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Geosynthetic material direct tensile/pull-out tester and test method

A geosynthetic material, pull test technology, applied in the analysis of materials, the use of stable tension / pressure test material strength, instruments and other directions, can solve the problems of multiple errors, split tensile strength is not easy to operate, etc., to improve the accuracy performance, and the effect of improving utilization

Active Publication Date: 2020-10-30
AIR FORCE UNIV PLA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The splitting tensile strength stipulated in the specification has the disadvantages that it is not easy to operate, and it should bring more errors in the process of sample preparation and testing

Method used

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  • Geosynthetic material direct tensile/pull-out tester and test method
  • Geosynthetic material direct tensile/pull-out tester and test method
  • Geosynthetic material direct tensile/pull-out tester and test method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0075] The present invention specifically provides a geosynthetics straight-pull tester, which includes a workbench composed of a horizontal plate 1 and support legs 2, and is characterized in that it also includes a driving device, a pulling device, and a displacement measuring device arranged on the workbench. device, tension measuring device and data collector.

[0076] refer to figure 1 and 6 As shown, specifically, the drawing device includes a mounting plate 23 arranged on the workbench, two long sides of the mounting plate 23 are provided with symmetrical chute 2301, and the chute 2301 is provided with Strip plate 24, described strip plate 24 is provided with a plurality of equally spaced through holes, and described through hole communicates with chute 2301, all is provided with ball 26 in each through hole, in strip plate 24 A left slide plate 27 and a right slide plate 28 are arranged on the top, and the upper ends of the left slide plate 27 and the right slide pla...

Embodiment 2

[0095] The present invention also provides a pull-out tester for geosynthetics, which includes a workbench composed of a horizontal plate 1 and support legs 2, and is characterized in that it also includes a driving device, a pullout device, and a displacement measuring device arranged on the workbench. device, tension measuring device and data collector.

[0096] refer to image 3 As shown, specifically, the drawing device includes a mounting plate 23 arranged on the workbench, two long sides of the mounting plate 23 are provided with symmetrical chute 2301, and the chute 2301 is provided with Strip plate 24, described strip plate 24 is provided with a plurality of equally spaced through holes, and described through hole communicates with chute 2301, all is provided with ball 26 in each through hole, in strip plate 24 Sliding plate 25 is arranged on it, and the bottom of described sliding plate 25 is slidably connected with ball 26, and the upper end of described sliding pla...

Embodiment 3

[0116] The difference from Example 2 is that the exposed fiber of the sample in this example is clamped in the chuck 2201 at the rear end of the connecting rod 22 and fixed by the fixing screw 2202, and the front end of the connecting rod 22 is connected to the force sensor 15. This embodiment is applicable to a single fiber pulling test.

[0117] The fixed block on the right side of the original direct shear instrument is designed to be non-adjustable up, down, left, and right, which is not conducive to the alignment of the pull-out test and the straight-pull test. Especially for the pull-out test, the heights of the three layers of fibers are different, so it is transformed into a Mechanism that can be adjusted up and down. For the centering problem, it is divided into left and right centering and up and down centering. Left and right centering is solved by adjusting the relative position of the clamping structure on the left and right of the clamp head (such as Figure 5 A...

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Abstract

The invention discloses a geosynthetic material direct tensile / pull-out tester, which comprises a workbench composed of a horizontal plate and supporting legs, and further comprises a driving device,a pull-out device, a displacement measuring device, a tension measuring device and a data collector which are arranged on the workbench. The invention also discloses a test method for carrying out a drawing test on the geosynthetic material by using the direct tensile / pull-out tester. According to the horizontal direct tensile / pull-out tester and a sample preparation mold and a sample preparationmethod matched with the horizontal direct tensile / pull-out tester, tests find that the designed instrument and mold are scientific and efficient, one machine has two purposes, and direct tensile testsand pull-out tests of plain soil, cement soil and fiber reinforced cement soil samples can be well achieved.

Description

technical field [0001] The invention belongs to the field of measuring instruments, and in particular relates to a geosynthetics CZ / pull tester and a test method. Background technique [0002] There are many domestic institutions and personnel conducting research on fiber-reinforced plain soil and fiber-reinforced solidified soil, but there are two main institutions and teams that can maintain coherence and system, namely: Tang Chaosheng’s team from Nanjing University and Li Guangxin’s team from Tsinghua University In addition, Bao Chenggang's team from the Yangtze River Academy of Sciences has conducted more analyzes on the mechanical mechanism of the reinforced soil (not limited to fiber reinforced soil, but also geosynthetics reinforced soil) structures, such as the interface between reinforced soil and other materials, so the following will be divided into three parts. The summary is the research results of Tang Chaosheng's team at Nanjing University, Li Guangxin's team ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N3/08G01N3/02G01N1/28
CPCG01N3/08G01N3/02G01N1/28G01N2203/0003G01N2203/0017G01N2203/005G01N2203/0075G01N2203/0252G01N2203/0298G01N2203/0676G01N2203/0682
Inventor 张俊胡成许巍翁兴中苏立海刘杰谭万鹏姚志华
Owner AIR FORCE UNIV PLA
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