Simulation device of riser motion response based on combination of wave frequency and slow drift of floating structure

Abstract

The invention discloses a riser motion response simulation device based on the combination of floating structure wave frequency and slow drift, comprising a movable water tank, a top vibration excitation loading device, a test sample tube and a data acquisition system; plate, tempered glass plate, etc.; the top vibration excitation loading device is composed of H-shaped steel column, T-shaped side plate and hydraulic servo dual-frequency vibration excitation loading device, which is set on the right side of the movable water tank; the test sample tube includes silicone tube and Cylindrical syntactic foam plastic, the top end is connected with the top vibration excitation loading device, and the end is connected with the inner wall of the movable water tank. This test device studies the transmission process and motion characteristics of the dual-frequency excitation response generated by the floating structure under the action of wind, waves and currents along the slow-wave flexible riser, so that the analysis results of the system collected data obtained through the indoor model test can be used for deep-water flexibility. Riser configuration design and theoretical analysis provide reference.

Description

technical field [0001] The invention relates to the field of motion response simulation devices of flexible risers, in particular to a multi-slow-wave flexible riser motion response simulation device under the action of combined motion of wave frequency and slow drift of a floating structure under deep-water working conditions, which can be used to simulate wind, waves and currents The transmission process and motion response characteristics of the dual-frequency excitation response generated by the floating structure along the slow-wave flexible riser under the action, and the influence of the slow-wave riser layout configuration on the dynamic response of the deepwater riser and the movement of the touchdown area are studied. decoupling mechanism. Background technique [0002] As a better solution for oil and gas transportation, steel catenary risers have been widely used in deepwater oil and gas development. However, with the continuous increase of the operating water de...

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Problems solved by technology

[0005] The purpose of the present invention is to address the deficiencies in the prior art, and propose a multi-slow-wave type flexible riser motion response simulation device under the combined motion of the floating structure wave frequency and slow drift, which solves the problem of the first-order wave of the floating structure during the test. The simulation problem of frequency and second-order slow-drift coupled motion can simulate the transmission law and motion characteristics of the top excitation along the slow-wave flexible riser under the combined motion of wave-frequency and slow-drift of the floating structure, and measure different slow-wave arrangements The response characteristics and dynamic amplification coefficient of the flexible riser motion under the action of the configuration, collate the relevant test data and determine the displacement and acceleration of the multiple slow-wave flexible riser and the change of soil pressure under the combined motion of the wave frequency and slow drift of the floating structure Provide effective test data support and reference basis for the optimal design and theoretical analysis of the motion response configuration of slow-wave flexible risers under the combined motion of wave frequency and slow drift of floating structures

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