Electroosmosis-vacuum-loading combined consolidometer

A consolidation instrument and vacuum technology, applied in the field of geotechnical engineering, can solve problems such as complex structure, unsuitable for popularization and application, and inability to ensure vertical constant pressure applied to soil samples.

Inactive Publication Date: 2013-08-14
HOHAI UNIV
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

The first two cannot simultaneously consider the combined effect of electroosmosis-vacuum-loading, and the lever loading method cannot guarantee to apply a constant vertical pressure to the soil sample; the latter has a complex structure, high c

Method used

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  • Electroosmosis-vacuum-loading combined consolidometer
  • Electroosmosis-vacuum-loading combined consolidometer
  • Electroosmosis-vacuum-loading combined consolidometer

Examples

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Embodiment Construction

[0018] Further description below in conjunction with accompanying drawings.

[0019] Such as figure 1 As shown, the combined electroosmosis-vacuum-loading consolidation instrument includes a consolidation container 1, a DC power supply 10, a loading system, a vacuum system and a measuring system. The loading system adopts cylinder loading, including test bench 2, loading frame 3, loading cylinder 5, air compressor 4, pressure reducing valve 6, pressure gauge 7, loading steel ball 8 and loading pad 9. The DC power supply 5 is connected to the cathode drainage pipe 26 and the anode 27 respectively through wires and wire conduits. Vacuum system is made up of vacuum pump 12, steam-water separator bottle 14 and vacuum gauge 13. The measurement system includes a pore pressure sensor 28 , a pore pressure display 18 , a potential measuring probe 29 , a multimeter 15 , a dial gauge 21 and a graduated cylinder 17 .

[0020] Such as figure 2 As shown, the consolidation container 1 i...

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Abstract

The invention provides an electroosmosis-vacuum-loading combined consolidometer which comprises a consolidation container, a direct current power supply, a loading system, a vacuum system and a measuring system, wherein an annular circular groove with certain depth is arranged in an upper cover of the consolidation container; a wire guide pipe is arranged at the top of the annular groove; a stainless steel tube with a hole is used as a cathode draining pipe, and is wrapped by geotechnical cloth so as to achieve a back filtering function; a stainless steel bar or carbon rod is used as an anode, and is connected in series by a wire; the draining pipe is arranged at the bottom of the consolidation container, and is connected with a steam-water separating bottle or measuring cylinder through a connecting pipe; and the loading system adopts cylinder-type loading. The electroosmosis-vacuum-loading combined consolidometer is simple to operate, can carry out electroosmosis-vacuum-loading combined or two combined or independent laboratory test research on various soil samples, can be used for monitoring the variation of soil property parameters such as pore pressure, electric potential and settling volume in a consolidation process of the soil samples in real time so as to quantitatively analyze a consolidation effect and provide reliable design parameters for practical engineering application.

Description

technical field [0001] The invention relates to a rapid solidification test device for soft clay, which belongs to the field of geotechnical engineering in civil engineering. Background technique [0002] With the rapid development of the national economy, the infrastructure along the coast is also being continuously improved. At the same time, a large number of soft clay foundations emerging urgently need to be dealt with. The method of surcharge preloading and vacuum preloading is the commonly used soft soil foundation reinforcement method at present. However, for soft clay with high clay content and low permeability, surcharge and vacuum preloading drainage reinforcement effect is not good. In recent years, some people have combined the electroosmosis method with the traditional drainage consolidation method in the reinforcement of soft clay foundations, and achieved good results. [0003] The electroosmosis method is to insert electrodes into the soil, and after applyi...

Claims

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Application Information

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IPC IPC(8): G01N33/24
Inventor 周亚东王保田祁生旺潘冬庆
Owner HOHAI UNIV
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