CN207096025U - A kind of novel foundation drainage test device - Google Patents
A kind of novel foundation drainage test device Download PDFInfo
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- CN207096025U CN207096025U CN201720952049.6U CN201720952049U CN207096025U CN 207096025 U CN207096025 U CN 207096025U CN 201720952049 U CN201720952049 U CN 201720952049U CN 207096025 U CN207096025 U CN 207096025U
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- soil sample
- sample chamber
- wall
- cover plate
- bottom base
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Abstract
The utility model discloses a kind of novel foundation drainage test device, including soil sample chamber outer wall, upper cover plate, lower bottom base and weighing device；The soil sample chamber outer wall is the steel cylinder of both ends open, on soil sample chamber outer wall lower port is placed in the annular groove of lower bottom base, soil sample chamber outer wall upper port is placed in the annular groove of upper cover plate, and the space between soil sample chamber outer wall, upper cover plate and lower bottom base forms soil sample chamber；It is provided with least a heating rod, heating rod bottom in soil sample chamber to be fixedly mounted on lower bottom base vertically, heating rod electrically connects with the heating controller outside soil sample chamber；An at least vacuum-pumping tube connected with the vavuum pump outside soil sample chamber is provided with soil sample chamber；The temperature sensor for detecting soil sample temperature is provided with soil sample chamber；The baroceptor for detecting absolute pressure is provided with vacuum-pumping tube；Lower bottom base is placed on weighing device, is lost using the water quality of the soil sample in weighing device measurement soil sample chamber.
Description
Technical field
The utility model, which belongs to, builds work test apparatus technical field, and in particular to a kind of novel foundation drainage test device.
Background technology
The outstanding feature of new hydraulic reclamation ultra-soft soil is that surface strength is extremely low, and its basement process is problem generally acknowledged both at home and abroad.It is right
This kind of ground is typically reinforced using draining concretion method, and preloading, vacuum method or vacuum are mainly used in China
Combined heap load precompacting method.But use conventional draining concretion method to reinforce stream mud, the mud scum of new hydraulic reclamation, it is pre- by 3~5 months
Pressure is reinforced, and settlement of foundation often exceeds that the settling amount of theoretical calculation is many than more significant, but the increased number of intensity after reinforcing
Value is smaller, it is impossible to meets the requirement of ground.
Ground is carried out to vacuumize while combine ground heating, is a kind of new foundation drainage reinforcement means, this practicality is new
Type aims to provide a kind of vacuum combined heating foundation drainage test instrument, and by this test instrument, model engineering is put into practice under lab,
Testing crew effective evaluation foundation drainage effect is helped, and key parameter is studied.
Utility model content
The purpose of this utility model is overcome the deficiencies in the prior art, there is provided a kind of novel foundation drainage test device.
The utility model is achieved through the following technical solutions：
A kind of novel foundation drainage test device, including soil sample chamber outer wall, upper cover plate, lower bottom base and weighing device；
The soil sample chamber outer wall is the steel cylinder of both ends open, and soil sample chamber outer wall lower port is placed on the annular recessed of lower bottom base
On in groove, soil sample chamber outer wall upper port is placed in the annular groove of upper cover plate, and upper cover plate and lower bottom base pass through screw rod, nut group
Soil sample chamber outer wall is stepped up to fix by part, and the space between soil sample chamber outer wall, upper cover plate and lower bottom base forms soil sample chamber；
At least a heating rod, heating rod bottom are provided with soil sample chamber to be fixedly mounted on lower bottom base vertically, are heated
Rod electrically connects with the heating controller outside soil sample chamber；
An at least vacuum-pumping tube connected with the vavuum pump outside soil sample chamber is provided with soil sample chamber；
The temperature sensor for detecting soil sample temperature is provided with soil sample chamber；
The baroceptor for detecting absolute pressure is provided with vacuum-pumping tube；
Lower bottom base is placed on weighing device, is lost using the water quality of the soil sample in weighing device measurement soil sample chamber.
In the above-mentioned technical solutions, in order to ensure the sealing of soil sample chamber, in the annular groove of upper cover plate and lower bottom base
Annular groove in be provided with sealing rubber ring.
In the above-mentioned technical solutions, vacuum-pumping tube is through being arranged on upper cover plate, and vacuum-pumping tube bottom is deeply to soil sample chamber
Interior, vacuumizing in soil sample chamber uniformly offers through hole and is enclosed with filter cloth on pipeline section, and upper cover plate is stretched out in vacuum-pumping tube outlet, takes out
Vacuum tube outlet connects vavuum pump by flexible pipe.
In the above-mentioned technical solutions, the temperature sensor is arranged on soil sample chamber outer wall in the present embodiment, and temperature passes
The probe of sensor gos deep into soil sample chamber.
The application method of the novel foundation drainage test device is as follows：
Step 1：Upper cover plate is opened, soil sample is inserted into soil sample chamber, to loading the parameters such as soil sample height, moisture content, density
It is measured；Then upper cover plate is installed, upper cover plate is fixed with lower bottom base with screw rod, nut assembly, makes vacuum-pumping tube insertion soil
In sample；Then the initial value of weighing device is recorded；
Step 2：Heating rod is opened, the soil sample in soil sample chamber is heated, and opens vavuum pump, utilizes vacuum-pumping tube
To carrying out vacuumize process in soil sample chamber；
Step 3：Soil sample indoor temperature, the vacuum of record at different moments, and the value of weighing of weighing device；
Step 4：Experimental data is arranged, vacuum combined heating foundation drainage effect is evaluated according to experimental data.
Further, in step 2, matching is carried out according to the following table in heating-up temperature and absolute pressure, by the liquid in soil sample
State water is converted into gaseous state；I.e. when heating-up temperature is 50 DEG C, absolute pressure need to be less than 12.34kPa, then water switchs to gas by liquid
State；When heating-up temperature is 55 DEG C, absolute pressure need to be less than 15.743kPa, then water switchs to gaseous state by liquid；When heating-up temperature is
At 60 DEG C, absolute pressure need to be less than 19.923kPa, then water switchs to gaseous state by liquid；When geotemperature is 65 DEG C, absolute pressure
25.014kPa need to be less than, then water switchs to gaseous state by liquid；When heating-up temperature is 70 DEG C, absolute pressure need to be less than
31.164kPa, then water gaseous state is switched to by liquid.
| Temperature (DEG C) | 50 | 55 | 60 | 65 | 70 |
| Absolute pressure (kPa) | 12.34 | 15.743 | 19.923 | 25.014 | 31.164 |
The advantages of the utility model and have the beneficial effect that：
The utility model is designed reasonably, it is simple in construction, simulate vacuum combined heating under lab by this experimental rig
Foundation drainage method, testing crew effective evaluation foundation drainage effect is helped, and key parameter is studied.
Using weighing device, the water quality penalty values of the soil sample in soil sample chamber during experiment can be supervised in real time
Survey.During experiment, water can gasify, and discharge rate can not be drawn by measuring the quality of water, so this test instrument passes through title
Reset the value of weighing that the initial value put subtracts weighing device during experiment, the water of the soil sample during as testing in soil sample chamber
Mass loss value.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the structural representation of soil sample chamber outer wall of the present utility model.
Fig. 3 is upper cover plate of the present utility model, the structural representation of lower bottom base.
Embodiment
The technical solution of the utility model is further illustrated with reference to specific embodiment.
A kind of novel foundation drainage test device, referring to accompanying drawing 1, including soil sample chamber outer wall 1, upper cover plate 2, the and of lower bottom base 3
Weighing device 13；
The soil sample chamber outer wall 1 is the steel cylinder (referring to accompanying drawing 2) of both ends open, and soil sample chamber outer wall lower port is placed on down
On in the annular groove of base 3, soil sample chamber outer wall upper port is placed in the annular groove of upper cover plate 2, upper cover plate and lower bottom base
Soil sample chamber outer wall is stepped up to fix by screw rod, nut assembly 4, the space shape between soil sample chamber outer wall, upper cover plate and lower bottom base
Into soil sample chamber, in order to ensure the sealing of soil sample chamber, it is all provided with the annular groove of upper cover plate and in the annular groove of lower bottom base
It is equipped with sealing rubber ring 5；
At least a heating rod 6, heating rod bottom is provided with soil sample chamber to be fixedly mounted on lower bottom base 3, add vertically
Hot pin electrically connects with the heating controller 7 outside soil sample chamber；
At least one vacuum-pumping tube 8 connected with the vavuum pump outside soil sample chamber is provided with soil sample chamber, vacuum-pumping tube passes through
Wear and be arranged on upper cover plate 2, vacuum-pumping tube bottom is goed deep into soil sample chamber, and vacuumizing in soil sample chamber uniformly offers on pipeline section
Through hole and filter cloth is enclosed with, upper cover plate is stretched out in vacuum-pumping tube outlet, and vacuum-pumping tube outlet connects vavuum pump 10 by flexible pipe 9；
The temperature sensor 11 for detecting soil sample temperature is provided with soil sample chamber, the temperature passes in the present embodiment
Sensor 11 is arranged on soil sample chamber outer wall, and the probe of temperature sensor gos deep into soil sample chamber；
The baroceptor 14 for detecting absolute pressure, the lead of baroceptor 14 are provided with vacuum-pumping tube 8
Draw vacuum-pumping tube 8 and be connected to detecting instrument 15；
Lower bottom base 3 is placed on weighing device 13, and the water quality that the soil sample in soil sample chamber is measured using weighing device 13 is damaged
Lose.
In the present embodiment, referring to accompanying drawing 3, upper cover plate and lower bottom base are that shape is identical, symmetrically arranged two plectanes,
Be provided with upper cover plate and lower bottom base position it is corresponding be used for penetrate the through hole a of screw rod, in the relative of upper cover plate and lower bottom base
Face is provided with the annular groove for installing soil sample chamber outer wall, and sealing rubber ring 5 is provided with annular groove.
The application method of novel foundation drainage test device is as follows：
Step 1：Upper cover plate 2 is opened, soil sample is inserted into soil sample chamber, to loading the ginseng such as soil sample height, moisture content, density
Number is measured；Then upper cover plate 2 is installed, upper cover plate is fixed with lower bottom base with screw rod, nut assembly, inserts vacuum-pumping tube
In soil sample；Then the initial value of weighing device is recorded；
Step 2：Heating rod 6 is opened, the soil sample in soil sample chamber is heated, and open vavuum pump 10, using vacuumizing
Pipe is to carrying out vacuumize process in soil sample chamber；
Step 3：Soil sample indoor temperature, the vacuum of record at different moments, and the value of weighing of weighing device；
Step 4：Arranging experimental data, (initial value of weighing device subtracts the value of weighing of weighing device during experiment, i.e.,
During experiment, the water quality penalty values of the soil sample in soil sample chamber), according to experimental data to vacuum combined heating foundation drainage
Effect is evaluated.
In step 2, in step 2, heating-up temperature and absolute pressure are matched according to following table (table 1), by soil
Aqueous water in sample is converted into gaseous state；I.e. when heating-up temperature is 50 DEG C, absolute pressure need to be less than 12.34kPa, then water is by liquid
Switch to gaseous state；When heating-up temperature is 55 DEG C, absolute pressure need to be less than 15.743kPa, then water switchs to gaseous state by liquid；Work as heating
When temperature is 60 DEG C, absolute pressure need to be less than 19.923kPa, then water switchs to gaseous state by liquid；When geotemperature is 65 DEG C, absolutely
25.014kPa need to be less than to pressure, then water switchs to gaseous state by liquid；When heating-up temperature is 70 DEG C, absolute pressure need to be less than
31.164kPa, then water gaseous state is switched to by liquid.
| Temperature (DEG C) | 50 | 55 | 60 | 65 | 70 |
| Absolute pressure (kPa) | 12.34 | 15.743 | 19.923 | 25.014 | 31.164 |
Table 1
Exemplary description is done to the utility model above, it should explanation, do not departing from core of the present utility model
In the case of the heart, any simple deformation, modification or other skilled in the art can not spend creative work etc.
The scope of protection of the utility model is each fallen within replacing.
Claims (4)
- A kind of 1. novel foundation drainage test device, it is characterised in that：Including soil sample chamber outer wall, upper cover plate, lower bottom base and weigh Device；The soil sample chamber outer wall is the steel cylinder of both ends open, and soil sample chamber outer wall lower port is placed in the annular groove of lower bottom base On, soil sample chamber outer wall upper port is placed in the annular groove of upper cover plate, and upper cover plate and lower bottom base will by screw rod, nut assembly Soil sample chamber outer wall steps up to fix, and the space between soil sample chamber outer wall, upper cover plate and lower bottom base forms soil sample chamber；At least a heating rod, heating rod bottom is provided with soil sample chamber to be fixedly mounted on lower bottom base vertically, heating rod with Heating controller electrical connection outside soil sample chamber；An at least vacuum-pumping tube connected with the vavuum pump outside soil sample chamber is provided with soil sample chamber；The temperature sensor for detecting soil sample temperature is provided with soil sample chamber；The baroceptor for detecting absolute pressure is provided with vacuum-pumping tube；Lower bottom base is placed on weighing device.
- 2. novel foundation drainage test device according to claim 1, it is characterised in that：In the annular groove of upper cover plate Sealing rubber ring is provided with the annular groove of lower bottom base.
- 3. novel foundation drainage test device according to claim 1, it is characterised in that：Vacuum-pumping tube, which runs through, to be arranged on On cover plate, vacuum-pumping tube bottom is goed deep into soil sample chamber, and vacuumizing in soil sample chamber uniformly offers through hole and parcel on pipeline section There is filter cloth, upper cover plate is stretched out in vacuum-pumping tube outlet, and vacuum-pumping tube outlet connects vavuum pump by flexible pipe.
- 4. novel foundation drainage test device according to claim 1, it is characterised in that：The temperature sensor is arranged on On soil sample chamber outer wall, the probe of temperature sensor gos deep into soil sample chamber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720952049.6U CN207096025U (en) | 2017-07-31 | 2017-07-31 | A kind of novel foundation drainage test device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720952049.6U CN207096025U (en) | 2017-07-31 | 2017-07-31 | A kind of novel foundation drainage test device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207096025U true CN207096025U (en) | 2018-03-13 |
Family
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720952049.6U Expired - Fee Related CN207096025U (en) | 2017-07-31 | 2017-07-31 | A kind of novel foundation drainage test device |
Country Status (1)
| Country | Link |
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| CN (1) | CN207096025U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107543913A (en) * | 2017-07-31 | 2018-01-05 | 中交天津港湾工程研究院有限公司 | Vacuum combined heating foundation drainage test instrument |
-
2017
- 2017-07-31 CN CN201720952049.6U patent/CN207096025U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107543913A (en) * | 2017-07-31 | 2018-01-05 | 中交天津港湾工程研究院有限公司 | Vacuum combined heating foundation drainage test instrument |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180313 |
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| CF01 | Termination of patent right due to non-payment of annual fee |