Complete plane strain similar test system capable of applying gradient strain

A plane strain and gradient stress technology, which is applied in the direction of applying stable tension/pressure to test the strength of materials, can solve the problems of inconsistent stress state, non-compliance with plane strain deformation conditions, and no limit to the strain in the vertical cross-section direction. The results are true, reliable, scientific and reasonable to guide the effect of design and construction

Inactive Publication Date: 2014-04-30
HENAN POLYTECHNIC UNIV
View PDF5 Cites 6 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, all similar test devices at present are not complete plane strain test devices, because the strain in the vertical cross-sectional direction is not limited, and they are essentially plane stress test devices, and some baffles are used to limit the strain in the vertical cross-sectional direction. There is a large friction between the plate and the model, which constrains the strain of the ...

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
  • Complete plane strain similar test system capable of applying gradient strain
  • Complete plane strain similar test system capable of applying gradient strain
  • Complete plane strain similar test system capable of applying gradient strain

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0011] Hereinafter, the invention will now be described more fully with reference to the accompanying drawings, in which various embodiments are shown. However, this invention may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.

[0012] Hereinafter, exemplary embodiments of the present invention will be described in more detail with reference to the accompanying drawings.

[0013] Reference attached Figure 1-6 , Combination module 1 is composed of part 1, part 2, part 3, part 4, part 5, part 6, part 7, part 8; detachable combination module 2 is composed of part 1, part 2, part 4, part 5, part 6 , component 7, component 8, component 9 and component 10; combined module 3 is composed of combined module 1 and component 11.

[0014] The whole tes...

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 to a complete plane strain similar test system capable of applying gradient strain. The whole system comprises a plurality of combined modules, a detachable combined module, a horizontal gradient strain servo control system, a vertical strain servo control system, a connecting lifting control system and a data acquisition control system. Due to the adoption of the system, a more practical test condition is provided for an urban underground construction and a mining engineering; the test system can slide freely along with a rock via the modules of two sides and limits the movement in the direction vertical to a model, so as to realize the plane strain similar test. The upper pressure under a deep geological condition can be compensated by the vertical strain servo control system, and the horizontal gradient strain is applied by the horizontal gradient strain servo control system. The test condition of the test system can be well consistent with the actual engineering condition, the results of the test are more real and more reliable, and can guide the design and construction scientifically and reasonably, and therefore a scientific test condition is provided for the stability research of geotechnical engineering.

Description

technical field [0001] The invention relates to coal mines, (non-)metal mines, urban subway projects, railway and expressway tunnel projects, slope projects, especially deep mining coal mines and other mines. According to the International Classification of Inventions (IPC), it belongs to the Department of Buildings, the Mining Division of Soil or Rock Strata, the test system for geotechnical engineering mining such as mines, tunnels and slopes, the stability of confining pressure of slopes and tunnels, and the safety of urban subway construction. It is a technical field of research on the stability of mining roadways in deep mines, and the law of mining roof collapse and disasters. Background technique [0002] For the safe and efficient mining of mines and the research on the roof collapse law and disaster mechanism of ore body mining, in order to ensure the safety of important infrastructure and municipal engineering, and to provide scientific design and construction basi...

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
IPC IPC(8): G01N3/08
Inventor 王云飞郑晓娟王立平崔芳王利
Owner HENAN POLYTECHNIC 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
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap