Triaxial test device of soil freeze-thaw circulation and dynamic load coupling and method thereof

A technology of freeze-thaw cycle and triaxial test, which is applied in the direction of measuring device, application of repeated force/pulsation force to test material strength, instruments, etc., to achieve high temperature control accuracy, high temperature control accuracy, and heat preservation temperature control accuracy.

Pending Publication Date: 2017-05-31
INST OF ROCK AND SOIL MECHANICS - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there are many known instruments developed to study the freeze-thaw cycle effect of soil, but most of them are static triaxial instruments after so

Method used

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  • Triaxial test device of soil freeze-thaw circulation and dynamic load coupling and method thereof
  • Triaxial test device of soil freeze-thaw circulation and dynamic load coupling and method thereof
  • Triaxial test device of soil freeze-thaw circulation and dynamic load coupling and method thereof

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Experimental program
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Embodiment Construction

[0039] Below in conjunction with accompanying drawing and embodiment describe in detail:

[0040] 1. Device

[0041] 1. Overall

[0042] Such as figure 1 , the device includes a sample unit 000, a dynamic triaxial pressure unit 100, a temperature control unit 200 and a circulating fluid supply unit 300;

[0043] Its location connection relationship is:

[0044] The sample 000 is placed inside the dynamic triaxial pressure unit 100, the temperature control unit 200 is connected with the dynamic triaxial pressure unit 100 to monitor the temperature of the confining pressure fluid, and the temperature control unit 200 is connected with the circulating fluid supply unit 300 to control the temperature of the circulating fluid, The circulating fluid supply unit 300 is connected with the dynamic triaxial pressure unit 100 to provide it with circulating fluid.

[0045] 2. Functional unit

[0046] 0) Sample unit 000

[0047] Such as figure 2 , the sample unit 000 includes a sam...

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PUM

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Abstract

The invention discloses a triaxial test device of soil with coupling of freeze-thaw circulation and dynamic load and a method thereof and relates to the test technology of strength of positive dynamic frozen-thawed soil. The device comprises a sample unit (000), a dynamic triaxial pressure unit (100), a temperature control unit (200) and a circulation liquid supply unit (300), wherein the sample unit (000) is arranged inside the dynamic triaxial pressure unit (100); the temperature control unit (200) is connected with the dynamic triaxial pressure unit (100) and is used for monitoring temperature of confining pressure liquid of the dynamic triaxial pressure unit (100; the temperature control unit (200) is also connected with the circulation liquid supply unit (300) and is used for controlling temperature of circulation liquid; the circulation liquid supply unit (300) is connected with the dynamic triaxial pressure unit (100) and is used for supplying circulation liquid to the dynamic triaxial pressure unit (100). The triaxial test device is capable of achieving freeze-thaw circulation and application of dynamic load of soil samples in the presence of load; the temperature control accuracy is high; the triaxial test device is convenient to mount and dismount.

Description

technical field [0001] The invention relates to a test technology for the dynamic strength of positively frozen-thawed soil, in particular to a triaxial test device and a method for coupling soil freeze-thaw cycle-dynamic load. Background technique [0002] There is a wide range of seasonally frozen soils in the west and northeast of my country, and the seasonally frozen soils experience at least one freeze-thaw cycle in a year. For road and embankment projects, the humidity and temperature in and around the soil structure fluctuate during winter freezing and spring thawing. Especially under the dynamic action of traffic load, the material properties of the subgrade or embankment will change greatly, seriously affecting its normal working ability, and more seriously, it may cause serious damage to the road or embankment. Therefore, it is particularly important to carry out research on soil freeze-thaw cycle-dynamic load coupling. At present, there are many known instrument...

Claims

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Application Information

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IPC IPC(8): G01N3/36
CPCG01N3/36G01N2203/0019G01N2203/0048G01N2203/0222G01N2203/0256
Inventor 姚海林鲜少华卢正汤友生岳万轩
Owner INST OF ROCK AND SOIL MECHANICS - CHINESE ACAD OF SCI
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