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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 difficult to combine them into one, which greatly reduces the utilization rate of the test equipment and increases the test cost.

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
Effect test

Embodiment 1

[0048] Such as Figure 1-13 Shown, a kind of automatic rheological direct shear instrument, it comprises rheological direct shear instrument 1 and computer 2, described rheological direct shear instrument 1 is connected with computer 2 through communication protocol, can pass computer 2 or rheological The control panel 1-1 on the direct shear instrument 1 realizes the control of the test process.

[0049] The rheological direct shear instrument 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 plate 1-32, axial loading device 1-34, lower loading beam 1-35 and pull rod 1-45;

[0050] The horizontal driving device 1-2 is fixed on the top sur...

Embodiment 2

[0068] Such as Figure 12 As shown, the fully automatic rheological direct shear instrument, the working principle of the direct shear rheological test carried out by the fully automatic rheological direct shear instrument is:

[0069] Work operation instructions (vertical loading, horizontal shear rate, shear amount, shear force, etc.) are sent to the embedded microcomputer control system (MCU system) through the computer 2 or the control panel 1-1 buttons, and the embedded microcomputer control system will The commands are assigned to the corresponding systems 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 Loading command, the vertical motor / pneumatic valve driving device drives the vertical motor 1-42 / electric control valve to work, and then the vertical worm gear reducer / air cylinder works, and pushes the lower loading beam 1 through the second...

Embodiment 3

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

[0074] Work operation instructions (vertical loading, horizontal shear rate, shear amount, shear force, etc.) are sent to the embedded microcomputer control system (MCU system) through the computer 2 or the control surface 1-1 buttons, and the embedded microcomputer control system will The commands are assigned to the corresponding systems of the 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 Loading command, the vertical motor / pneumatic valve driving device drives the vertical motor 1-42 / electric control valve to work, and then the vertical worm gear reducer / air cylinder works, and pushes the lower loading beam 1 through th...

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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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