Experimental device for simulating interaction between submarine suspended pipeline and shoulder-spanning soil body

Abstract

The invention discloses an experimental device for simulating interaction between a submarine suspended pipeline and a shoulder-spanning soil body. The experimental device comprises a main soil box, an experimental pipeline, a shoulder-spanning soil body supporting block and a driving device; a displacement sensor is arranged on the box, the shoulder-spanning soil body supporting block is locatedat the bottom of the main soil box, the experimental pipeline is located over the shoulder-crossing soil body supporting block, one end of the experimental pipeline is connected with the driving device, and the other end of the experimental pipeline is fixed to the main soil box; and a graduated scale is arranged in the inner side of the main soil box along the experimental pipeline direction. Thedevice has the advantages that the lateral reciprocating motion process of the experimental suspended pipeline on the shoulder-spanning soil body is simulated, the experimental soil body is preventedfrom sliding down through the shoulder-spanning soil body supporting block, suspension is guaranteed, one end of an experimental pipeline model is fixed, the other end of the experimental pipeline model is connected with a transmission connecting rod, and the motion state of a real seabed suspended pipeline on the shoulder-spanning soil body is simulated.

Description

technical field [0001] The invention relates to a test device in the technical field of ocean engineering, in particular to an test device for simulating the interaction between a submarine suspended pipeline and a shoulder-span soil. Background technique [0002] Submarine pipelines play an important role in offshore oil and gas transportation. Pipelines are generally laid in three ways: buried, semi-buried and straight-laid. In shallow seas, in order to prevent accidents such as falling objects and hooks, buried methods are generally used. When the seabed is scoured and eroded by the ocean current, the pipeline is easy to form a suspended section, so that the pipeline is subjected to dynamic impacts such as ocean currents and waves to form a dynamic response, which will have an adverse effect on the pipeline, and the vibration of the pipeline will also promote the cross shoulder soil to a certain extent. The loss of body will intensify the formation of the suspended sectio...

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Problems solved by technology

When the seabed is scoured and eroded by the ocean current, the pipeline is easy to form a suspended section, so that the pipeline is subjected to dynamic impacts such as ocean currents and waves to form a dynamic response, which will have an adverse effect on the pipeline, and the vibration of the pipeline will also promote the cross shoulder soil to a certain extent. The loss of body will intensify the formation of the suspended section, and the dynamic response of the span-shouldered soil to the suspended pipeline cannot be ignored. At present, there is a lack of relevant simulation equipment to test the interaction force between the submarine suspended pipeline and the span-shouldered soil.

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