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A multifunctional unsaturated soil consolidation instrument and testing method

A consolidation instrument, multi-functional technology, applied in the direction of applying stable tension/compression to test the strength of materials, etc., can solve the lack of accurate and effective unsaturated soil testing instruments, the inability to realize the lateral pressure of unsaturated soil, and the limitation of unsaturated soil Mechanics development and other issues to achieve the effect of rich functions, compact structure, and reduced preload

Inactive Publication Date: 2017-01-04
DALIAN UNIV OF TECH
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AI Technical Summary

Problems solved by technology

Looking back on the development of unsaturated soil mechanics, it can be said that the lack of accurate and effective unsaturated soil testing instruments is an important factor limiting the development of unsaturated soil mechanics
[0005] Most of the existing unsaturated soil consolidation instruments can only complete the consolidation test of controlling the suction force alone, and cannot carry out the K0 consolidation test of controlling the suction force, and cannot realize the lateral pressure σ of the unsaturated soil 3 The measurement and test verification of the static side pressure coefficient

Method used

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  • A multifunctional unsaturated soil consolidation instrument and testing method
  • A multifunctional unsaturated soil consolidation instrument and testing method

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Embodiment Construction

[0026] The specific implementation manner of the present invention will be described in detail in conjunction with the accompanying drawings and technical solutions.

[0027] The multifunctional unsaturated soil consolidation instrument is mainly composed of a consolidation instrument loading platform 35, a weight tray 37, a weight 38, a lever 36, a counterweight 33, a loading connection block 34, a connecting rod 32, an air pressure chamber and a consolidation instrument. component composition;

[0028] The loading platform 35 is a rectangular table body structure, and is located on another larger lower table body table, the lower table body table is fixed with a lever support, and the lever 36 is fixed on the lever support; one end of the lever 36 is fixed with a counterweight 33, and the other One end is hinged to the weight tray 37, and the loading connection block 34 is an axisymmetric member. The center of the loading connection block 34 is fixed on the side of the weigh...

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Abstract

A multifunctional unsaturated soil consolidation instrument and a testing method belong to the field of geotechnical testing instruments. The built-in methods of thrust bearings, linear bearings, self-aligning parts and axial pressure sensors are used on the loading rod of the test platform of the cementation instrument to eliminate the influence of friction during loading, and the design of rotating rigid connection components reduces the impact on the sample. The design of the self-aligning component solves the problem of eccentricity of the loading rod and the sample due to processing and installation. At the same time, the optimized design of the structure enables it to adapt to various loading platforms, ensuring that it can be tested on the existing saturated soil consolidation instrument, and can also be tested on the triaxial compression test instrument.

Description

technical field [0001] The invention relates to a multifunctional unsaturated soil consolidation instrument, which belongs to the field of geotechnical testing instruments, and relates to a consolidation test of unsaturated soil, in particular to a lateral force test for controlling suction of unsaturated soil. Background technique [0002] Before planning and construction of infrastructure in the geotechnical industry, it is necessary to test the mechanical properties of the rock and soil involved in the building foundation. The test is usually carried out in an indoor laboratory. The test of the mechanical properties of the soil is called a geotechnical test. The main tool used is the geotechnical testing instrument. Unsaturated soil testing equipment refers to the equipment used to test the mechanical properties of unsaturated soil. [0003] At present, the development of unsaturated soil testing equipment is not perfect enough, but it is very important to study the mech...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N3/14
Inventor 邵龙潭高君生郭晓霞
Owner DALIAN UNIV OF TECH
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