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Layered compaction instrument of static triaxial test remolded soil

A technology of compaction instrument and soil remodeling, which is applied in the preparation of test samples, instruments, scientific instruments, etc., to achieve the effects of improving the success rate of tests, saving time, and not easily deformed

Pending Publication Date: 2019-04-16
ZHEJIANG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a layered compaction instrument for static triaxial test of remolded soil, which can solve the problems of manual planing

Method used

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  • Layered compaction instrument of static triaxial test remolded soil
  • Layered compaction instrument of static triaxial test remolded soil
  • Layered compaction instrument of static triaxial test remolded soil

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Embodiment 1 A layered compaction instrument for static triaxial test remolded soil according to the present invention, comprising a striking device 1 for striking soil samples, and a sleeve assembly 2 for covering outside the striking device And the base 3 for installing the sleeve assembly, the hitting device 1 includes the main rod 11 of the compaction meter, the height adjustment part 12 for adjusting the insertion depth of the main rod of the compaction meter and the Hitting part 13, the main rod 11 of the compaction instrument is a cylindrical rod body, and the outer wall of the rod is provided with an annular protrusion 111 and an annular groove 112 in the axial direction, and the annular protrusion 111 and the The annular grooves 112 are alternately arranged at intervals; the hitting part 13 is installed on the bottom end of the main rod 11 of the compaction instrument, and the end face of the hitting part 13 facing the base is fixed with barbs; the height adjust...

Embodiment 2

[0047]Embodiment 2 The present invention provides a layered compaction instrument for static triaxial test remolding soil: the disc base and the backing plate with barbs are composed, and the outer diameter of the disc base=the backing plate with barbs The outer diameter of > the outer diameter of the annular protrusion > the outer diameter of the rod > the outer diameter of the annular groove, the backing plate with barbs is connected with the disc base through bolts, and the barbs are welded on the end face of the backing plate facing the base; The outer wall of the shaft is provided with annular protrusions 111 and annular grooves 112 in the axial direction, and the annular protrusions 111 and the annular grooves 112 are alternately arranged at intervals; the pad is composed of two semi-circular rings; the three-lobed mold The sleeve is composed of three valve molds, the diameter of the lower half of the valve mold is slightly larger than that of the upper half; the base is ...

Embodiment 3

[0048] Embodiment 3 utilizes the layered compaction instrument of the static triaxial test remolded soil of the present invention to compact the steps as follows:

[0049] 1) According to the water content required for the test, calculate the required amount of water, and add it to the soil sample, stir evenly, put it in a sealed bag, and let it stand for 24 hours;

[0050] 2) According to the specifications, determine the number of compacted layers of the sample height and the height of each layer;

[0051] 3) Splice the three-lobe mold sleeve, apply a layer of Vaseline on the inner wall of the three-lobe mold sleeve, then fix the three-lobe mold sleeve with a collar and place it vertically in the slot of the base;

[0052] 4) According to the calculated result, weigh the amount of soil required for one layer of compaction, slowly pour it into the three-lobe mold sleeve, and finally level the surface of the soil sample;

[0053] 5) Put the block in the uppermost annular groo...

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Abstract

The layered compaction instrument of static triaxial test remolded soil comprises a striking device, a sleeve component and a pedestal. The striking device comprises a compaction instrument main rod,a height adjusting component, and a striking component. The compaction instrument main rod is a cylindrical rod body. The outer wall of the rod body is provided with annular embossments and annular grooves at an axial direction, and the annular embossments and the annular grooves are alternately arranged at intervals. The striking component is installed on the bottom end of the compaction instrument main rod and the end surface of the striking component, which faces the pedestal, is fixedly installed with a barb. The height adjusting component is arranged above the sleeve component and is detachably clamped into any one annular groove of the compaction instrument main rod. The sleeve component is open at a top and a bottom, and is axially provided with an axial through hole which the compaction instrument main rod can pass through. The pedestal is arranged on the lower portion of the sleeve component and an upper portion is provided with a clamping groove where the lower end of the sleeve component is clamped. The instrument has an advantage that a cushion block under a compaction instrument main rod disc pedestal is provided with the barb so that the tedious step of manual debristling can be removed.

Description

technical field [0001] The invention relates to a layered compaction instrument for static triaxial test of remolded soil. Background technique [0002] The sample preparation method of the layered compaction method is to add water to the soil to configure the required moisture content, put it into a sealed bag, and let it stand for 24 hours. Calculate the mass of wet soil required according to the dry density, divide the wet soil into several parts, pour it into the sample preparation cylinder layer by layer, and compact it with a hammer for the same number of times. After each compaction, you need to shave. The advantage of this method is that the density and moisture content of the test sample can be better controlled, and the overall structure of the soil is better. The disadvantage is that after the compaction of each layer of soil samples, manual shaving is required. [0003] Often the shavings in the test are manually operated, which is time-consuming, and the flatn...

Claims

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Application Information

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IPC IPC(8): G01N1/28
CPCG01N1/286
Inventor 孟凡丽汤鄢葛威
Owner ZHEJIANG UNIV OF TECH
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