Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

A method for testing the pull-out friction of geotextiles for rock and soil

A technology of geotextiles, test methods, applied in the direction of testing material strength using applied stable shear force, testing material strength using applied stable tension/compression, testing abrasion resistance, etc.

Inactive Publication Date: 2016-02-17
INST OF GEOLOGY & GEOPHYSICS CHINESE ACAD OF SCI
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a geotextile anti-drawing friction test method for rock and soil, which solves the problem of the anti-drawing characteristics and anti-friction shear characteristics of geotextiles in porous media including sand, silt or cohesive soil. Trial Test Questions

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 method for testing the pull-out friction of geotextiles for rock and soil
  • A method for testing the pull-out friction of geotextiles for rock and soil
  • A method for testing the pull-out friction of geotextiles for rock and soil

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0027] (1) The steps of using the device for the pull-out test of geotextiles are as follows:

[0028] ① Install the lower sample box 13 in the lower base 14, put the lower permeable stone 18 into the lower sample box 13, lay filter paper on the surface of the lower permeable stone 18, lay the lower sample 26 on the filter paper, and lay filter paper on the surface of the lower sample 26 , the upper permeable stone 11 is installed on the filter paper, the top cover 8 is installed on the upper permeable stone 11, and the top cover 8 is connected to the pressurized shaft 10;

[0029] ② Apply a weight 25 to provide a consolidation pressure of 100kPa for the lower sample 26, so that the lower sample 26 is consolidated, exhaust and drain through the upper drainage hole 7 and the lower drainage hole 17, and the indication value of the displacement meter 31 to be consolidated is less than Or equal to 0.01mm / h and when the surface layer of the lower sample 26 after consolidation excee...

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 provides an anti-drawing and anti-friction testing method for a geotextile of a rock-soil body. The method is characterized by adopting a testing device. The device comprises a drawing stepping motor (1), a drawing force measuring ring (2), an upper sample box (6), a pressurizing framework (9), a lower sample box (13), a lower base (14), a shearing force measuring ring (15), a shearing stepping motor (16), a pressurizing lever (23) and a weight (25). With the adoption of the device, an anti-drawing test and an anti-friction shearing test of the geotextile can be carried out and a force and deformation amount F-L curve is drawn; when an indication value of a drawing displacement meter (29) or a shearing displacement meter (28) is rebounded, the maximum value of the anti-drawing or anti-friction shearing strength of the geotextile (4) can be obtained. The method is simple and practical and is flexible to operate; the method can be used for test and experiment researches on anti-drawing and anti-shearing strength properties of the various geotextiles in various porous media.

Description

technical field [0001] The invention relates to a geotechnical test method, which belongs to the technical field of civil engineering (geotechnical) engineering. Background technique [0002] Geotextiles are widely used in reinforced soil, which can provide balanced stress for rock and soil and form a composite structural system. With the extensive development of geotechnical engineering construction in our country, the reinforced soil technology has been popularized rapidly, and the technical application far exceeds the theoretical research. How to measure the tensile strength and shear strength of geotextiles in rock and soil, so far there is no suitable experimental equipment for measurement. At present, more indicators such as tensile strength and puncture resistance of geotextiles are used. Design and construction have not yet formed a unified strength test specification and operation process. The application is to invent a test device, which is used to test the tensi...

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): G01N3/14G01N3/24G01N3/56
Inventor 李志清胡瑞林
Owner INST OF GEOLOGY & GEOPHYSICS CHINESE ACAD OF SCI
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com