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

Method for obtaining mechanical behavior of pulloutof planar geosynthetics-soil interface

A flat, interface technology, used in scientific instruments, using stable shear force to test material strength, using stable tension/pressure to test material strength, etc., can solve the problems of unstable monitoring, difficult monitoring, and high cost , to save raw materials, improve product quality, and achieve good results

Active Publication Date: 2019-07-23
TONGJI UNIV
View PDF6 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The conventional pull-out test is easy to obtain the pull-out load-displacement curve, but to obtain the shear stress, axial force, and internal displacement distribution and evolution law, it is necessary to install a large number of monitoring components such as strain gauges and flexible displacement meters. Complete data can only be obtained by doing several sets of pull-out tests under different overlying load conditions. At the same time, this test has the disadvantages of long cycle, high cost, difficult monitoring, and unstable monitoring.

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
  • Method for obtaining mechanical behavior of pulloutof planar geosynthetics-soil interface
  • Method for obtaining mechanical behavior of pulloutof planar geosynthetics-soil interface
  • Method for obtaining mechanical behavior of pulloutof planar geosynthetics-soil interface

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0055]This example uses the geotextile pull-out test conducted by Perkins and Cuelho in 1999 for verification, and all test data are taken from that test. First, conduct a pull-out test on the reinforced soil structure you want to explore (set the overlying load to 15kPa), and the schematic diagram of the test is as follows figure 1 , 2 According to the experimental data in the literature, the obtained load-displacement curve, the property parameters of the soil and the planar reinforcement are recorded. As shown in the table below:

[0056] Table 1: Perkins and Cuelho pull-off test parameters

[0057]

[0058] like Figure 5 As shown, the asterisk point indicates the load-displacement data obtained when the overlying load is 15kPa, three control points are taken at the end of the first stage of the load-displacement curve, the end of the second stage and the highest point of the curve: A (2.3mm ,6.9kN / m), B(11.5mm, 15.9kN / m), C(25.6mm, 19.8kN / m), substitute the values ...

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 relates tomethod for obtaining mechanical behavior of pulloutof a planar geosynthetics-soil interface. The method for obtaining mechanical behavior of pulloutof the planar geosynthetics-soil interface comprises the steps that (1) under a certain overburden pressure, the geosynthetics-soil interface of reinforced soil structure is subjected to a pullout test to obtain load-displacement curve data; (2) three feature points are taken in the obtained load-displacement curve, and the values of the three points are put into a calculation formula to determine control parameters; (3) thecontrol parameters are put into a model calculation formula to determinemechanical behavior curves of each stage such as the load-displacement curve, the shearing stress distribution, and the internal displacement distribution, and a complete mechanical behavior characteristic curve is obtained; (4) under other overburden pressures, the control parameters of the step (2) are converted and put intothe step (3) again to obtain various mechanical behavior characteristic curves under other overburden pressures. Compared with the prior art, the method for obtaining mechanical behavior of pulloutofthe planar geosynthetics-soil interface determinesrequired pullout parameters through implementation of only one pullout test, and a good geosynthetics-soil interface pullout mechanical behavior canbe obtained.

Description

technical field [0001] The invention relates to the technical field of reinforced soil structures, in particular to a method for obtaining the pulling-out mechanical behavior of a planar reinforcement-soil interface. Background technique [0002] Reinforced soil technology is widely used in civil engineering construction. As an important reinforcing material, geosynthetics are widely used in reinforced soil engineering practice due to their superior engineering properties, and the research on the interface effect of geosynthetics reinforced soil has gradually become the focus of geotechnical engineering research. a hot spot. Scholars at home and abroad have done a lot of research on the interaction mechanism of reinforced soil-reinforced soil interface. However, due to the many factors affecting the characteristics of reinforced soil-reinforced soil interface, the interface mechanism is very complicated, especially for reinforced coarse-grained soil. The research on the me...

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 Applications(China)
IPC IPC(8): G01N3/24G01N3/08
CPCG01N3/08G01N3/24G01N2203/0025
Inventor 任非凡刘铨黄强强徐超
Owner TONGJI UNIV
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