Dry and wet circulation device, and dry and wet circulation method based on device

A dry-wet cycle and storage technology, applied in the field of geotechnical engineering, can solve the problems of long time required for humidification and drying, multiple dry-wet cycles of soil samples, and difficulty in quantitatively increasing water loss and restoring the stress state. , to achieve the effect of improving reliability

Pending Publication Date: 2018-10-12
INST OF ROCK AND SOIL MECHANICS - CHINESE ACAD OF SCI
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Problems solved by technology

The method of using matrix suction control is more accurate, but it takes a long time to humidify and dry, and it is difficult to perform dry-wet cycles on multiple soil samples at the same time
Non-matrix suction control methods generally use water spraying to humidify and air-dry to lose water. It is difficult to achieve quantitative increase and loss of water and restore the stressed state at the same time.

Method used

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  • Dry and wet circulation device, and dry and wet circulation method based on device
  • Dry and wet circulation device, and dry and wet circulation method based on device
  • Dry and wet circulation device, and dry and wet circulation method based on device

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Embodiment Construction

[0033] The embodiment of the present application provides a dry-wet cycle device and a dry-wet cycle method based on the device, so as to improve the reliability of test simulation of water loss and stress.

[0034] In order to better understand the above technical solutions, the above technical solutions will be described in detail below in conjunction with the accompanying drawings and specific implementation methods. It should be understood that the embodiments of the present invention and the specific features in the embodiments are detailed descriptions of the technical solutions of the present application. , rather than limiting the technical solutions of the present application, the embodiments of the present application and the technical features in the embodiments can be combined without conflict.

[0035] see figure 1 , a dry-wet cycle device, including: a first axial force conduction cap 1, a second axial force conduction cap 2, a sample holding cylinder 3, a force ...

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Abstract

The invention belongs to the technical field of geotechnical engineering, and discloses a dry and wet circulation device. The dry and wet circulation device comprises a first axial force transmissioncap, a second axial force transmission cap, a sample accommodating cylinder, force applying springs and water-permeable subplates; the first axial force transmission cap and the second axial force transmission cap are embedded at two ends of the sample accommodating cylinder, and a sample is compacted in the sample accommodating cylinder; two ends of the force applying springs are respectively connected to the first axial force transmission g cap and the second axial force transmission cap to axially tension the first axial force transmission cap and the second axial force transmission cap inorder to apply an axial pressure to the sample; and the quantity of the water-permeable subplates is two, and the water-permeable subplates are respectively arranged at two ends of the sample and between the first axial force transmission cap and the second axial force transmission cap. The dry and wet circulation device is a device capable of reliably simulating the flood and dry state of soil.

Description

technical field [0001] The invention relates to the technical field of geotechnical engineering, in particular to a dry-wet cycle device and a dry-wet cycle method based on the device. Background technique [0002] Under natural conditions, due to the effects of atmospheric precipitation and evaporation, rising and falling groundwater levels, etc., the moisture content of subgrade soil is in a periodical dynamic change for a long time. Studies have shown that the dry-wet cycle changes the mechanical properties of soil materials. In order to study the change law of soil mechanical properties, it is necessary to simulate its stress state and water content change under real conditions. [0003] At present, the research methods on the dry-wet cycle process of soil are mainly divided into two methods: matrix suction control and non-matrix suction control. The method of using matrix suction control is more accurate, but it takes a long time to humidify and dry, and it is difficu...

Claims

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Application Information

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IPC IPC(8): G01N33/24
CPCG01N33/24
Inventor 卢正唐楚轩姚海林方燃鲜少华佘建波
Owner INST OF ROCK AND SOIL MECHANICS - CHINESE ACAD OF SCI
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