Portable triaxial stress strain test device loaded by reaction force

A technology of counter force loading and triaxial stress, applied in the direction of applying stable tension/pressure to test the strength of materials, measuring devices, instruments, etc., can solve the problems of low intelligence level and difficult triaxial stress and strain experiments, and achieve transmission High efficiency, enhanced portability, and convenient operation

Active Publication Date: 2019-07-23
HEFEI UNIV OF TECH
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0006] On the basis of the traditional triaxial instrument, the present invention uses the way of counter force loading to complete the loading of axial pressure and confining pressure. question

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  • Portable triaxial stress strain test device loaded by reaction force
  • Portable triaxial stress strain test device loaded by reaction force
  • Portable triaxial stress strain test device loaded by reaction force

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Embodiment Construction

[0029] The specific embodiments of the present invention will be further described below in conjunction with the accompanying drawings.

[0030] Depend on figure 1 As shown, the present invention is a portable triaxial stress-strain testing device using counter force loading, including an experimental device, a sensor group, a power loading device 9 and a servo motor 17 .

[0031] Described experimental device comprises a rectangular counter force beam 1, a rectangular confining pressure loading beam 21, two rigid transmission rods 10, two stainless steel hollow cylinders 18, a pressure chamber 6 and a sample package placed in the pressure chamber 6 25. The reaction force beam 1, the confining pressure loading beam 21, the pressure chamber 6 and the sample package 25 are kept concentric.

[0032] The pressure chamber 6 is a circular hollow device. In this embodiment, there is a counterforce piston 4 on the upper part of the pressure chamber, and a pressure chamber base 16 on ...

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Abstract

The invention provides a portable triaxial stress strain test device loaded by a reaction force. The portable triaxial stress strain test device comprises an experimental device, a sensor group, a power loading device and a servo motor. The servo motor provides axial pressure and confining pressure loading power for experiments, and the single power source optimization design of the experimental device is realized. A linear displacement sensor, a confining pressure sensor and a stress sensor form a data acquisition unit, and a closed loop is formed by the data acquisition unit and the servo motor, so that the automatic control of an experimental path is realized. According to the portable triaxial stress strain test device loaded by the reaction force provided by the invention, the loadingof the axial pressure and the confining pressure can be realized by means of the reaction force action of internal structures of the experimental device, such as a reaction cross beam and a reactionpiston and the like, and the automatic control can be realized through the servo motor and the sensor group. The experimental device is highly integrated, easy to operate, economical and portable, andcan effectively solve the problem of difficult triaxial stress strain experiments of field soil samples.

Description

technical field [0001] The invention relates to the technical field of geotechnical engineering, in particular to an experimental device capable of performing triaxial stress-strain testing in a counter force loading manner. Background technique [0002] In the geotechnical engineering experiment, the geotechnical triaxial test instrument is a basic experimental instrument developed to study the stress-strain relationship of the soil. It simulates the three-dimensional stress state of the foundation soil to measure the strength and deformation characteristics of the soil. The basic working principle of the triaxial instrument is to pressurize the pressure chamber of the triaxial instrument with a hydraulic loading device to provide two radial orthogonal stresses of the soil sample; to the stress. During the experiment, the three orthogonal stresses, axial deformation and volume change of the soil sample were recorded. Based on these experimental data, the mechanical perfor...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N3/02G01N3/12
CPCG01N3/02G01N3/12
Inventor 查甫生冀春杰许龙康博刘晶晶
Owner HEFEI UNIV OF TECH
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