A spherical particle multi-point contact test device and its loading method

A spherical particle, test device technology, applied in measuring device, using stable tension/pressure test material strength, instrument, etc., can solve the problem of inability to meet the needs of use, achieve simple operation, accurate test results, repeatability high effect
CN110501214BActive Publication Date: 2020-08-14TONGJI UNIV
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Patents(China)
Current Assignee / Owner
TONGJI UNIV
Publication Date
2020-08-14

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Abstract

The invention relates to a spherical particle multi-point contact test device for detecting the contact force of spherical particles. The device includes a single-sphere restraining clamp, a multi-sphere restraining clamp arranged below the single-sphere restraining clamp, and a measuring assembly arranged at the multi-sphere restraining clamp. Testing spherical particles are arranged between thesingle-sphere restraining clamp and the multi-sphere restraining clamp. Compared with the prior art, the spherical particle multi-point contact test device has the following advantages: the multi-point contact operation of coarse-grained soil particles is realized; and testing of spheres with different particle diameters can be realized by measuring the calculated contact force and the flexibilityof the instrument.
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Description

technical field

[0001] The invention relates to the field of multi-point contact crushing and loading tests of coarse-grained soil particles, in particular to a spherical particle multi-point contact test device and a loading method based on a biaxial rheometer capable of measuring contact point forces. Background technique

[0002] More and more high-dam reservoirs are being built in the west, and most of them are rock-fill dams with a height of more than 150m. In the next 10 years, more than 40 super-large hydropower stations will be built in the western region, and the height of the rock-fill dams has grown to 300m. class. Due to the significant increase in dam height, the stress conditions of the dam body are more complex, and the construction safety of earth-rock dams in my country is facing new challenges. The research on the mesomechanical properties, particle breakage characteristics and rheological properties of coarse-grained soils under high stress is urgently ne...

Claims

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