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Vacuum preloading indoor model testing apparatus

An indoor model and test device technology, which is applied in the direction of basic structure test, soil material test, material inspection product, etc., can solve the problem of airtightness, reduce the airtightness of vacuum system, reduce the feasibility and reliability of indoor vacuum preloading model test Accuracy and other issues to achieve the effect of avoiding insufficient vacuum

Inactive Publication Date: 2015-01-07
SHANGHAI UNIV
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Problems solved by technology

However, there is no convenient test device, the airtightness problem is difficult to solve, the buried position of the data sensor cannot be accurately controlled, the vacuum degree in the soil and the pore water pressure in the soil are difficult to measure systematically, and the airtightness of the vacuum system will further increase when a large number of sensor lines are exported. The above problems reduce the feasibility and accuracy of the indoor vacuum preloading model test, making the research on the vacuum preloading method and reinforcement mechanism slow, and hindering the large-scale application of vacuum preloading in actual engineering

Method used

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  • Vacuum preloading indoor model testing apparatus
  • Vacuum preloading indoor model testing apparatus
  • Vacuum preloading indoor model testing apparatus

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Embodiment Construction

[0017] The present invention will be further described below in conjunction with accompanying drawings and examples.

[0018] Such as Figure 1~5 As shown, a vacuum preloading indoor model test device includes four parts: a vacuum system, a displacement measurement system, a vacuum degree measurement system, and a pore water pressure measurement system; the vacuum system includes a model box 1, a drain plate 9, a manual Type joint 10, drainage main pipe 11, suction filter bottle 13, rubber tube 14, vacuum pump 15, suction filter bottle vacuum gauge 17; Described drainage board 9 is installed in the middle of model box 1, and the top of described drainage board 9 passes hand type Joint 10 is connected to drain main pipe 11, and said drain main pipe 11 passes through the opening seal on the top panel 12 of the model box, and is connected to suction filter bottle 13, and said suction filter bottle 13 is connected to vacuum pump 15 through rubber tube 14, and said suction filter b...

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Abstract

The invention discloses a vacuum preloading indoor model testing apparatus which comprises a vacuum pumping system, a water discharging amount measurement system, a vacuum degree measurement system and a pore water pressure measurement system. The vacuum pumping system comprises a model box, a water discharging plate, a hand-type joint, a main water discharging tube, a suction flask, a rubber tube, a vacuum pump and a suction flask vacuum meter. The water discharging amount measurement system comprises a suction flask and an electronic scale. The vacuum degree measurement system comprises a vacuum tube and a vacuum meter. The pore water pressure measurement system comprises a vacuum tube and a miniature pore water pressure gauge. The vacuum preloading indoor model testing apparatus is simple and reasonable in structure and convenient to operate and can be used for carrying out a vacuum-preloading-method soft soil foundation reinforcement model test and systematically researching vacuum degree transfer in soil and a pore water pressure change rule.

Description

technical field [0001] The invention relates to a vacuum preloading indoor model test device, which is used for simulating vacuum preloading treatment of soft ground. Background technique [0002] With the rapid economic development, in order to alleviate the tension of land use in coastal cities, a large amount of land needs to be formed by reclamation from the sea. The dredged land reclamation used for land reclamation generally adopts dredged silt from harbor basins and waterways, and is hydraulically dredged to form a land site with a moisture content of more than 80%, and the newly reclaimed site can even reach about 200%. In addition, due to hydraulic separation, the soil particles in the upper part of the weak soil foundation are extremely fine, mainly clay and colloidal particles, the connection between particles is very weak, and a strong soil skeleton structure has not yet been formed, and the soil particles have strong fluidity with water. Soft clay has many unfa...

Claims

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Application Information

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IPC IPC(8): E02D33/00
CPCG01N15/0826G01N33/24
Inventor 刘飞禹宓炜王军
Owner SHANGHAI UNIV
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