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Dynamic true-triaxial apparatus for soil

A dynamic true triaxial instrument and axial technology, which is applied in the direction of instruments, scientific instruments, measuring devices, etc., can solve the problems of inability to simulate dynamic loads and insufficient detection accuracy, and achieve the effect of improving the level of testing technology

Active Publication Date: 2013-06-26
XIAN UNIV OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a dynamic true triaxial instrument for soil, which solves the problem that the detection accuracy is not high enough because the true triaxial instrument in the prior art cannot simulate the dynamic load situation

Method used

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  • Dynamic true-triaxial apparatus for soil
  • Dynamic true-triaxial apparatus for soil
  • Dynamic true-triaxial apparatus for soil

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Embodiment Construction

[0021] Such as figure 1 , image 3 As shown, the structure of the soil dynamic triaxial instrument of the present invention is that a frame support 2 is provided on the upper end of the base 1, and the frame support 2 is fixedly connected to the top reaction frame 6 through a connecting rod, and the top is reversed. The upper end of the force frame 6 is equipped with an axial electric cylinder 25; an axial adjustment piston 7 is installed in the frame support 2, and the frame support 2 is provided with a lifting control switch 3, a fine adjustment handle 4 and a coarse adjustment handle 5, The control switch 3, the fine adjustment handle 4 and the coarse adjustment handle 5 are all connected with the axial adjustment piston 7. The lift control switch 3, the fine adjustment handle 4 and the coarse adjustment handle 5 are all used to adjust the axial height of the axial adjustment piston 7. The piston head 8 of the adjustment piston 7 upwardly is fixedly connected with the axial h...

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Abstract

The invention discloses a dynamic true-triaxial apparatus for soil. A top counter-force rack is provided with an axial electric cylinder; an axial adjusting piston is mounted in a rack support, and is upward connected with an axial hydraulic cylinder and a pressure chamber base in sequence, the pressure chamber base is upward encircled to form a pressure chamber with a pressure chamber top cover through a square cylinder wall, the middle part of the upper surface of the pressure chamber base is used for placing a sample, four faces of the sample are four pressure cavities, and the cylinder wall of each pressure cavity is provided with a lateral displacement measuring mechanism; a sample cap is arranged in the pressure chamber top cover, and is upward connected with an axial force transmission bar which is coaxially connected with the axial electric cylinder; and each sensor is connected with a signal acquisition part, and the signal acquisition part and a loading mechanism is connected with a loading control part. The dynamic true-triaxial apparatus for soil, provided by the invention, can respectively add dynamic load in three stress directions under a common stress condition in practical projects.

Description

Technical field [0001] The invention belongs to the technical field of geotechnical engineering testing equipment, and relates to a soil dynamic triaxial instrument. Background technique [0002] At present, the existing geotechnical dynamic properties testing equipment mainly includes dynamic single shear instrument, conventional vibration triaxial instrument, resonance column instrument, and vibration torsion shear triaxial instrument. Among them, the vibratory torsion shear triaxial apparatus has developed from a single application of hoop cyclic torsional shear stress to a three-way vibration loading mechanism that simultaneously applies axial cyclic normal stress, hoop cyclic torsional shear stress and lateral static compressive stress. However, the existing dynamic torsion shear triaxial apparatus is relatively insufficient in engineering application and research due to the cost of the instrument and the complexity of the test. The existing true triaxial apparatus cannot si...

Claims

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Application Information

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IPC IPC(8): G01N3/00G01N3/02
Inventor 邵生俊褚峰罗爱忠王强
Owner XIAN UNIV OF TECH
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