在不规则的波浪负载下,在海底管道周围的沙海底上对孔隙压力的实验调查
Changjing Fu1,2,3, Jinguo Wang3, Tianlong Zhao1
1National Engineering Research Center for Inland Waterway Regulation, Chongqing Jiaotong University, Chongqing 400074, China.
Sensors (Basel, Switzerland)
|January 26, 2024
概括
浅水波可以导致海底液化,影响管道的稳定性. 这项研究实验性地调查了沙海底不规则波浪造成的多余孔隙压力,揭示了关键影响因素.
科学领域:
- 地质技术工程 地质技术工程
- 沿海工程 沿海工程
- 海洋学 海洋学 海洋学
背景情况:
- 波浪传播可能导致海底液化,损害海底管道的稳定性.
- 了解多余的孔隙压力对于防止管道沉积和变形至关重要.
研究的目的:
- 在不规则波浪下的沙海底实验性地研究多余孔隙压力生成.
- 分析不规则波形特征和管道距离对孔隙压力的影响.
- 将孔隙压力发展模式分类并了解它们的潜在机制.
主要方法:
- 进行了二维波浪流体实验.
- 在各种不规则的波浪条件下测量过多的孔隙压力.
- 信号分析被用来对孔隙压力增长模式进行分类.
主要成果:
- 不规则的波形特征显著影响多余的孔隙压力.
- 管道的近距离会影响孔隙压力的大小和分布.
- 确定了两个明显的孔水压力过度增长的模式.
结论:
- 不规则波浪引起的过度孔隙压力是海底管道稳定性的关键因素.
- 在管道设计中,必须考虑波浪特性和管道的近距离.
- 对孔隙压力机制的进一步研究可以改善海底-管道相互作用模型.
相关概念视频
Fluid Pressure over Flat Plate of Variable Width
1.7K
When a flat plate is submerged in a fluid, the fluid exerts pressure on the plate. This pressure can lead to many different phenomena, including drag and buoyancy. To understand the behavior of the fluid over a flat plate of variable width, it is essential to analyze the distribution of the pressure exerted.
The pressure distribution on the plate can be calculated by determining the force that acts on a differential area strip of the plate. Thus, the magnitude of the force is equal to the...
The pressure distribution on the plate can be calculated by determining the force that acts on a differential area strip of the plate. Thus, the magnitude of the force is equal to the...
1.7K
Fluid Pressure over Flat Plate of Constant Width
2.1K
When a body is submerged in water, it experiences fluid pressure acting normal on its surface and distributed over its area. For better design structures, it is crucial to determine the magnitude and location of the resultant force acting on the surface. In the case of a rectangular plate of constant width submerged in water, the pressure increases with depth, resulting in a linearly varying trapezoidal pressure distribution from the upper to the lower edge of the plate.
The resultant force...
The resultant force...
2.1K
Fluid Pressure over Curved Plate of Constant Width
1.6K
When a curved plate of constant width is submerged in a liquid, the pressure acting normal to the plate varies continuously both in magnitude and direction. Calculating the magnitude and location of the resultant force at a point is often challenging for such cases. One of the methods to determine the resultant force and its location involves separately calculating the horizontal and vertical components of the resultant force. This complex calculation can be simplified by representing the...
1.6K
Typical Model Studies
359
Fluid mechanics model studies often utilize scaled-down systems to predict fluid behavior in full-scale environments, such as river flows, dam spillways, and structures interacting with open surfaces. Maintaining Froude number similarity in river models is crucial, as it replicates surface flow features like wave patterns and velocities.
359


