Method for preventing buckle propagation and inhibiting vortex-induced vibration of benthal pipeline

Abstract

The invention belongs to the technical field of paving benthal pipeline facility and relates to a method for preventing buckle propagation and inhibiting vortex-induced vibration of a benthal pipeline. According to the dimensions of an outside diameter and the wall thickness of the benthal pipeline, the method manufactures a plurality of pairs of variable-section and semicircular shells with the same dimensions and structures; the size of an inside diameter of each shell is equal to that of the outside diameter of the benthal pipeline; the outside diameter is changed along the axial directionand makes transition through a bevel; two ends of each shell are thick; the middle part is thin; the outer surface of the middle part of each shell is fixed with a spiral lateral plate and provided with an extended ocular plate; after one pair of the shells is connected to form a variable-section circular column, the spiral lateral plates in the middle parts of the shells are mutually coincided to form the same spiral structure to form a buckle arrestor; and one buckle arrestor is arranged in the radial direction of the benthal pipeline at intervals of a certain distance in the following method. The method can reduce cost, effectively controls the buckle propagation and vortex-induced vibration of the benthal pipeline and realizes the unification of economy and safety.

Description

A Method for Preventing Buckling Propagation and Suppressing Vortex-Induced Vibration of Submarine Pipeline technical field The invention belongs to the technical field of laying submarine pipeline facilities, and in particular relates to a method capable of preventing buckling propagation of submarine pipelines and suppressing vortex-induced vibration. Background technique During the laying of submarine pipelines at sea, there is usually a rather long span between the pipe-laying ship and the seabed. The length of the span is not only related to the water depth, but also affected by the laying construction load and various complex environments. During the pipeline laying process, some obstacles will cause excessive bending deformation of the pipeline; after the pipeline is laid, local buckling will also occur due to the collision of falling objects such as anchors and other external forces such as the seabed. Once this local buckling occurs, it is easy to spread rapidly a...

AI Technical Summary

Problems solved by technology

At present, there is no device that can prevent buckling propagation and suppress vortex-induced vibration in one

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