船舶运动对管线受力特性的影响

Analysis of Forces on Pipelines in a Moving Ship

针对深海采矿船矿物水力输送时管线在船舶运动作用下的受力问题,建立了管线和管内流体的耦合模型。综合考虑船舶运动及管内部流体耦合作用的影响,分析了不同工况下管线的变形、应力及支座反力。计算结果表明:受船舶运动的影响,在某些工况下管内流体载荷对管线的作用力有一定程度的加强。在管线设计时需重点考虑惯性力和重力叠加的工况。这项研究可为船舶上管线、支座、接头、法兰等的设计提供参考。

For a mining ship with hydraulic mineral transportation from deep-sea,a coupling model of pipeline mounted in the ship and internal flowing fluid is established in this paper.A calculation method of pipeline's response to the loads of ship motions and mineral slurry flow is put forward,and the deformation,stress and support reaction under various working conditions are analyzed.Calculation results show that the fluid load in the pipe has a certain influence on the force exerted on the pipeline.Superposition effect of the inertia force and the gravity should be specially considered in design of the pipeline.The results can provide references for the design of pipelines,supports,joints,flanges,etc,in the ship.