 地质技术工程 地质技术工程
- 结构工程 结构工程
背景情况:
- 供水管道是关键基础设施,需要强大的稳定性分析.
- 了解土壤填充和内部水压对管道机械的影响对于防止故障至关重要.
- 现有的研究往往简化了管道系统及其周围环境中的复杂相互作用.
研究的目的:
- 调查填充厚度和内部水压如何影响双线供水管道的稳定性.
- 建立和验证一个数值模型来模拟各种负载条件下的管道行为.
- 为类似的供水项目的设计和安全提供理论基础.
主要方法:
- 开发了一个"双线管道-人工填充基础"系统的三维有限元模型.
- 进行了数值模拟,以分析不同填充厚度和内部水压下的机械性能.
- 用分散变态分解 (DVMD) 来验证有限元模型对测量振动信号的准确性.
主要成果:
- 与DVMD分析相比,有限元模型的相对误差为1.55%,证实了它的有效性.
- 填充厚度增加和土壤填充导致更大的垂直移位 (最大12.24毫米) 和拉伸/压缩应力增加 (最大0.148 MPa/0.568 MPa).
- 内部水压显著影响了应力分布,外部应力低于内部应力.
结论:
- 填充厚度和内部水压都是影响管道稳定性和机械响应的关键因素.
- 该研究提供了关于应力和变形的定量数据,这对于优化管道设计至关重要.
- 经过验证的有限元模型是未来在供水项目中的研究和工程应用的宝贵工具.
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