Test simulator of conduit soil system

Abstract

The invention provides a test simulator of a conduit soil system. The test simulator comprises an external flow blocking module, a conduit simulation module, a soil simulation module, a bottom supportmodule and a measurement and analysis module. The external flow blocking module isolates internal machinery from the external flow field, and a conduit soil simulator is prevented from disturb the flow of the external flow field in the test process; the rigidity of a stretching spring in the soil simulation module is adjusted to simulate soil effects in different properties; a knob mounted in oneside of the soil simulation module is used to accurately adjust the pretension of the stretching spring, and a single-component force instrument is connected to measure the magnitude of the pretension; and the measurement and analysis module obtains data of a pulling force value in the two ends of the conduit. The test simulator is portable in structure, easy to dismount, convenient to adjust thepretension in the test process, accurate in measurement data, and capable of simulating the conduit soil system in the real marine environment.

Description

technical field [0001] The invention relates to the technical field of marine engineering, in particular to a test simulation device for a conduit soil system, in particular to a simulation system for simulating a conduit and soil in a real marine environment. Background technique [0002] With the deepening of human development of marine resources, marine engineering is gradually advancing to deep water, especially the dynamic response of marine structures represented by risers has attracted people's attention again. The riser is a component used to isolate seawater and support various pipelines on the offshore drilling platform. It has a complex geometric structure, and each part has different physical parameters. Considering factors such as top platform motion, background ocean currents, vortex-induced vibration (VIV), and riser-soil interactions, the dynamic response characteristics of a riser in a realistic marine environment will be very complex. In addition, the rise...

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Problems solved by technology

[0003] There have been many experimental studies on the conduit and soil system, but the current test devices generally have the following deficiencies: (1) Usually, the main research is on the influence of platform motion and background ocean currents, and the soil is directly used as a model simulation of real soil in the test , did not consider the influence of the scale ratio; (2) did not carry out the force measurement and analysis of the conduit model, which has limited reference for the design of the conduit in the actual project

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