Unlock instant, AI-driven research and patent intelligence for your innovation.

Temperature-control pressure chamber system for unsaturated soil tri-axial apparatus

A temperature control system and pressure chamber technology, applied in instruments, using stable tension/pressure to test the strength of materials, scientific instruments, etc., can solve problems such as inability to meet and effectively control temperature, to prevent heat loss, guarantee Uniform, data-accurate results

Inactive Publication Date: 2012-12-26
BEIJING JIAOTONG UNIV
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the conventional GDS unsaturated soil triaxial instrument cannot effectively control the temperature during the experiment, and cannot meet the requirements of unsaturated soil experiments considering the influence of temperature

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
  • Temperature-control pressure chamber system for unsaturated soil tri-axial apparatus
  • Temperature-control pressure chamber system for unsaturated soil tri-axial apparatus

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Such as figure 1 As shown, the temperature-controlled unsaturated soil triaxial pressure chamber system of the present invention includes a loading platform, a pressure cover and a temperature control system;

[0027] The loading platform includes a platform 14, a lifting platform 15, a base 17, two poles 19, a beam 22, an axial load sensor 24, a bracket 25 and an axial displacement sensor 26; the lower ends of the two poles 19 are connected to the platform 14 is fixedly connected, the upper end passes through the two ends of the beam 22, and is fixedly connected by the fixing bolt 23; the upper end of the axial load sensor 24 is connected with the midpoint of the beam, and the lower end is in contact with the piston rod 18; the lower end of the axial displacement sensor 26 is connected with the top cover 2 phase contact, the upper end is connected with the piston rod 18 through the bracket 25;

[0028] The pressure cover includes a top cover 2, an outer wall 4 and...

Embodiment 2

[0039] The difference between this embodiment and Embodiment 1 is that when performing the unsaturated soil-water characteristic curve test, in order to shorten the test time while ensuring the same accuracy and test results, the axial piston rod 18 and the plexiglass sample A riser block 29 is arranged between the caps 6, so that a sample with a smaller height can be used. The heightening block 29 is composed of two cylinders with different diameters, the top of which is in contact with the axial piston rod 18, and the semicircular groove on the top is equal to the radius of the semicircular protrusion on the top of the axial piston rod 18. And fit; the bottom is in contact with the plexiglass sample cap 6, and the diameters of the two are equal.

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 temperature-control pressure chamber system for an unsaturated soil tri-axial apparatus, and the system comprises a loading platform and a pressure cover, wherein the pressure cover is fixedly arranged on the loading platform; the pressure chamber system further comprises a temperature control system which is connected to the pressure cover; the pressure cover comprises a top cover and an outer wall; the outer wall has a sandwich structure; the temperature control system comprises an electric heating plate, a lead, a temperature controller and a temperature sensor; the electric heating plate is arranged in the sandwich layer of the outer wall and is connected to the temperature controller through the lead; the temperature sensor is fixed on the top cover of the pressure cover through a fixing nut; and one end of the temperature sensor is arranged in the pressure cover while the other end is connected to the temperature controller through the lead. The system is used for realizing the precise control and measurement for the test temperature on the basis of the conventional unsaturated soil tri-axial apparatus and is used for carrying on various unsaturated soil tests at different temperatures, thereby promoting the universality of the ordinary unsaturated soil tri-axial apparatus. Besides, the temperature control is automated and the measured data is accurate.

Description

technical field [0001] The invention relates to an unsaturated soil triaxial instrument pressure chamber system capable of effectively controlling the experimental temperature, belonging to the technical field of civil engineering geotechnical experimental instruments. Background technique [0002] Most of the existing studies on the basic properties of unsaturated soils are carried out at room temperature, ignoring the influence of temperature. However, the soil in nature is always in a specific natural environment, and its basic properties will vary greatly with the moisture and temperature conditions. The basic properties of the soil obtained by ignoring the influence of surrounding environmental factors will be It is inaccurate and cannot meet the needs of actual engineering. Although due to the development of permafrost engineering, the research considering the influence of low temperature on soil properties has achieved certain results, but the research on the influen...

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): G01N3/18G01N3/02
Inventor 蔡国庆赵成刚刘艳李舰
Owner BEIJING JIAOTONG UNIV