Automatic rheological direct-shear apparatus and experimental operation method thereof

A direct shear instrument, fully automatic technology, applied in the direction of non-electric variable control, instruments, scientific instruments, etc., can solve the problems of reducing the utilization rate of test equipment, increasing test cost, and difficulty in combining the two into one, so as to reduce test cost, Increased utilization, full-featured results

Pending Publication Date: 2017-07-11
南京泰克奥科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the different mechanism of action, the functions of the two traditional test instruments are too single, and it is dif

Method used

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  • Automatic rheological direct-shear apparatus and experimental operation method thereof
  • Automatic rheological direct-shear apparatus and experimental operation method thereof
  • Automatic rheological direct-shear apparatus and experimental operation method thereof

Examples

Experimental program
Comparison scheme
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Example Embodiment

[0047] Example 1

[0048] Such as Figure 1-13 As shown, a fully automatic rheological direct shear apparatus includes a rheological direct shear apparatus 1 and a computer 2. The rheological direct shear apparatus 1 is connected to a computer 2 through a communication protocol, and can be connected through the computer 2 or the rheological The control panel 1-1 on the direct shear apparatus 1 realizes the control of the test process.

[0049] The rheological direct shear apparatus 1 includes a control panel 1-1, a horizontal drive device 1-2, a first horizontal load sensor 1-3, a shear container 1-4, a track 1-5, and a vertical displacement sensor 1- 7. Upper loading beam 1-8, horizontal displacement sensor 1-16, vertical load sensor 1-19, second horizontal load sensor 1-21, lower shear box 1-23, upper shear box 1-24, bearing Gland 1-28, linear bearing 1-31, baffle 1-32, axial loading device 1-34, lower loading beam 1-35 and tie rod 1-45;

[0050] The horizontal drive device 1-2 i...

Example Embodiment

[0067] Example 2

[0068] Such as Picture 12 As shown, the working principle of the automatic rheological direct shear instrument for direct shear rheological test is as follows:

[0069] Work operation instructions (vertical loading, horizontal shear rate, shear volume, shear force, etc.) are sent to the embedded microcomputer control system (MCU system) through the computer 2 or the control panel 1-1 button, and the embedded microcomputer control system will Commands are assigned to the corresponding system of the invention:

[0070] Vertical servo loading system: the embedded microcomputer control system sends the target axial stress σ to the vertical servo loading drive device t Load command, the vertical motor / air pressure valve drive device drives the vertical motor 1-42 / electric control valve to work, and then the vertical worm gear reducer / cylinder works, and the lower loading beam 1 is pushed through the second loading joint 1-36 -35 makes the pull rod 1-45 move downwards ...

Example Embodiment

[0072] Example 3

[0073] Such as Figure 13 As shown, the automatic rheological direct shear instrument, the working principle of the direct shear stress relaxation test of the automatic rheological direct shear instrument is:

[0074] Work operation instructions (vertical loading, horizontal shear rate, shear volume, shear force, etc.) are sent to the embedded microcomputer control system (MCU system) through the computer 2 or the control surface 1-1 button, and the embedded microcomputer control system will Commands are assigned to the corresponding system of the present invention:

[0075] Vertical servo loading system: the embedded microcomputer control system sends the target axial stress σ to the vertical servo loading drive device t Load command, the vertical motor / air pressure valve drive device drives the vertical motor 1-42 / electric control valve to work, and then the vertical worm gear reducer / cylinder works, and the lower loading beam 1 is pushed through the second loadi...

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Abstract

The invention discloses an automatic rheological direct-shear apparatus and an operation method thereof. The automatic rheological direct-shear apparatus comprises a rheological direct-shear instrument (1) and a computer (2). The rheological direct-shear instrument (1) is under servo closed-loop control, a vertical load sensor (1-19) in a vertical servo loading system is employed for adjusting and controlling axial stress applied on a sample (1-30), and meanwhile, a first horizontal load sensor (1-3) arranged in a horizontal shear driving system and connected with a horizontal shear driving device is used for applying a constant a horizontal shear force on the sample (1-30), so direct-shear creep test of soil is realized; and at the same time, a horizontal displacement sensor (1-16) is employed for accurate control of the horizontal shear amount of the sample (1-30), so direct-shear strain relaxation test of soil is realized. The automatic rheological direct-shear apparatus provided by the invention can carry out both conventional direct-shear test and rheological direct-shear test on soil, has high stability and can realize accurate control of testing and whole-process automation of acquisition.

Description

technical field [0001] The invention relates to a fully automatic rheological direct shear instrument, in particular to a direct shear device capable of performing creep characteristics and stress relaxation characteristics of saturated / unsaturated soil materials and an experimental operation method thereof. Background technique [0002] In geotechnical engineering, in addition to being affected by physical factors such as the particle composition, mineral composition, and water content of the soil itself, the physical and mechanical properties of soil materials are also affected by external factors such as temperature, initial stress state, and time. For the time factor, the stress-strain relationship of soil mainly shows complex rheological properties, and the rheological properties of soil mainly include creep, stress relaxation, and strength reduction under long-term loading. [0003] In the laboratory test research, the rheological characteristics of the soil are genera...

Claims

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Application Information

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IPC IPC(8): G01N3/24G01N3/06G05D15/01
CPCG05D15/01G01N3/068G01N3/24G01N2203/0025G01N2203/0202G01N2203/0071G01N2203/0641Y02P90/02
Inventor 季李通
Owner 南京泰克奥科技有限公司
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