摘要：【中文】本发明公开了一种变间距海洋立管抑振装置布置方法，包括步骤：第一步，根据实际海况、立管固有特性，对立管进行涡激振动疲劳分析，根据分析结果，确定是否需要安装涡激振动的抑制装置；第二步，根据立管的涡激振动疲劳破坏风险水平、振动幅度和拖曳力载荷，将立管划分为疲劳破坏高风险段、低风险段、无风险段和过渡段，然后分别采取不同的预设安装方式来布置抑振装置，最终完成抑振装置的布置工作。本发明通过将立管轴向区域分为疲劳破坏高风险段、低风险段、无风险段和过渡段，在不同疲劳破坏区域采用不同间距来布置抑振装置。该布置方法能够保证抑振装置对涡激振动的抑制效果，大幅度降低立管所受到的拖曳力载荷。 【EN】The invention discloses a method for arranging a vibration suppression device of a variable-spacing marine riser, which comprises the following steps of: firstly, performing vortex-induced vibration fatigue analysis on a riser according to actual sea conditions and inherent characteristics of the riser, and determining whether a vortex-induced vibration suppression device needs to be installed or not according to an analysis result; and secondly, dividing the vertical pipe into a fatigue failure high-risk section, a fatigue failure low-risk section, a fatigue failure non-risk section and a transition section according to the vortex-induced vibration fatigue failure risk level, the vibration amplitude and the drag load of the vertical pipe, and then respectively arranging vibration suppression devices in different preset installation modes to finally finish the arrangement work of the vibration suppression devices. The invention divides the axial area of the vertical pipe into a fatigue failure high-risk section, a low-risk section, a no-risk section and a transition section, and arranges the vibration suppression devices in different fatigue failure areas by adopting different intervals. The arrangement method can ensure the inhibition effect of the vibration inhibition device on vortex-induced vibration, and greatly reduce the drag load borne by the stand pipe.

摘要：【中文】本发明公开了一种海洋立管螺旋型扰流抑振装置，包括立管(12)；立管(12)的外表面，嵌套有依次连接的多段立管套筒(14)；每段立管套筒(14)具有三个等间距焊接的扰流片组(6)；每个扰流片组(6)包括呈螺旋线型分布的多个扰流片(5)；每个扰流片组(6)中的任意相邻的两个扰流片(5)的间隔距离相等。本发明公开的一种海洋立管螺旋型扰流抑振装置，其能够有效抑制海洋立管发生涡激振动，具有全向性抑振效率良好，同时阻力性能良好的特点，具有重大的实践意义。 【EN】The invention discloses a spiral disturbed flow vibration suppression device for an ocean riser, which comprises a riser (12); the outer surface of the stand pipe (12) is nested with a plurality of sections of stand pipe sleeves (14) which are connected in sequence; each section of vertical pipe sleeve (14) is provided with three spoiler groups (6) welded at equal intervals; each spoiler group (6) comprises a plurality of spoilers (5) distributed in a spiral line shape; the interval distance between any two adjacent spoilers (5) in each spoiler group (6) is equal. The spiral disturbed flow vibration suppression device for the marine riser, disclosed by the invention, can effectively suppress vortex-induced vibration of the marine riser, has the characteristics of good omnidirectional vibration suppression efficiency and good resistance performance, and has great practical significance.