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Ultrasonic vibrating vacuum preloading test method

A test method, ultrasonic technology, applied in soil material testing, material inspection products, infrastructure engineering, etc., can solve problems such as drain plate clogging, achieve the effects of low construction noise, stable and uniform power output, and small soil disturbance

Pending Publication Date: 2018-09-07
TIANJIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Although a variety of improved vacuum preloading methods can improve the soil reinforcement effect to a certain extent, the defects of the vacuum preloading method itself cannot be completely avoided, especially the problem of drainage board silting, which needs to be further researched and developed.

Method used

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Embodiment Construction

[0025] The present invention will be described below in conjunction with the accompanying drawings and embodiments.

[0026] see figure 1 and figure 2 , the present invention provides a kind of ultrasonic vibration vacuum preloading test system, and concrete test device connection comprises, adds test soil sample 16 in the plexiglass model box 6, inserts ultrasonic vibration drainage plate (drainage plate 1 and ultrasonic transducer One end of the ultrasonic vibration drainage plate is connected to the ultrasonic generator 9 with a switch 10 through the data signal line 7, and the other end is connected to the drainage plate-steel hose conversion joint 3 connected to the steel wire hose 8; Lay one deck non-woven geotextile 4 earlier on the test soil sample, and lay one deck sealing film 5 above non-woven geotextile 4; The water-gas separation tank is placed above the electronic scale 15, and is connected with a vacuum pump 13 with a control valve 14.

[0027] The experimen...

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Abstract

The invention relates to an ultrasonic vibrating vacuum preloading test method. A system used by the ultrasonic vibrating vacuum preloading test method comprises a model box for accommodating a test soil sample, wherein water draining plates are inserted into the test soil sample; the water draining plates are connected with a hose through water draining plate-steel wire hose adapters; the hose isconnected with a water and gas separating tank equipped with a vacuum pressure gauge; the water and gas separating tank is connected with a vacuum pump through a hose and a control valve; the water draining plates are ultrasonic vibrating water draining plates; ultrasonic transducers connected with an ultrasonic generator are fixed to the water draining plates. By the ultrasonic vibrating vacuumpreloading test method, clogging of the water draining plates can be effectively prevented, the consolidation rate of vacuum preloading drainage is increased, the dissipation of pore water pressure isaccelerated, and the soil reinforcing effect is improved.

Description

technical field [0001] The invention relates to an ultrasonic vibration vacuum preloading test system. Background technique [0002] With the large-scale development and construction of public transportation infrastructure, the demand for land resources in densely populated coastal areas is increasing. The shortage of land resources has seriously affected and hindered the development of urbanization, and it is also a key issue restricting the development of coastal resources. . Many countries and regions have solved this problem by reclamation of the sea, and the vacuum preloading method is one of the main methods of soft soil or ultra-soft soil foundation treatment. The conventional vacuum preloading method is to lay a plastic drainage board in the soft soil foundation as a vertical drainage channel, then lay a sand cushion of a certain thickness on the surface of the foundation, and lay a drainage filter pipe in the sand cushion, and then seal the membrane Laying on the ...

Claims

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Application Information

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IPC IPC(8): G01N33/24E02D3/10
CPCG01N33/24E02D3/10
Inventor 雷华阳胡垚刘英男刘敏宋英杰缪姜燕
Owner TIANJIN UNIV
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