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Physical and mechanical parameter measuring device for unsaturated expansive soil

A technology for measuring devices and mechanical parameters, which is applied in the field of measuring devices for physical and mechanical parameters of unsaturated expansive soils, can solve problems such as low efficiency of measurement methods, high cost, and difficulty in analyzing the corresponding relationship of functions, and achieve fast and effective measurement, simple operation, and comprehensive Clarify the effects of physical and mechanical properties

Active Publication Date: 2020-12-04
CENT SOUTH UNIV +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Combining the existing measurement devices, there are corresponding measurement methods for each physical parameter, but the existing measurement methods have low efficiency, high cost, and it is difficult to analyze the functional correspondence between various correlation coefficients. Therefore, it is necessary to design a non- Measuring device for physical and mechanical parameters of saturated expansive soil, reducing measurement cost and improving measurement efficiency

Method used

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  • Physical and mechanical parameter measuring device for unsaturated expansive soil
  • Physical and mechanical parameter measuring device for unsaturated expansive soil
  • Physical and mechanical parameter measuring device for unsaturated expansive soil

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Embodiment Construction

[0026] The embodiments of the present invention will be described in detail below with reference to the accompanying drawings, but the present invention can be implemented in various ways defined and covered by the claims.

[0027] see Figure 1 to Figure 7 This embodiment provides a device for measuring physical and mechanical parameters of unsaturated expansive soil, including a device frame 1, three expansive soil measurement positions arranged up and down, an expansive soil conductivity measurement structure, and an expansion deformation measurement structure. in:

[0028] The device frame provides basic support for the entire measurement device. The device frame is a hollow structure with an open top. There are multiple horizontally arranged strip-shaped installation openings symmetrically on the front side wall and the rear side wall of the device frame. Each expansive soil measurement position includes a rigid permeable plate 2, an upper permeable plate 3 and a lower p...

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Abstract

The invention discloses a physical and mechanical parameter measuring device for unsaturated expansive soil. The physical and mechanical parameter measuring device comprises a device frame body, an expansive soil measuring position, a conductivity measuring structure and an expansion deformation measuring structure, the expansive soil measuring position comprises a rigid water permeable plate, anupper water permeable plate and a lower water permeable plate, a soil sample storage space is formed between the upper water permeable plate and the lower water permeable plate, and a plurality of stand columns with stress sensors are arranged between the rigid water permeable plate and the upper water permeable plate; the conductivity measuring structure adopts a parallel circuit form, and the conductivity of the expansive soil samples with different measurement positions and different water contents is calculated according to the difference of the conductivity of the expansive soil after electrification; and the expansion deformation measuring structure measures lateral deformation of the expansive soil under the condition of lateral confinement. The measuring device provided by the invention is relatively simple to operate, can quickly and effectively measure the key physical and mechanical parameters of the expansive soil body, can further analyze the correlation function relationship of each parameter under the condition of the same water content, and is beneficial to comprehensively defining the physical and mechanical properties of the expansive soil.

Description

technical field [0001] The invention relates to the technical field of measuring equipment for civil engineering and geotechnical engineering, in particular to a device for measuring physical and mechanical parameters of unsaturated expansive soil. Background technique [0002] Expansive soil is a special clay containing more strongly hydrophilic minerals. Due to the existence of these strongly hydrophilic mineral components, expansive soil shows special engineering properties. During the dry-wet cycle, the presence of strongly hydrophilic minerals leads to the strong water absorption of expansive soil. Due to a large amount of water absorbed, the volume expands, and a large amount of water is lost, the volume shrinks, and the expansive soil shows expansion and contraction. The physical and mechanical properties of expansive soil are the basis for engineering use of expansive soil, such as expansive force, expansion deformation, electrical conductivity, water content, free ...

Claims

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Application Information

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IPC IPC(8): G01N33/24
CPCG01N33/24
Inventor 张震林宇亮杨果林徐永福
Owner CENT SOUTH UNIV
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