Main stress application device for true triaxial apparatus

A technology of application device and tester, applied in the direction of measuring device, using stable tension/pressure test material strength, instrument, etc., can solve the problem of low stiffness of flexible filler, distortion of test results, enlargement of sample and pressure plate Friction and other problems, to solve the effect of excessive friction
CN104458409AInactive Publication Date: 2015-03-25POWERCHINA ZHONGNAN ENG
6 Cites 6 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
POWERCHINA ZHONGNAN ENG
Publication Date
2015-03-25
Estimated Expiration
Not applicable · inactive patent

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

The invention discloses a main stress application device for a true triaxial apparatus. The main stress application device comprises two bases arranged on two sides of a test sample respectively, loading units are arranged on the two bases, can horizontally move on the bases and can vertically extend and retract, the outer side of the loading unit on one side of the test sample contacts with a pressurizing device, the outer side of the loading unit on the other side of the test sample contacts with a counter-force support, and a stress sensor is mounted on the counter-force support. The main stress in a true tri-axis is independently applied, the main stress application device solves the problem that an experimental error is too large as frictional force is too large and soil is squeezed into a gap when the main stress is applied in an overlapping manner by a pressurizing plate in the prior art, and experimental conditions for further analyzing soil mechanical properties in a three-dimensional stress state are created.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention relates to a principal stress applying device in a true triaxial tester. Background technique

[0002] At present, various true triaxial instruments used in indoor soil tests can be roughly classified into two categories. The three principal stresses of the first type of true triaxial instrument are not completely independently applied, and the large and medium principal stresses σ 1 , σ 2 is at the small principal stress σ 3 Deviatoric stress is applied on the basis of σ 1 - σ 3 , σ 2 - σ 3 As a result, it is difficult for this type of true triaxial instrument to perform such p Wait q and other special stress path tests.

[0003] The second type of true triaxial instrument can apply three principal stresses completely independently. The large, medium and small principal stresses of this type of true triaxial instrument can be freely rotated among the three directions, so various stress path tests can be carried out conv...

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