Eureka AIR delivers breakthrough ideas for toughest innovation challenges, trusted by R&D personnel around the world.

A sample preparation device and sample preparation method for bidirectional layered compaction of remolded soil

A technology for reshaping soil and soil samples, which is applied in the directions of measuring devices, sampling, and analyzing materials, can solve the problems of uneven initial structure distribution, poor fitting of test curves, and uneven distribution in the vertical direction, so as to reduce the uneven distribution of samples Uniform phenomenon, improve sample preparation efficiency, improve the effect of sample preparation accuracy

Active Publication Date: 2021-06-15
HOHAI UNIV
View PDF13 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These two methods both have uneven structure of each layer of the sample, different density indicators of each layer, discrete test data, and uncertain results due to multi-layer unidirectional vertical compaction sample preparation or compaction sample preparation. And problems such as poor fitting of related test curves
[0003] Two-way compaction is a better way of thinking. For example, patent CN200910063449.1 reports a flat-push two-way sample preparation instrument. This invention uses horizontal and two-way simultaneous application of loads. By applying horizontal and two-way loads, each layer of the sample can be as compact as possible. The density is consistent, but with the horizontal sample preparation method, there will be uneven distribution of the loose soil sample in the vertical direction when it is loaded into the sample preparation cylinder, which brings the error hidden danger of uneven distribution of the initial structure

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A sample preparation device and sample preparation method for bidirectional layered compaction of remolded soil
  • A sample preparation device and sample preparation method for bidirectional layered compaction of remolded soil
  • A sample preparation device and sample preparation method for bidirectional layered compaction of remolded soil

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0042] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific preferred embodiments.

[0043]In the description of the present invention, it should be understood that the orientations or positional relationships indicated by the terms "left side", "right side", "upper", "lower" are based on the orientations or positional relationships shown in the accompanying drawings, and are only For the purpose of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, "first", "second" and the like do not represent components importance, and therefore should not be construed as limiting the invention. The specific dimensions used in this embodiment are only for illustrating the technical solution, and do not limit the protection scope of the present inv...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a remolding soil two-way layered compaction sample preparation device and a sample preparation method, comprising a sample preparation cylinder and two sets of briquetting components; the sample preparation cylinder includes a left split mold, a right split mold, and an upper fixing ring and the lower fixing ring; each set of briquetting components includes briquetting blocks, and the outer diameter of each briquetting block is equal to the inner diameter of the sample preparation cylinder; the heights of each briquetting block are: h 环 , (h 环 + h 土 ), (h 环 +2h 土 ),..., among them, h 环 is the height of the upper or lower fixing ring, h 土 Reshape the soil sample height for a single layer. In the present invention, a cylindrical hollow stainless steel block with a prefabricated height is used for sample compaction, and the compaction height can be accurately controlled during the compaction process, which avoids the phenomenon of over smashing that may occur in the conventional compaction process, and improves the precision of sample preparation at the same time It also improves the efficiency of sample preparation. The whole sample preparation device has simple structure, low manufacturing cost, simple and clear sample preparation process, and convenient and fast operation.

Description

technical field [0001] The invention relates to the technical field of geotechnical tests, in particular to a sample preparation device and a sample preparation method for bidirectional layered compaction of remolded soil. Background technique [0002] In the field of geomechanics, the preparation of remolded soil samples is widely used in laboratory experiments. At present, the commonly used reshaping soil geotechnical test sample preparation equipment usually adopts a sample preparation device with one-way vertical force and multi-layer compaction method, or a sample compression mold of a certain specification. These two methods both have uneven structure of each layer of the sample, different density indicators of each layer, discrete test data, and uncertain results due to multi-layer unidirectional vertical compaction sample preparation or compaction sample preparation. And problems such as poor fitting of related test curves. [0003] Two-way compaction is a better w...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): G01N1/28
CPCG01N1/286
Inventor 鲁洋张勇敢刘斯宏张呈斌俞悦叶小川
Owner HOHAI UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Eureka Blog
Learn More
PatSnap group products