CN105756105B - The pre- compression testing device of simple vacuum and the method using the pre- compression testing device test vacuum preloading efficiency of simple vacuum - Google Patents
The pre- compression testing device of simple vacuum and the method using the pre- compression testing device test vacuum preloading efficiency of simple vacuum Download PDFInfo
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- CN105756105B CN105756105B CN201610159863.2A CN201610159863A CN105756105B CN 105756105 B CN105756105 B CN 105756105B CN 201610159863 A CN201610159863 A CN 201610159863A CN 105756105 B CN105756105 B CN 105756105B
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- soil body
- bottle
- water
- vacuum
- supply connector
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Classifications
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D33/00—Testing foundations or foundation structures
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D3/00—Improving or preserving soil or rock, e.g. preserving permafrost soil
- E02D3/02—Improving by compacting
- E02D3/10—Improving by compacting by watering, draining, de-aerating or blasting, e.g. by installing sand or wick drains
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- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Civil Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- General Engineering & Computer Science (AREA)
- Soil Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Agronomy & Crop Science (AREA)
- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
- Examining Or Testing Airtightness (AREA)
Abstract
The present invention discloses a kind of pre- compression testing device of simple vacuum, including transparent cylinder, the experiment soil body is provided with cylinder, drain bar has been set in the soil body, soil body upper end is used to the soil body isolating from outside atmosphere covered with sealing sheet, the drain bar upper end is turned on by membrane device and flexible pipe with steam-water separation bottle, steam-water separation bottle is connected with vavuum pump, in the side wall of the cylinder multiple through holes are offered by different height, through hole is provided with water supply connector, the stop valve that control water supply connector opens and closes is installed at water supply connector, each water supply connector is each equipped with graduated L-type transparent pipeline.Present invention also offers the method using the pre- compression testing device test vacuum preloading efficiency of simple vacuum.The water-reducing rate and soil pressure of vacuum prepressing device can be effectively measured by the test device and method, and can be by setting the different conditions of the soil body and setting various draining board test water-reducing rates.
Description
Technical field
The present invention relates to a kind of pre- compression testing device of simple vacuum.The invention further relates to surveyed using above-mentioned simple vacuum precompressed
The method for trying device to test vacuum preloading efficiency.
Background technology
In the experiment of traditional vacuum precompressed processing, it is difficult to be surveyed to the pressure change in the soil body during vacuum preloading
Examination, therefore pressure in the soil body can not be drawn（Mainly air pressure）Influence to vacuum preloading water-reducing rate.
The content of the invention
In view of insufficient existing for background technology, the technical problems to be solved by the invention are to provide a kind of simple vacuum precompressed
Test device, the test device facilitate testing crew easily to be tested very much and quickly draw the pore pressure variable condition of the soil body
With the relation data between water content drop-out value.Present invention also offers true using the pre- compression testing device test of above-mentioned simple vacuum
The method of empty precompressed efficiency.
The present invention is adopted the following technical scheme that to complete：The pre- compression testing device of simple vacuum, including transparent cylinder, cylinder
Be provided with the experiment soil body in vivo, set drain bar in the soil body, soil body upper end covered with sealing sheet be used for by the soil body every
Turned in outside atmosphere, the drain bar upper end by membrane device and flexible pipe with steam-water separation bottle absolutely, steam-water separation bottle with it is true
Empty pump connection, it is characterized in that：Multiple through holes are offered by different height in the side wall of the cylinder, through hole is provided with into water and connect
Head, the stop valve that control water supply connector opens and closes is provided with water supply connector, and each water supply connector is each equipped with graduated L-type
Transparent pipeline.
Present invention also offers the method using the pre- compression testing device test vacuum preloading efficiency of above-mentioned simple vacuum, bag
Include：A, the soil body is poured into cylinder, and drainage plate striking is entered into the soil body, compactness is set according to the soil body of required simulation；B, will
Sealing sheet is covered on the soil body, and passes through sealing sheet using membrane device, and draining is connected with flexible pipe by membrane device
Plate and vavuum pump；C, L-type transparent pipeline is connected at the water supply connector for the height and position for needing to test；D, to L-type transparent pipe
Water is injected in road；E, vavuum pump is opened, passes through the water and L-type transparent pipeline obtained in steam-water separation bottle in observation unit's time
Middle water level decreasing number draw vacuum preloading test device carry out vacuum preloading processing after water content drop-out value and the soil body
Pore pressure.
Above-mentioned test device and method provided by the invention can effectively measure the water-reducing rate and the soil body of vacuum prepressing device
Pressure, and can be by setting the different conditions of the soil body and setting between various draining board test water-reducing rates and soil pressure
Relation.And the test device is simple in construction, cost is extremely low, and operation is convenient to.
Brief description of the drawings
The present invention has drawings described below：
Fig. 1 is the structural representation for inventing the pre- compression testing device of simple vacuum that the first embodiment provides.
Fig. 2 is the structural representation for the pre- compression testing device of simple vacuum that second of embodiment of invention provides.
Embodiment
Accompanying drawing illustrates technical scheme and embodiment, further describes embodiment in conjunction with accompanying drawing below
Each relevant details and its operation principle.
Shown in reference picture 1, the pre- compression testing device of simple vacuum of the first embodiment offer of the invention, including transparent cylinder
1, the experiment soil body 2 is provided with cylinder 1, drain bar 3 has been set in the soil body 2, the upper end of the soil body 2 is used covered with sealing sheet 4
In the soil body 2 is isolated from into outside atmosphere, sealing sheet 4 mainly uses diaphragm seal, and diaphragm seal can use elastomeric material, described
The upper end of drain bar 3 is turned on by membrane device 5 and flexible pipe 6 with steam-water separation bottle, and steam-water separation bottle is connected with vavuum pump 7, described
Multiple through holes are offered by different height in the side wall of cylinder 1, through hole is provided with water supply connector 8, is provided with water supply connector 8
The stop valve 9 for controlling water supply connector 8 to open and close, each water supply connector 8 are each equipped with graduated L-type transparent pipeline 10.This reality
Apply in example, scale is labeled with the side wall of the side wall of cylinder 1 and steam-water separation bottle.In order to fully receive the moisture in gas,
The steam-water separation bottle includes first bottle 11 and second bottle 12, and the flexible pipe 6 is connected with first bottle 11, first bottle 11 and second bottle
12 connections, second bottle 12 is connected with the vavuum pump 7.
Shown in reference picture 2, second of embodiment of the invention and the first embodiment are essentially identical, and it is differed only in：It is soft
Pipe 6 is connected with first bottle 11 and subtube 13 respectively by a three-way pipeline, and water check valve 14 is provided with subtube 13, is in charge of
Road 13 is connected with second bottle 12.The present embodiment mainly improves the connected mode of steam-water separation bottle, and operator can first close only
Water valve 14, when the water in first bottle 11 is full of, then water check valve 14 is opened, enable the gentle body of water respectively by the He of subtube 13
First bottle of 11 two approach is reached in second bottle 12, so as to be advantageous to the efficiency that the raising later stage vacuumizes.
Present invention also offers the method using the pre- compression testing device test vacuum preloading efficiency of simple vacuum, including：A、
The soil body 2 is poured into cylinder 1, and drain bar 3 is set into the soil body 2, compactness is set according to the soil body 2 of required simulation；B, will
Sealing sheet 4 is covered on the soil body 2, and passes through sealing sheet 4 using membrane device 5, is connected by membrane device 5 and flexible pipe 6
Connect drain bar 3 and vavuum pump 7；C, L-type transparent pipeline 10 is connected at the water supply connector 8 for the height and position for needing to test；D、
Water is injected into L-type transparent pipeline 10, water level is generally up to 2-3 rice；E, vavuum pump 7 is opened, passes through vapour in observation unit's time
In the water and L-type transparent pipeline 10 that are obtained in water separating bottle water level decreasing number to show that vacuum preloading test device is carried out true
Water content drop-out value and soil body pore pressure after empty precompressed processing.
Claims (1)
1. a kind of method that vacuum preloading efficiency is tested using the pre- compression testing device of simple vacuum, it is characterized in that：Simple vacuum is pre-
Compression testing device includes transparent cylinder, and the experiment soil body is provided with cylinder, and drain bar, the covering of soil body upper end have been set in the soil body
There is sealing sheet to be used to the soil body isolating from outside atmosphere, the drain bar upper end passes through membrane device and flexible pipe and carbonated drink point
Turned on from bottle, steam-water separation bottle is connected with vavuum pump；In the side wall of the cylinder multiple through holes, through hole are offered by different height
Place is provided with water supply connector, and the stop valve that control water supply connector opens and closes is provided with water supply connector, and each water supply connector configures
Have with graduated L-type transparent pipeline；Scale is labeled with the side wall of the cylinder lateral wall and steam-water separation bottle；The carbonated drink point
From bottle include first bottle and second bottle, the flexible pipe is connected with first bottle, and first bottle is connected with second bottle, second bottle and it is described very
Empty pump connection；The flexible pipe is connected with first bottle and subtube respectively by a three-way pipeline, and sealing is provided with subtube
Valve, subtube are connected with second bottle；Its method includes：A, the soil body is poured into cylinder, and drainage plate striking is entered into the soil body, according to
The soil body setting compactness of required simulation；B, sealing sheet is covered on the soil body, and used using membrane device through sealing
Sheet material, drain bar and vavuum pump are connected with flexible pipe by membrane device；L-type transparent pipeline is connected to the height position for needing to test C,
At the water supply connector put；D, water is injected into L-type transparent pipeline；E, vavuum pump is opened, passes through carbonated drink in observation unit's time point
From in the water and L-type transparent pipeline obtained in bottle water level decreasing number draw vacuum preloading test device carry out vacuum preloading
Water content drop-out value and soil body pore pressure after processing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610159863.2A CN105756105B (en) | 2016-03-21 | 2016-03-21 | The pre- compression testing device of simple vacuum and the method using the pre- compression testing device test vacuum preloading efficiency of simple vacuum |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610159863.2A CN105756105B (en) | 2016-03-21 | 2016-03-21 | The pre- compression testing device of simple vacuum and the method using the pre- compression testing device test vacuum preloading efficiency of simple vacuum |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105756105A CN105756105A (en) | 2016-07-13 |
| CN105756105B true CN105756105B (en) | 2018-04-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610159863.2A Active CN105756105B (en) | 2016-03-21 | 2016-03-21 | The pre- compression testing device of simple vacuum and the method using the pre- compression testing device test vacuum preloading efficiency of simple vacuum |
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| CN110186829A (en) * | 2019-05-31 | 2019-08-30 | 贵州大学 | A kind of physical simulation experiment device of seepage deformation monitoring and permeability parameters solution |
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| JPS586012B2 (en) * | 1980-05-14 | 1983-02-02 | 千代田化工建設株式会社 | Treatment method for soft and viscous ground using dynamic loading |
| JP5794707B2 (en) * | 2013-05-17 | 2015-10-14 | 五洋建設株式会社 | Suction force generator and vacuum consolidation ground improvement method |
| CN104790442B (en) * | 2015-05-05 | 2017-03-01 | 温州大学 | The full-scale model test test device of vacuum method soft soil foundation and its method for experimental test |
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Application publication date: 20160713 Assignee: XINTAI GEOTEXTILE MATERIAL CO.,LTD. Assignor: Wenzhou University Contract record no.: X2021330000832 Denomination of invention: Simple vacuum preloading test device and method for testing vacuum preloading efficiency by using simple vacuum preloading test device Granted publication date: 20180410 License type: Common License Record date: 20211221 |
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