Testing device of compacted soil samples and sampling method thereof

A test device and soil compaction technology, which is applied in the field of civil engineering, can solve the problems of cumbersome operation and difficult control of dry density, and achieve the effect of overcoming non-vertical guide rods, controllable dry density, and uniform soil samples

Active Publication Date: 2017-11-03
ZHONGYUAN ENGINEERING COLLEGE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention discloses a compacted soil sample test device and a sample preparation method thereof in order to solve the technical problems that the existing compacted soil sample preparation tools and methods are cumbersome to operate and the dry density is not easy to control

Method used

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  • Testing device of compacted soil samples and sampling method thereof
  • Testing device of compacted soil samples and sampling method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Such as Figure 1-2 A compacted soil sample test device shown includes a support 2, a compaction system, a sample preparation mold 1 and a control system, the support base 2-1 is a circular frame, and support side plates are provided on both sides of the support base 2-1 2-2, the support side plate 2-2 is an arc long plate, the upper top surface of the support 2 is provided with a support top plate 2-3, and the top of the support top plate 2-3 middle part is provided with a motor 11 and a pulley block 10, and 9 one ends of the traction rope are connected to the The motor 11 is connected, the other end bypasses the pulley block 10 and then passes through the traction hole 20 in the middle of the bracket top plate 2-3 to connect with the connection hole 17 above the hammer 4; the compaction system includes a guide rod 3, a hammer 4 , compaction base plate 16 and limit plate 5, guide rod 3 is located at the middle part of support top plate 2-3, guide rod 3 is provided with...

Embodiment 2

[0029] A compacted soil sample test device, the support base 2-1 is provided with a circular groove 18, the bottom of the groove 18 has a positioning hole 19, and the diameter of the circular groove 18 matches the diameter of the sample preparation mold 1; The bracket base 2-1 is a circular rigid base with a thickness of 15mm and a diameter of 12cm. The positioning groove is cylindrical and fixed in the rigid base. The depth of the groove is 5mm. There are 3 positioning holes inside the groove, and the diameter of the positioning hole is 5mm. , depth 5mm; rigid body thickness 10mm, width 50mm, height matches the height of the ring knife and the guide rod. The diameter of the positioning sleeve 15 is larger than that of the guide rod 3, the positioning sleeve 15 matches the guide rod 3, and the positioning sleeve 15 passes through the support top plate 2-3. Other structures are the same as in Embodiment 1.

Embodiment 3

[0031]A compacted soil sample test device, the limiting plate 5 is ┓ type, the limiting plate 5 is fixedly connected to the compacted bottom plate 16, and the difference between the height of the top surface of the compacted bottom plate 16 and the height of the bottom surface of the positioning sleeve 15 is less than the height of the guide The height of pole 3. , the guide rod is a solid steel column with a diameter of 10mm, the compacted bottom plate is a rigid steel plate with a diameter of 60.8mm and a height of 10mm, and the hammer is a rigid hollow cylinder with an inner diameter of 11mm and an outer diameter of 50mm and a height of 60mm. The limiting plate is a rigid steel plate with a thickness of 10mm, a width of 10mm, and a height of 30mm. The height of the limiting plate is equal to the difference between the 40mm upper cylinder of the upper part of the sample preparation mold and the 10mm thickness of the compacted bottom plate. The upper part of the hammer 4 is sy...

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Abstract

The invention belongs to the field of civil engineering, and relates to a testing device of compacted soil samples and a sampling method thereof. The testing device comprises a support, a compaction system, a sampling mould and a control system, wherein a support base is of a circular frame; support side plates are arranged on two sides of the support base; a support top plate is arranged on an upper top surface of the support; a motor and a pulley group are arranged above the middle of the support top plate; one end of a traction rope is connected with the motor while the other end of the traction rope passes by the pulley group and then penetrates through a traction hole formed in the middle of the support top plate and is connected with connecting holes formed in an upper part of a hammer; the compaction system comprises a guide rod, the hammer, a compaction bottom plate and limiting plates; an upper part of the sampling mould is of a hollow circular column and a lower part of the sampling mould is a hollow cylinder with a bottom part; a circular cutter is arranged between the upper part of the sampling mould and the lower part of the sampling mould; the control system comprises a pressure sensitive sensor, an infrared transmitting sensor, a motor and a controller. According to the testing device and the sampling method thereof disclosed by the invention, the technical problems that the guide rod is not vertical and the dry density are difficultly controlled in a process of manually manufacturing the compacted soil samples are solved.

Description

technical field [0001] The invention belongs to the field of civil engineering, and relates to a compacted soil sample test device and a sample preparation method thereof. Background technique [0002] Indoor geotechnical test is an important method to obtain soil strength, consolidation and permeability indicators, which can provide relevant parameters for engineering design and is an important part of geotechnical engineering investigation and design. Among them, soil sample preparation is a necessary step to obtain relevant parameters, and the quality and method of soil sample preparation are the key and prerequisite for obtaining the accuracy of parameters. [0003] During the experiment, it was found that compacted and compacted soil samples have certain differences in micropore distribution, and different soil sample preparation methods have a great influence on their physical and mechanical parameters. According to the actual engineering status, it is very important ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N1/28G01N1/36
CPCG01N1/286G01N1/36G01N2001/366G01N2001/2873
Inventor 李新明任克彬孙玉周马豪豪惠存刘晨辉卢天佑
Owner ZHONGYUAN ENGINEERING COLLEGE
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