钢悬链线立管触地区管-土相互作用试验研究

发布时间：2018-04-01 09:21

本文选题：钢悬链线立管　切入点：模型试验　出处：《中国造船》2016年02期

【摘要】：为研究浮体运动、海床刚度对立管顶端张力和触地区动力响应的影响,开发了一套小比尺钢悬链线立管(Steel Catenary Riser,SCR)整体分析试验装置。以实际工作水深为900m的一根SCR为研究对象,模型缩尺为1:435。用异步电机在水平、竖向和转动方向施加位移,幅值为?50mm;模型管材料为硅胶,其顶端自由悬挂在位移施加端,相当于铰接;在触地区选择不同刚度的湿泡沫、干泡沫和玻璃模拟海床。通过试验得到立管触地区的运动响应和顶端张力的时程曲线。与Orcaflex的计算结果进行比较,吻合得较好。结果表明:激励运动的方向对立管触地区的运动幅值和顶张力的影响不大,而运动频率与海床刚度对它们的影响较大。
[Abstract]:In order to study the effect of floating body motion and the influence of seabed stiffness on the top tension of pipe and the dynamic response of contact area, a set of overall analysis and test device for steel Catenary catenary riser with small scale steel catenary is developed. A SCR with actual working depth of 900m is taken as the object of study. The model scale is 1: 435.The displacement of the asynchronous motor is applied in horizontal, vertical and rotational directions, the amplitude of which is? 50mm; the model tube is made of silica gel, the top of which is suspended freely at the displacement application end, which is equivalent to hinged; the wet foam of different stiffness is chosen in the contact area, Dry foam and glass simulated seabed. The time history curves of motion response and top tension of the riser contact area are obtained by experiments. The results are compared with those calculated by Orcaflex. The results show that the direction of excitation has little effect on the amplitude of motion and the top tension in the contact area, but the frequency of motion and the stiffness of seabed have great influence on them.
【作者单位】：浙江海洋大学船舶与海洋工程学院;浙江省近海海洋工程技术重点实验室;
【基金】：浙江省自然科学基金项目(LY15D060005,LZ15E090001,LY15E090007) 浙江省大学生科技创新活动计划(新苗人才计划2015R411019)
【分类号】：P756.2

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