Pre-tension seabed vacuum pipeline structure and stretching method thereof

Abstract

The invention discloses a pre-tension seabed vacuum pipeline structure and a stretching method thereof. The rigidity of a seabed vacuum pipeline can be improved, drooping of the middle of a suspended span pipeline is minimized, and driving stability and safety are guaranteed. The structure comprises the seabed vacuum pipeline and a plurality of abutments; the seabed vacuum pipeline is fixedly supported on the tops of the abutments; the abutments have elastic strength; the seabed vacuum pipeline comprises a plurality of vacuum pipeline sections which are sequentially arranged; the vacuum pipeline sections have tensile strength; flanges are arranged at the opposite ends of every two adjacent vacuum pipeline sections; gaps are formed between the flanges of every two adjacent vacuum pipeline sections at intervals; and the flanges of every two adjacent vacuum pipeline sections are connected through a tensioning mechanism. The stretching method comprises the steps that the plurality of vacuum pipeline sections are locally grouped and then stretched through a sequencing stretching method, each vacuum pipeline section is stretched step by step through a step-by-step stretching method, and the gaps between the flanges of every two adjacent vacuum pipeline sections are stretched and closed step by step.

Description

technical field [0001] The invention belongs to the technical field of submarine vacuum pipeline transportation and ocean engineering, and in particular relates to a pretensioned submarine vacuum pipeline structure and a stretching method thereof. Background technique [0002] Due to the constraints of air resistance, aerodynamic noise, and aerodynamic vibration, it is difficult for high-speed railways and maglev trains to further increase their speed. In addition to being affected by air resistance, aircraft and automobiles have high energy consumption and large carbon emissions, which will limit their future development. Vacuum tube high-speed maglev transportation overcomes the above shortcomings, can achieve ultra-high speed, and has low energy consumption and small environmental impact. It is expected to create a new situation in human transportation. [0003] Vacuum pipeline transportation is composed of pipelines, vehicles, power supply, communication, drive and cont...

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Problems solved by technology

[0013] On the other hand, the span between the piers and abutments of the submarine vacuum pipeline is relatively large, and there will be flexion and sag in the middle of the suspended pipeline. When the vacuum pipeline vehicle passes, the sag will increase, which will affect the stability and safety of driving.

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