Soil one-dimensional consolidation, penetration and stress looseness comprehensive test apparatus and method of use thereof

A technology of stress relaxation and comprehensive testing, which is applied in soil material testing, permeability/surface area analysis, and using stable tension/compression to test material strength, etc. knot or compression test, damage to the natural structure of the soil, etc.

Inactive Publication Date: 2005-11-23
CHANGAN UNIV
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  • Abstract
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  • Claims
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Problems solved by technology

The reason why the soil consolidation coefficient does not use the theoretical formula parameter method is that the soil permeability coefficient cannot be measured accurately by conventional methods. The reason for the inaccuracy is that the penetration test is out of touch with the consolidation test, that is, the soil solid process cannot be simulated in the conventional penetration test. The stress and density state in
The application of soil consolidation theory is greatly limited due to the influence of the reliability lag of the consolidation coefficient test method and test results.
[0003] In addition, the conventional test method adopts the method of loading in stages, wh

Method used

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  • Soil one-dimensional consolidation, penetration and stress looseness comprehensive test apparatus and method of use thereof
  • Soil one-dimensional consolidation, penetration and stress looseness comprehensive test apparatus and method of use thereof
  • Soil one-dimensional consolidation, penetration and stress looseness comprehensive test apparatus and method of use thereof

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Embodiment Construction

[0057] Referring to the accompanying drawings, the soil one-dimensional consolidation, penetration, stress relaxation comprehensive tester includes a base 15, a pressure chamber 8 is arranged on the base 15, a piston chamber 13 is arranged in the base 15, and a piston 14 is arranged in the piston chamber 13 , there is a channel 16 on one side of the bottom of the base 15, the channel 16 communicates with the pressure vessel 17, two fixed screw rods 4 are installed on both sides of the base 15, and a reaction force beam 3 is placed on the top of the fixed screw rod 4, which together form a reaction force On the frame, the pressure chamber 8 is provided with a pressure transmission cover plate 5 , and a pressure sensor 2 is provided on the upper part of the pressure transmission cover plate 5 .

[0058] The permeable stone roof on the upper part of the pressure chamber 8 is provided with a pressure transmission cover plate 5, the side wall of the pressure chamber 8 has a layer of...

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Abstract

The invention discloses a soil one-dimensional consolidation, penetration, stressing relaxation combined test instrument and usage, which posits punch inside a punch cavity at the bottom of pressure container. It can do consolidation and compression to the same soil sample K0, it also can do soil sample penetration test and stressing relaxation test directly and simultaneously. It can test the soil sample's value of coefficient of static lateral pressure K0 and the process of pore water pressure followed by time. The test instrument and method can arrange soil's consolidation characteristic parameter by test outcome and using theoretical formula penetration method. It can do soil's theological behavior analysis by the outcome of stressing relaxation test.

Description

technical field [0001] The invention belongs to the field of civil engineering, in particular to a soil K 0 (One-dimensional) Consolidation, penetration, stress relaxation comprehensive test equipment and its application method. Background technique [0002] As far as the present is concerned, although the conventional consolidation or compression test is simple and has mature experience in use, its results can meet the general requirements, and it is still widely used as the main test method. However, conventional consolidation or compression tests cannot directly test the static lateral pressure coefficient K of the deformation process of soil samples. 0 , especially after loading, the static lateral pressure coefficient K of the soil sample during deformation 0 It is constantly changing and cannot be reflected in conventional one-dimensional consolidation or compression tests. On the other hand, the disadvantage of the conventional soil sample consolidation test is tha...

Claims

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Application Information

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IPC IPC(8): G01N33/24
Inventor 刘保健谢永利李又云
Owner CHANGAN UNIV
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