Test system for penetration erosion phenomenon induced by penetration and uplift of suction bucket

Abstract

The invention relates to a test system for a penetration and uplift induced penetration erosion phenomenon of a suction bucket. The test system comprises a model box main body, soil particles, a model suction bucket, a loading frame, a guide rod, a threaded loading pipe, a motor, a ferromagnetic metal block, an electromagnet, a force sensor and a power supply, wherein the loading frame is fixedly connected inside the model box main body and is positioned above the model suction bucket; the motor is installed on the loading frame, a through hole is formed in the threaded loading pipe, the guide rod is located in the through hole, a first groove is further formed in the inner side of the threaded loading pipe, an electromagnet is arranged at the upper end of the first groove, a ferromagnetic metal block is arranged at a lower end of the first groove, and a continuous second groove matched with the ferromagnetic metal block in shape is formed in the outer side of the guide rod; the test system is further provided with a force sensor connected with the guide rod and a displacement sensor for measuring the distance between the model suction bucket and the loading frame. Compared with the prior art, the device has advantages of less disturbance, rich functions, simplicity in operation, high test precision and the like.

Description

technical field [0001] The invention relates to the technical field of geotechnical engineering physics experiment simulation technology, in particular to a test system for seepage and erosion induced by the penetration and uplift of a suction bucket. Background technique [0002] The suction barrel is a foundation form with the upper end closed and the lower end open, and is widely used in offshore wind power foundations. When the suction barrel sinks in sandy soil under negative pressure, the negative pressure reduces the penetration resistance of the suction barrel on the one hand, and on the other hand seepage erosion will occur when the seepage is too large. When seepage erosion occurs, the fine particles in the bucket will be taken out with the water flow, the soil in the bucket will lose mass and the void ratio will change, and the permeability and mechanical properties of the soil in the bucket will also change, thus affecting the settlement of the suction bucket. T...

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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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