Fracture Visualization Integrated Soil Uniaxial Tensile Device

Abstract

The invention discloses a broken and visualized integrated soil uniaxial stretching device, which comprises a base plate, a visualized integrated mold, a fixed plate and an oil pressure tensioner; the base plate has two rows of sliding balls; the visualized integrated mold is slidingly connected to the two rows of sliding On the ball; including mold fixed half, mold stretched half, L-shaped plate, fixed bending iron and sliding bar; mold fixed half is connected with fixed plate, mold stretched half is connected with hydraulic tensioner; several sliding bars are arranged side by side On the sliding ball between the mold fixed half and the mold stretching half; the L-shaped plate leans on both sides of several sliding bars. The sample chamber is dumbbell-shaped. The invention integrates the sample preparation mold and the movable fixture, reduces the process of demoulding and clamping of the sample, makes the detection simple and convenient, and can observe the fracture process and the exact position of the fracture of the sample, and uses two rows of sliding balls to reduce the visual integration The friction with the bottom plate during the stretching process of the mold can achieve a more ideal test state.

Description

technical field [0001] The invention relates to a soil engineering test device, in particular to a fracture visualization integrated soil uniaxial tension device. Background technique [0002] Soil is the product of rock weathering, and has certain shear strength, compressive strength and tensile strength in terms of mechanical properties. However, in engineering construction, the tensile strength of soil is basically not used by people, so when the predecessors studied the strength of soil, most of them ignored the tensile strength of soil. However, it is an unavoidable problem that soil bears tensile stress sometimes in engineering, and tensile stress often occurs around tall buildings. Therefore, in recent years, the problem of soil tensile strength has become more and more prominent, which has aroused people's wide interest. [0003] The test methods for measuring the tensile strength of soil mainly include: uniaxial tensile test, triaxial tensile test, soil beam bendi...

AI Technical Summary

Problems solved by technology

However, due to the use of fixtures to fix the sample, it is easy to produce subtle relative sliding, so it is not conducive to the study of soil deformation.

[0007] The traditional uniaxial stretching device is to apply a release agent on the back surface of the mold, and then start the sample preparation. After the sample preparation is completed, the sample is taken out of the mold, and then put into the movable fixture or bonded with the movable fixture and adhesive. Test at both ends of the sample, which will not only cause damage to the sample, but also very cumbersome, the relative sliding phenomenon of fine lines will occur when the sample is fixed by the movable fixture, which will affect the test result

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