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通过对H轮冰区航行被冰围困导致车叶受损案例分析,旨在提高驾驶人员冰区航行安全意识、风险辨识能力和风险防范及控制能力,为保证船舶冰区安全航行提供参考。 相似文献
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世界部分区域和港口的冰冻现象给船舶进出和作业造成严重影响,船舶冰区航行作业将面临船员自身安全、压载水排放、螺旋桨保护、船体受损、设备受高寒无法运转、货物装卸无法按计划进行等多方面考验,需要航海人员严格遵守冰区航行的相关规定,充分吸取前人的经验教训并不断积累。以J轮冰区航行作业实践为例,对船舶在冰区航行的准备工作及注意事项加以总结,以期对冬季船舶防冰、抗冰工作提供帮助和参考。 相似文献
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极地船舶需求增长空间广阔,全球航运市场对于冰区航线的兴趣持续增长。对在冰区航行船舶的船壳水下部分的涂层也有了更高的要求。文章介绍了新型冰区船舶涂料的技术研究方向,为冰区航行船舶船壳水下部分提供坚强的保护,同时还可以帮助冰区船舶更好地提高能效,减少CO2排放。 相似文献
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船舶在冰区航行时的冰阻力性能一直是国内外关注和研究的重点。冰阻力的研究主要集中在经验方法、数值模拟和实验研究三个方面。同时,由于冰区船舶在航行过程中频繁地与冰层或浮冰产生碰撞,海冰的材料结构和力学性质对冰阻力的研究有重要影响。文章从冰的物理力学特性出发,简要回顾几种重要的冰本构关系模型及其适用性;并从经验方法及试验与数值模拟相结合两个角度,回顾和讨论浮冰区和平整冰区中船舶的冰阻力性能研究进展;最后,基于研究现状提出尚需进一步解决的问题。文章旨在介绍冰区船舶冰阻力性能的研究进展,望能为后续冰阻力研究提供参考。 相似文献
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《船舶与海洋工程学报》2016,(3)
In this study, we carried out model tests to investigate the ice failure process and the resistance experienced by a transport vessel navigating in the Arctic region in pack ice conditions. We tested different navigation velocities, ice plate sizes, and ice concentrations. During the tests, we closely observed several phenomena, including the modes of interaction of the ice ship and the moving and failure modes of ice. We also measured the vessel resistances under different conditions. The test results indicate that the navigation velocity is a significant determinant of the moving and failure modes of ice. Moreover, vessel resistance is remarkably dependent on the ice concentration and navigation velocity. The variances of the mean and maximum resistance are also compared and discussed in detail. 相似文献
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In this study, we carried out model tests to investigate the ice failure process and the resistance experienced by a transport vessel navigating in the Arctic region in pack ice conditions. We tested different navigation velocities, ice plate sizes, and ice concentrations. During the tests, we closely observed several phenomena, including the modes of interaction of the ice ship and the moving and failure modes of ice. We also measured the vessel resistances under different conditions. The test results indicate that the navigation velocity is a significant determinant of the moving and failure modes of ice. Moreover, vessel resistance is remarkably dependent on the ice concentration and navigation velocity. The variances of the mean and maximum resistance are also compared and discussed in detail. 相似文献
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本文针对中国新型极地考察船所受冰载荷进行了研究,其中包含了平整冰阻力和浮冰碰撞力.对于船舶设计者和建造者来说,船舶冰载荷的预估非常重要.本文采用经验公式方法计算了该船在平整冰中航行的冰阻力,并且与模型试验结果进行了对比.结果显示,计算和试验结果中的冰阻力都随船舶航行速度的增大而增大,经验公式方法可以预测出合理的平整冰阻力.通过计算得到了该船的性能曲线,即该船在不同厚度平整冰中航行所能达到的速度.此外,本文还考虑了该船与圆形浮冰之间的三维斜向碰撞问题,采用解析方法评估了浮冰对船舶的撞击力,研究了撞击位置、法向框架角度以及浮冰尺寸对碰撞力的影响.基于计算结果,本文就冰载荷的预测进行了讨论并提出了一些建议. 相似文献
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51800DWT冰区加强型化学品/成品油轮是广船国际自行开发设计的、具有世界先进水平的北极冰区航线成品油/化学品船。该船可满足全球造船业所公认的高等级规范“瑞典-芬兰冰级1Asuper”。本文结合冰区加强结构设计介绍该船的船体结构设计特点。 相似文献
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Numerical study of ice-induced loads on ship hulls 总被引:1,自引:0,他引:1
A numerical model is introduced in this paper to investigate both global and local ice loads on ship hulls. This model is partly based on empirical data, by which the observed phenomena of continuous icebreaking can be well reproduced. In the simulation of a full-scale icebreaking trial, the interdependence between the ice load and the ship’s motion is considered, and the three degree-of-freedom rigid body equations of surge, sway and yaw are solved by numerical integration. The variations in the level ice thickness and in the strength properties of ice can also be taken into account. The simulated ice loads on ship hulls are discussed through two case studies, in which the ship’s performance, the statistics of ice-induced frame loads, and the spatial distribution of ice loads around the hull are analyzed and compared with field measurements. As far as we know the present paper is the first to integrate all the features above. It is hoped that further studies on this numerical model can supplement the field and laboratory measurements in establishing a design basis for the ice-going ships especially for ships navigating in the first-year ice. 相似文献
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辽东湾北部浅水区海冰对航行的影响及对策 总被引:1,自引:0,他引:1
辽东湾北部浅水区有许多石油开发区块,由于水浅有冰等因素,使在现有的破冰船和冰区航行技术条件下的航行十分困难。分沿岸冻结区、滩涂堆积区和流冰区等不同区带讨论辽东湾北部海冰存在特征以及海冰对航行的影响,并根据海冰存在特点和海域工程的具体特性提出相应的对策。 相似文献
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该文详细介绍了船舶在破冰船引领下进入圣彼得斯堡港途中的船舶操纵。各船之间的必要联系、冰层中锚泊等各种特殊情况及航行经验,以供广大海员参考。 相似文献