Multifunctional vacuum preloading consolidation experiment apparatus and method for performing closed type vacuum preloading experiment
An experimental device and multi-functional technology, applied in the direction of applying stable tension/pressure to test the strength of materials, etc., to achieve the effect of simplifying the loading and unloading process and facilitating experimental operations
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[0053] Example one
[0054] See figure 1 , figure 2 The multifunctional vacuum pre-compression consolidation experiment device provided by the present invention includes a vacuum pre-compression consolidation chamber, which is composed of a top plate 1, a base 25, and a rigid transparent sleeve. The rigid transparent sleeve includes an upper sleeve 20, a middle upper sleeve 21, a middle lower sleeve 22, and a lower sleeve 23. The upper surface of the upper sleeve 20 is embedded in the top plate sleeve groove 2 provided on the top plate 1, and the lower sleeve 23. The large lower surface is inserted into the base sleeve groove 26 provided on the base 25. The upper sleeve 20, the upper middle sleeve 21, the lower middle sleeve 22 and the lower sleeve 23 are separated by the lower surface of the upper sleeve. The sleeve connecting protrusion 17 and the sleeve connecting groove 16 on the upper surface of the lower sleeve are engaged with each other; the top plate 1 and the base 25 ...
Example Embodiment
[0069] Example two
[0070] This implementation example is used to simulate the pressurized vacuum pre-compression test and is basically the same as the first implementation example, except for:
[0071] In the second step of implementation example 1, before laying the high-strength pre-compression membrane, a pressurized filter tube (see utility new patent ZL03220509.0) is laid. The pressurized filter tube is composed of a spiral elastic support frame and a filter. Composed of cloth, the front end of the pressurized filter tube is screwed with a conical head, the rear end of the last section of the pressurized filter tube is screwed with a flange, one end of the thin hose is connected with the flange, and it passes through the air pressure measuring hole 4 and the air pressure control The air pressure controller 43 is connected to the booster pump 41, and the air pressure required for the experiment can be controlled by the air pressure controller. At this time, the valve connect...
Example Embodiment
[0072] Example three
[0073] This implementation example is used to simulate positive and negative pressure cyclic precompression test research. It is basically the same as the first implementation example, but the difference is:
[0074] In the sixth step of the first implementation example, the air vent 5 is blocked with the sealing bolt 6 to keep the air vent 5 sealed, the branch pipeline valve connecting the three-way interface and the booster pump 41 is closed, and the three-way interface and cone are opened The branch pipeline valve connected to the bottle 39 is opened, the branch pipeline valve connected to the vacuum pump 40 is opened, and the vacuum pump 40 is turned on to perform the vacuum preloading preliminary consolidation test. When the soil consolidation degree reaches 40%, close the branch pipeline valve connected to the vacuum pump 40, close the vacuum pump 40, and open the branch pipeline valve connected to the booster pump at the same time, open the booster pum...
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