A Test System for Penetration and Uplift Induced Penetration Erosion of Suction Buckets

Abstract

The invention relates to a test system for the phenomenon of penetration and erosion induced by the sinking and pulling up of a suction bucket, comprising a model box body, soil particles, a model suction bucket, a loading frame, a guide rod, a threaded loading pipe, a motor, a ferromagnetic metal block, Electromagnet, force sensor and power supply, the loading frame is fixedly connected inside the main body of the model box, and is located above the model suction barrel, the motor is installed on the loading frame, the inside of the threaded loading tube is provided with a through hole, and the guide rod is located in the In the through hole, the inner side of the threaded loading tube is also provided with a first groove, the upper end of the first groove is provided with an electromagnet, the lower end is provided with a ferromagnetic metal block, and the outer side of the guide rod is provided with a shape of the ferromagnetic metal block. The continuous second groove is matched; the test system is also provided with a force sensor connecting the guide rod and a displacement sensor measuring the distance between the model suction bucket and the loading frame. Compared with the prior art, the present invention has the advantages of less disturbance, rich functions, simple operation and high test accuracy.

Description

technical field [0001] The invention relates to the technical field of physical experiment simulation of geotechnical engineering, in particular to a test system for the phenomenon of penetration and erosion induced by suction bucket subsidence and uplift. Background technique [0002] The suction bucket is a basic form with the upper end closed and the lower end open, and is widely used in offshore wind power foundations. When the suction bucket sinks under the negative pressure in the sand, on the one hand, the negative pressure reduces the penetration resistance of the suction bucket, and on the other hand, when the seepage is too large, osmotic erosion will occur. When osmotic erosion occurs, the fine particles in the bucket are taken out with the water flow, the soil in the bucket loses mass and the void ratio changes, and the permeability and mechanical properties of the soil in the bucket also change, which affects the sinking of the suction bucket. Penetration and p...

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Problems solved by technology

[0007] The purpose of the present invention is to provide a suction bucket sinking and pulling up process with less disturbance, rich functions, simple operation and high test accuracy in order to overcome the defect of the above-mentioned prior art that it cannot realize the undisturbed transition of the suction bucket sinking and pulling up process. Test system for seepage erosion induced by uplift

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