Sample sealing device and sealing method for geotechnical true triaxial instrument
A technology of true triaxial instrument and sealing device, applied in the field of geotechnical true triaxial instrument, can solve the problems such as the rubber membrane can not bear large pressure, low utilization rate, easy to be damaged, etc., to simplify the true triaxial sample preparation and sealing Process, high repetition rate, success rate and effect of high repetition rate
Inactive Publication Date: 2018-04-10
TSINGHUA UNIV
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Problems solved by technology
Existing methods such as the method of connecting the rubber membrane with the upper and lower loading plates tend to affect the application of force
Another method, such as using glue to seal the rubber membrane with the sample, has the disadvantage of being easily damaged and leaking, the inside of the rubber membrane cannot withstand high pressure, and the utilization rate is low.
Method used
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[0016] The sample sealing device and sealing method of the geotechnical triaxial instrument provided by the present invention will be further described in detail below in conjunction with the drawings and specific embodiments.
[0017] See Figure 4 with Figure 5 , The embodiment of the present invention provides a sample sealing device 10 of a geotechnical triaxial instrument. The sample sealing device 10 of the geotechnical triaxial instrument is composed of a left sample cap 11, a right sample cap 11, a special-shaped rubber membrane 12 and a sample loading frame 13.
[0018] Please refer to figure 1 , The left sample cap 11 and the right sample cap 11 have exactly the same structure, and respectively include an elliptical cylinder 110 and a connector 111. The elliptical cylinder 110 and the connector 111 are made of metal materials. In this embodiment Among them are all stainless steel materials. A through hole 112 is opened between the top surface and the bottom surface of ...
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The invention relates to a sample sealing device of a geotechnical true triaxial instrument, which comprises a left sample cap, a right sample cap, a special-shaped rubber film and a sample loading frame. The left sample cap is provided with a through hole, and the right sample cap is provided with a through hole. The special-shaped rubber film is composed of a sample containing rubber film, a left sample cap containing rubber film and a right sample cap containing rubber film, and the left sample cap containing rubber film and the right sample cap containing rubber film are respectively arranged on the The opposite sides of the sample storage rubber film, the sample storage rubber film is used to hold the sample, the left sample cap contains the rubber film for the left sample cap, and the right sample cap contains the rubber film For mounting the right sample cap. The sample loading frame has a receiving cavity, and the sample loading frame is used for opening the special-shaped rubber membrane and loading the sample into the special-shaped rubber membrane. The sample sealing device of the geotechnical true triaxial instrument provides a new method for the hybrid triaxial sample sealing process. This method is simple and easy to implement, has little influence on loading, and can withstand high pressure. In addition, the invention also relates to a sample sealing method of a geotechnical true triaxial instrument.
Description
Technical field [0001] The invention relates to a geotechnical true triaxial instrument, in particular to a sample sealing device and a sealing method of a mixed-loading geotechnical true triaxial instrument. Background technique [0002] Ordinary triaxial apparatus can only simulate the mechanical characteristics of soil under axisymmetric stress state. With the in-depth study of soil mechanical properties, true triaxial apparatus has been developed. The true triaxial can be loaded in three directions and can study the mechanical properties of soil under complex stress conditions. [0003] True triaxial can be divided into three types according to the loading type: rigid loading type, flexible loading type and mixed loading type. Among them, the mixed loading type is most commonly used, and how to reduce the influence between the loading plates and how to seal the sample is the technical difficulty in the test. The true triaxial sample is a rectangular parallelepiped, which need...
Claims
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IPC IPC(8): G01N1/28
Inventor 王远于玉贞孙逊吕禾
Owner TSINGHUA UNIV