CN105651970A - Temperature control soil expansion instrument - Google Patents
Temperature control soil expansion instrument Download PDFInfo
- Publication number
- CN105651970A CN105651970A CN201610155901.7A CN201610155901A CN105651970A CN 105651970 A CN105651970 A CN 105651970A CN 201610155901 A CN201610155901 A CN 201610155901A CN 105651970 A CN105651970 A CN 105651970A
- Authority
- CN
- China
- Prior art keywords
- temperature
- wall
- instrument
- water container
- soil
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/24—Earth materials
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/44—Sample treatment involving radiation, e.g. heat
Abstract
The invention relates to a temperature control soil expansion instrument, comprising a water storage container, a head cover, a displacement acquisition system and a temperature control system, wherein the head cover is fixed on the water storage container. The water storage container comprises a base and the outer wall which is of a sandwich structure; the displacement acquisition system comprises an axial displacement sensor, a wire and a data acquisition instrument; the temperature control system comprises a silicone rubber electric heater, a wire, a temperature controller and a temperature sensor. The temperature control soil expansion instrument provided by the invention has the function of a conventional soil expansion instrument, also can realize the accuracy control om experimental temperature by the temperature control system, can perform expansion tests of a soil body under different temperatures, and realizes automatic collection to the mount of volume expansion when the soil body is soaked in water, and measured data is accurate.
Description
Technical field
The invention belongs to Geotechnical Engineering soil test technique field, be specifically related to a kind of temperature and control soil swelling instrument, it is adaptable to measure the volume in immersion process of the soil body under different temperatures and increase swell increment.
Background technology
Under field conditions (factors), there is an initial temperature field in the soil body self, temperature gradually changes along the increase of the soil body degree of depth, and then has influence on the engineering properties of the soil body. And we are when using conventional soil dilatometer that the swell increment of cohesive soil is measured, carrying out when room temperature often, have ignored the impact of temperature, the swell increment finally recorded is inaccurate, can not meet the needs of Practical Project. Meanwhile, when using traditional dilatometer that cohesive soil swell increment is measured, it is necessary to surveying every 2h artificially and count Acquisition Instrument once, until expanding stable when twice reading difference is less than 0.01mm, inefficiency, test error is also big.
Summary of the invention
For defect and the deficiency of above-mentioned prior art, the present invention provides a kind of temperature to control soil swelling instrument, it is possible to experimental temperature is accurately controlled and measures, and carries out the soil expansion rate test under different temperatures; Simultaneously to soil expansion amount real time data automation collection, surveyed data are accurate, solve the shortcoming that swell increment can not be measured continuously and automatically record, error is bigger.
The present invention is achieved through the following technical solutions above-mentioned purpose: a kind of temperature controls soil swelling instrument, including water container, top cover, temperature control system and displacement acquisition system. Concrete structure and annexation be:
Described top cover is fixed on water container.
Described water container includes base, outer wall and support with adjustable, and base welds with outer wall, and base has support with adjustable, and outer wall is connected with temperature controller by wire.
Described temperature control system includes silicone rubber electric heating piece, temperature sensor, wire and temperature controller, described silicone rubber electric heating piece is arranged in outer wall interlayer, temperature sensor is fixed on top cover by nut, one end of temperature sensor is placed in the water in water container, the other end is connected with temperature controller by wire, and temperature controller connects power supply.
Described displacement control system includes shaft position sensor, wire and data collecting instrument, described shaft position sensor is fixed on the central authorities of top cover by nut, shaft position sensor one end contacts with pad top, the other end is connected with data collecting instrument by wire, data collecting instrument connects power supply, the axial displacement change of the pad in the automatic acquisition and recording process of the test of data collecting instrument.
Described outer wall is sandwich, and outer wall is provided externally with layer of glass.
Described silicone rubber electric heating piece is the film like electrothermal device of soft yieldable, is uniformly close on the inwall of water container outer wall interlayer.
In described base, waterflood path is set, by waterflood path toward water container water filling.
Described top cover is fixedly connected on water container outer wall by fixing bolt, and top cover arranges air bleeding valve, and top cover central authorities are fixedly installed shaft position sensor, and side is fixedly installed temperature sensor.
Described air bleeding valve connects water container inside and extraneous air, keeps atmospheric equilibrium, by waterflood path toward water container internal water flooding when being conducive to testing, avoids compressing, during cohesive soil water-swellable, the error that inner air causes simultaneously.
With multiple holes on described pad, in order to the bubble discharge in swell deformation of expansive soil encountered with water process.
Described cap base is connected by standing screw with outer wall end face, the circular hole one_to_one corresponding of the circular hole of top cover surrounding and outer wall surrounding.
Described water container base central authorities are provided with annular tank, annular tank is placed permeable stone, permeable stone is placed cutting ring, and cutting ring is internal is soil sample; One retaining ring is set outside permeable stone and cutting ring, it is prevented that expand; Cutting ring is placed another lead ring, is fixed on base by only screw rod; Placing pad in soil sample, pad top contacts with shaft position sensor one end.
The prominent effect of the present invention is in that:
1, owing to being provided with temperature control system, it is achieved that accurately controlling and measuring experimental temperature, it is possible to carry out cohesive soil swelling rate test at different temperatures.
2, owing to being provided with displacement acquisition system, it is achieved that the automatization of DATA REASONING and collection, decrease the triviality of every 2h reading in measurement process, improve work efficiency, and surveyed data are accurate.
3, in order to make soil sample entirety thermally equivalent, uniformly it is close to silicone rubber electric heating piece at water container outer wall, is effectively ensured the uniformity of heating.
4, in order to prevent scattering and disappearing of heat in water container, water container outer wall is provided with sandwich, and glass fibre is set at outer wall, be also provided with top cover at water container top simultaneously, effectively prevent scattering and disappearing of heat in water container.
Accompanying drawing explanation
Fig. 1 is the structural representation that temperature of the present invention controls soil swelling instrument;
Fig. 2 is the erection sequence schematic diagram that temperature of the present invention controls soil swelling instrument.
Wherein: 1-air bleeding valve, 2-top cover, 3-screw rod, 4-outer wall, 5-glass fibre, 6-lead ring, 7-cutting ring, 8-silicone rubber electric heating piece, 9-retaining ring, 10-base, 11-support with adjustable, 12-pad, 13-soil sample, 14-permeable stone, 15-shaft position sensor, 16-temperature sensor, 17-wire, 18-data collecting instrument, 19-temperature controller, 20-screw rod, 21-filling pipe.
Detailed description of the invention
Below by way of drawings and Examples, technical scheme is described further.
As shown in Figure 1 to Figure 2, temperature of the present invention controls soil swelling instrument, including water container, top cover 2, displacement acquisition system and temperature control system. Concrete structure and annexation be:
Described water container includes base 10, outer wall 4 and support with adjustable 11; Base 10 welds with outer wall 4, and base arranges support with adjustable 11 10 times, it is ensured that instrument level; Outer wall 4 is sandwich, and silicone rubber electric heating piece 8 is arranged in outer wall 4 interlayer, and is connected with temperature controller 19 by wire 17; Outer wall 4 is outside arranges layer of glass 5, it is prevented that heat loss in water container.
Described top cover 2 is arranged on water container, is fixedly connected on water container outer wall 4 by 3 fixing bolts 3; Top cover 2 arranges an air bleeding valve 1; Central authorities are fixedly installed a shaft position sensor 15, and one end contacts with pad 12 top, and the other end is connected with data collecting instrument 18 by wire 17; Top cover 2 periphery is fixedly installed a temperature sensor 16, and one end is placed in water container, and the other end is connected with temperature controller 19 by wire 17; It is connected by standing screw 3 with outer wall 4 end face bottom described top cover 2, wherein, the circular hole one_to_one corresponding of the circular hole of top cover 2 surrounding and outer wall 4 surrounding.
Described temperature control system includes silicone rubber electric heating piece 8, temperature sensor 16, wire 17 and temperature controller 19; The temperature change within water container of the described silicone rubber electric heating piece 8 provides thermal source, arranges around outer wall 4, and the two ends of its internal resistance silk are connected with temperature controller 19 by wire 17; Temperature sensor 16 is fixed on top cover 2 by a hold-doun nut, and its one end is placed in the water in water container, and the other end is connected with temperature controller 19 by wire 17; Temperature controller 19 connects power supply, and its range of error is �� 0.5 DEG C, it is possible to the water temperature within water container is accurately controlled.
Described displacement control system includes shaft position sensor 15, wire 17 and data collecting instrument 18; Shaft position sensor 15 is fixed on top cover 2 central authorities by a hold-doun nut, and one end contacts with pad 12 top, and the other end is connected with data collecting instrument 18 by wire 17; Data collecting instrument 18 connects power supply, it is possible to the axial displacement change of the pad 12 in acquisition and recording process of the test automatically.
Water container base 10 central authorities arrange annular tank, and tank is placed permeable stone 14, and permeable stone 14 is placed cutting ring 7, and cutting ring 7 is internal is soil sample 13; Permeable stone 14 and cutting ring 7 outside arrange a retaining ring 9, it is prevented that other swollen; Cutting ring is placed another lead ring 6, is fixed on base 10 by 3 screw rods 20; Placing pad 12 in soil sample 13, pad 12 top contacts with shaft position sensor 15 one end.
Concrete operation method is as follows:
1, preparation before experiment: preparing experiment is native, cut the auxiliary materials such as soil cutting ring 7, various sensor components, and whether each parts of inspection apparatus are normal; With cutting soil cutting ring 7 preparation experiment soil sample 13, soil sample is also positioned over climatic chamber 168h by equating two sides; By another temperature control water container, pure water is heated to the water temperature of experiment setting.
2, test specimen is installed: places retaining ring 9, permeable stone 14 in water container, is taken out from climatic chamber by the cutting ring 7 with soil sample and load in retaining ring 9; Then lead ring 6 is placed on cutting ring 7, and gently twists pressing with 3 screw rods 20, be fixed in base 10; Finally pad 12 is placed on soil sample 13 surface; Finally top cover 2 will be fixed on water container by screw rod 3, make bottom shaft position sensor 15 with pad 12 top contact;
3, open air bleeding valve 1, injected the pure water being heated to set water temperature by filling pipe 21 to water container, make the water surface be held in soil sample apparent height and flush, or make the water surface exceed soil sample 5mm by geotechnique's rule of operation, the simultaneously on and off switch of open temp controller 19 to arrange experiment temperature required, temperature controller 19 sends the instruction of temperature makes it begin to warm up to silicone rubber electric heating piece 8, the temperature of water in heated water container is tested in temperature sensor 16 simultaneously, when temperature reaches predetermined temperature, temperature sensor 16 detects and sends a return signal to temperature controller 19, temperature controller 19 sends the signal stopping heating again to silicone rubber electric heating piece 8, thus getting to the temperature constant purpose at predetermined temperature, thus, temperature display on temperature controller 19 will be constant in certain value,
4, being opened by data collecting instrument 18 after water filling, be set to every 2h automatic data collection once, the swell increment after soil sample is absorbed water gathers automatically, until expanding stable when twice reading difference is less than 0.01mm, namely experiment terminates.
The description of above-described embodiment is to be convenient for people to understand and apply the invention. Protection scope of the present invention is not limited by embodiment. Anyone improvement that the present invention is made and amendment are regarded as within scope.
Claims (9)
1. temperature controls a soil swelling instrument, including water container, top cover, temperature control system and displacement acquisition system, it is characterised in that concrete structure and annexation be:
Described top cover is fixed on water container,
Described water container includes base, outer wall and support with adjustable, and base welds with outer wall, and base has support with adjustable, and outer wall is connected with temperature controller by wire,
Described temperature control system includes silicone rubber electric heating piece, temperature sensor, wire and temperature controller, described silicone rubber electric heating piece is arranged in outer wall interlayer, temperature sensor is fixed on top cover by nut, one end of temperature sensor is placed in the water in water container, the other end is connected with temperature controller by wire, temperature controller connects power supply
Described displacement control system includes shaft position sensor, wire and data collecting instrument, described shaft position sensor is fixed on the central authorities of top cover by nut, shaft position sensor one end contacts with pad top, the other end is connected with data collecting instrument by wire, data collecting instrument connects power supply, the axial displacement change of the pad in the automatic acquisition and recording process of the test of data collecting instrument.
2. temperature according to claim 1 controls soil swelling instrument, it is characterised in that described outer wall is sandwich, and outer wall is provided externally with layer of glass.
3. temperature according to claim 1 controls soil swelling instrument, it is characterised in that: described silicone rubber electric heating piece is the film like electrothermal device of soft yieldable, is uniformly close on the inwall of water container outer wall interlayer.
4. temperature according to claim 1 controls soil swelling instrument, it is characterised in that arrange waterflood path in described base, by waterflood path toward water container water filling.
5. temperature according to claim 1 controls soil swelling instrument, it is characterized in that: described top cover is fixedly connected on water container outer wall by fixing bolt, arranging air bleeding valve on top cover, top cover central authorities are fixedly installed shaft position sensor, and side is fixedly installed temperature sensor.
6. temperature according to claim 5 controls soil swelling instrument, it is characterized in that: described air bleeding valve connection water container inside and extraneous air, keep atmospheric equilibrium, by waterflood path toward water container internal water flooding when being conducive to testing, avoid compressing, during cohesive soil water-swellable, the error that inner air causes simultaneously.
7. temperature according to claim 1 controls soil swelling instrument, it is characterised in that: with multiple holes on described pad, in order to the bubble discharge in swell deformation of expansive soil encountered with water process.
8. temperature according to claim 1 controls soil swelling instrument, it is characterised in that: described cap base is connected by standing screw with outer wall end face, the circular hole one_to_one corresponding of the circular hole of top cover surrounding and outer wall surrounding.
9. temperature according to claim 1 controls soil swelling instrument, it is characterised in that: described water container base central authorities are provided with annular tank, annular tank is placed permeable stone, permeable stone is placed cutting ring, and cutting ring is internal is soil sample; One retaining ring is set outside permeable stone and cutting ring, it is prevented that expand; Cutting ring is placed another lead ring, is fixed on base by only screw rod; Placing pad in soil sample, pad top contacts with shaft position sensor one end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610155901.7A CN105651970A (en) | 2016-03-18 | 2016-03-18 | Temperature control soil expansion instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610155901.7A CN105651970A (en) | 2016-03-18 | 2016-03-18 | Temperature control soil expansion instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105651970A true CN105651970A (en) | 2016-06-08 |
Family
ID=56494085
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610155901.7A Pending CN105651970A (en) | 2016-03-18 | 2016-03-18 | Temperature control soil expansion instrument |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105651970A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106770428A (en) * | 2016-12-15 | 2017-05-31 | 安徽理工大学 | A kind of dual control temperature soil expansion analyzer |
| CN107179390A (en) * | 2017-05-19 | 2017-09-19 | 铜陵长江金刚石工具有限责任公司 | A kind of high precision soil dilatometer |
| CN109781957A (en) * | 2017-11-12 | 2019-05-21 | 兰州城市学院 | A kind of soil function test barrel |
| CN113390784A (en) * | 2021-06-24 | 2021-09-14 | 深圳市市政工程总公司 | Shrinkage performance detection method for slag soil fluidized backfill material |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101806686A (en) * | 2010-03-26 | 2010-08-18 | 中国科学院地质与地球物理研究所 | Testing apparatus used for measuring repeated expansion and shrinkage of soil sample and use method thereof |
| CN102175539A (en) * | 2011-03-11 | 2011-09-07 | 北京交通大学 | Temperature-control pressure chamber system for unsaturated soil tri-axial apparatus |
| CN102221601A (en) * | 2011-06-08 | 2011-10-19 | 上海大学 | Temperature-controlled type unsaturated soil consolidometer |
| CN102221602A (en) * | 2010-04-15 | 2011-10-19 | 深圳泛华工程集团有限公司 | Tester for concrete free deformation |
| CN102230931A (en) * | 2011-06-15 | 2011-11-02 | 中国地质大学（武汉） | Dilatometer |
| CN102435631A (en) * | 2010-09-29 | 2012-05-02 | 深圳泛华工程集团有限公司 | Determinator for thermal expansion coefficients of concrete |
| CN104390845A (en) * | 2014-11-26 | 2015-03-04 | 同济大学 | Portable multifunctional soil mechanical property test device |
| CN205484329U (en) * | 2016-03-18 | 2016-08-17 | 广西大学 | Temperature control soil swelling appearance |
-
2016
- 2016-03-18 CN CN201610155901.7A patent/CN105651970A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101806686A (en) * | 2010-03-26 | 2010-08-18 | 中国科学院地质与地球物理研究所 | Testing apparatus used for measuring repeated expansion and shrinkage of soil sample and use method thereof |
| CN102221602A (en) * | 2010-04-15 | 2011-10-19 | 深圳泛华工程集团有限公司 | Tester for concrete free deformation |
| CN102435631A (en) * | 2010-09-29 | 2012-05-02 | 深圳泛华工程集团有限公司 | Determinator for thermal expansion coefficients of concrete |
| CN102175539A (en) * | 2011-03-11 | 2011-09-07 | 北京交通大学 | Temperature-control pressure chamber system for unsaturated soil tri-axial apparatus |
| CN102221601A (en) * | 2011-06-08 | 2011-10-19 | 上海大学 | Temperature-controlled type unsaturated soil consolidometer |
| CN102230931A (en) * | 2011-06-15 | 2011-11-02 | 中国地质大学（武汉） | Dilatometer |
| CN104390845A (en) * | 2014-11-26 | 2015-03-04 | 同济大学 | Portable multifunctional soil mechanical property test device |
| CN205484329U (en) * | 2016-03-18 | 2016-08-17 | 广西大学 | Temperature control soil swelling appearance |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106770428A (en) * | 2016-12-15 | 2017-05-31 | 安徽理工大学 | A kind of dual control temperature soil expansion analyzer |
| CN107179390A (en) * | 2017-05-19 | 2017-09-19 | 铜陵长江金刚石工具有限责任公司 | A kind of high precision soil dilatometer |
| CN109781957A (en) * | 2017-11-12 | 2019-05-21 | 兰州城市学院 | A kind of soil function test barrel |
| CN113390784A (en) * | 2021-06-24 | 2021-09-14 | 深圳市市政工程总公司 | Shrinkage performance detection method for slag soil fluidized backfill material |
| CN113390784B (en) * | 2021-06-24 | 2023-08-18 | 深圳市市政工程总公司 | Method for detecting shrinkage performance of slag soil fluidization backfill material |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104267172B (en) | A kind of multifunctional all formula soil body freezing-thawing test system | |
| CN105158291B (en) | A kind of explosive wastewater coefficient of volume expansion test device | |
| CN106680129B (en) | Rock sample recycles the simulation of dry and wet freezing-thawing and damage deterioration test device | |
| CN105651970A (en) | Temperature control soil expansion instrument | |
| CN204789419U (en) | Frozen soil is frozen swelling to be melted and sinks test device based on labview dynamic data gathers | |
| CN204154664U (en) | Soil sample freezing-thawing test device | |
| CN104215566A (en) | Visual soil freeze-thawing process test apparatus | |
| CN102426151A (en) | Multifunctional soil-water characteristic curve tester | |
| CN106596283A (en) | Temperature control three-axis system capable of accurately measuring unsaturated soil deformation rule | |
| CN105352990A (en) | Device and method for testing volume deformation of organic phase-change heat storage material | |
| CN109270116B (en) | Combined test method for measuring suction and thermal conductivity of unsaturated soil matrix | |
| CN106353359A (en) | Device for testing thermophysical parameters of soil mass sample | |
| KR20190021888A (en) | Loading device of freeze testing apparatus for ground | |
| KR101979775B1 (en) | Freeze testing apparatus for ground using up and down motion type multiplex cell | |
| CN205484329U (en) | Temperature control soil swelling appearance | |
| CN206876340U (en) | A kind of caliberating device for being used for pressure cell in frozen soil under condition of different temperatures | |
| CN106525567B (en) | Rock aging deformation test system under combined action of continuous water environment and variable temperature | |
| CN204904695U (en) | It forms experimental observation device that develops to do top layer | |
| Sivakumar et al. | Twin-cell stress path apparatus for testing unsaturated soils | |
| CN106442603A (en) | Test method capable of simulating thermophysical parameters of soil mass under different thermal loads | |
| CN213180999U (en) | Device for measuring hydration expansion performance of coal series mudstone | |
| CN205808740U (en) | A kind of measuring container structure of fuel charger assay device | |
| CN210514029U (en) | Experimental device for evaluating water lock damage of tight sandstone gas reservoir | |
| CN210639168U (en) | Temperature control type penetration consolidation cross test device | |
| CN206639070U (en) | Used in nuclear power station oil surface thermostat automatic calibrator |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20160608 |