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Soft soil thermal consolidation model test device and method

A model test device and thermal consolidation technology, which is applied in the direction of soil material testing, measuring devices, material inspection products, etc., to achieve the effects of fast efficiency, improved consolidation strength, and improved thermal consolidation effect

Active Publication Date: 2021-06-11
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] At present, most of the studies on the thermal consolidation effect of soft clay are based on unit tests, and there are few studies on the thermal consolidation effect of soft clay at the model scale. Therefore, the establishment of an indoor model test device for the study of the thermal consolidation effect of soft clay can be Successfully carry out indoor model test research, which is more reliable and accurate than unit test, and has important engineering significance

Method used

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  • Soft soil thermal consolidation model test device and method
  • Soft soil thermal consolidation model test device and method
  • Soft soil thermal consolidation model test device and method

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Embodiment 1

[0045] see figure 1 , a soft soil thermal consolidation model test device, comprising a gravel drainage pit 1, a geotextile 2 is pasted on the inner end wall of the gravel drainage pit 1, a porous magnetic plate 3 is placed on the upper end of the gravel drainage pit 1, and a porous magnetic The soft soil 4 to be tested is filled between the plate 3 and the geotextile 2 , and a plurality of uniformly distributed consolidation main balls 5 are pre-embedded in the soft soil 4 to be tested.

[0046] A heater is installed in the heating inner core 53, and a temperature sensor and a pore pressure sensor are pre-embedded in the soft soil 4 to be tested, and the heater, the temperature sensor and the pore pressure sensor are all wirelessly connected to a controller.

[0047] see Figure 2-3 , the consolidated main ball 5 includes a magnetic shielding spherical shell 51, a trigger layer 52 and a heating inner core 53, and the magnetic shielding spherical shell 51, the triggering laye...

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Abstract

The invention discloses a soft soil thermal consolidation model test device and a soft soil thermal consolidation model test method, and belongs to the technical field related to geotechnical engineering and foundations. A consolidation main ball is innovatively introduced, is pre-buried in to-be-tested soft soil, can autonomously absorb moisture and then triggers a gas generation reaction; the heat conduction graphite powder and the consolidation auxiliary balls enter the to-be-tested soft soil, the heat conduction graphite powder is diffused along pores of the to-be-tested soft soil so as to comprehensively and uniformly heat the to-be-tested soft soil, the consolidation auxiliary balls migrate to the geotechnical cloth under the action of a magnetic field, and in the migration process, the consolidation auxiliary balls not only can accelerate drainage of water, but also can release quicklime powder when uneven extrusion is carried out, the quicklime powder reacts with residual moisture of the to-be-tested soft soil to be consumed, heat is provided for assisting thermal consolidation, meanwhile, reaction products can reinforce the to-be-tested soft soil to improve the consolidation strength, and compared with the prior art, the method has the advantages that the thermal consolidation test precision is higher, the efficiency is higher, and meanwhile, the thermal consolidation effect of the soft soil to be tested is improved in an auxiliary manner.

Description

technical field [0001] The invention relates to the related technical fields of geotechnical engineering and foundation, and more specifically, relates to a soft soil thermal consolidation model test device and method. Background technique [0002] Soft soil generally refers to cohesive soil in soft plastic-fluid plastic state with high natural water content, high compressibility, low bearing capacity and low shear strength. Soft soil is a general term for a type of soil, not a specific soil. In engineering, soft soil is often subdivided into soft clay soil, muddy soil, silt, peaty soil and peat. It has high natural water content, large natural void ratio, high compressibility, low shear strength, small consolidation coefficient, long consolidation time, high sensitivity, large disturbance, poor water permeability, complex layered distribution of soil layers, and The physical and mechanical properties are quite different among them. [0003] In the coastal areas of Zhejian...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N3/08G01N33/24
CPCG01N3/08G01N33/24G01N2203/0019G01N2203/0222G01N2203/0236
Inventor 闻敏杰
Owner ZHEJIANG UNIV
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