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

Device and method for measuring actual triaxial creep of geotechnical engineering test specimen

A geotechnical engineering and true triaxial technology, applied in the field of devices for measuring true triaxial creep of geotechnical engineering test blocks, can solve the problem of inability to accurately reflect the real stress and creep behavior of rock and soil, and the loss of triaxial creep Accuracy, lack of geotechnical research and other problems, to achieve the effect of long test period, slow deformation, and guaranteed stability

Inactive Publication Date: 2013-07-24
SHANDONG UNIV
View PDF5 Cites 19 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In the past, creep tests in geotechnical engineering often stayed on uniaxial and pseudo-triaxial tests. The uniaxial test ignored the influence of the confining pressure of the test block, and the pseudo-triaxial test ignored the inequalities of the pressure in each direction of the test block. These cannot accurately reflect the real force and creep behavior of rock and soil under actual conditions.
True triaxial creep test instruments for rock and soil at home and abroad are very rare, with very complex structures, relatively large scale, cumbersome operations, and expensive prices, and are only used in high-strength creep tests. For triaxial creep tests under low-strength conditions often loses accuracy
At present, the research on the creep phenomenon of rock and soil under low strength conditions is relatively lacking.

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
  • Device and method for measuring actual triaxial creep of geotechnical engineering test specimen
  • Device and method for measuring actual triaxial creep of geotechnical engineering test specimen
  • Device and method for measuring actual triaxial creep of geotechnical engineering test specimen

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0045] The present invention will be further described below in conjunction with the accompanying drawings and embodiments. It should be noted that the following description is only for explaining the present invention and not limiting its content.

[0046]The present invention includes a support structure, and the inside of the support structure slides and overlaps four confining pressure plates and upper and lower pressure plates to form a closed cavity for wrapping the test block; the confining pressure plates include two long confining pressure plates 13 and two short confining pressure plates 14. The upper and lower pressure plates are rectangular top steel plates 11 and bottom steel plates 14. Two "L" shaped long enclosure pressure plates 13 bent outwards are set up on the adjacent two sides of the bottom steel plate 14, and the remaining two Two "L" shaped short enclosures 12 bent outwards are set up on the side, and the bottom of the short enclosures 12 is placed on the...

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 device for measuring actual triaxial creep of a geotechnical engineering test specimen. The device comprises a support structure, and also comprises four confining pressure plates, an upper compression plate and a lower compression plate so as to form a closed cavity for wrapping a test specimen, wherein the confining pressure plates comprise two long confining pressure plates and two short confining pressure plats, the upper compression plate and the lower compression plate are a rectangular top steel plate and a rectangular bottom steel plate, the two outwards-bent L-shaped long confining pressure plates are overlapped on two adjacent side surfaces of the bottom steel plate, the two outwards-bent L-shaped short confining pressure plates are overlapped on the other two side surfaces of the bottom steel plate, the bottom ends of the short of the bottom steel plate plates are arranged on the bottom steel plate, the top steel plate is overlapped at the top ends of the long confining pressure plates, the top steel plate is clung to the inner side surfaces of the two short confining pressure plates, pressure sensors corresponding to the four confining pressure plates and the upper compression plate and the lower compression plate are vertically arranged inside the support structure, and grating rulers are arranged on the pressure sensors. The invention also provides a method for measuring the actual triaxial creep of the geotechnical engineering test specimen by using the device.

Description

technical field [0001] The invention relates to a device and method for measuring the true triaxial creep of a geotechnical engineering test block. Background technique [0002] Creep refers to the phenomenon that the strain of a solid material increases with time under the condition of keeping the stress constant. It is different from plastic deformation, which usually occurs after the stress exceeds the elastic limit, and creep can occur when the stress is less than the elastic limit, as long as the stress is applied for a long time. [0003] Creep phenomenon is very common in geotechnical engineering, and many geotechnical engineering disasters are also closely related to rock and soil creep, such as landslides, landslides, foundation settlements, etc. Important guarantee. [0004] In the past, creep tests in geotechnical engineering often stayed on uniaxial and pseudo-triaxial tests. The uniaxial test ignored the influence of the confining pressure of the test block, a...

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): G01N3/28
Inventor 李利平雷霆张乾青石少帅周宗青李术才王庆瀚陈云娟
Owner SHANDONG 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