CN207662537U - Energy stake centrifugal model experimental provision suitable for drum centrifuge - Google Patents
Energy stake centrifugal model experimental provision suitable for drum centrifuge Download PDFInfo
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- CN207662537U CN207662537U CN201820091052.8U CN201820091052U CN207662537U CN 207662537 U CN207662537 U CN 207662537U CN 201820091052 U CN201820091052 U CN 201820091052U CN 207662537 U CN207662537 U CN 207662537U
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Abstract
The utility model belongs to Geotechnical Engineering field, is related to a kind of energy stake centrifugal model experimental provision suitable for drum centrifuge.The device includes energy stake model and measurement system, and energy stake model includes concrete, miniature heat exchanger tube, foil gauge and steel reinforcement cage；Measurement system includes displacement meter, force snesor, miniature soil pressure cell and array of temperature sensor.The utility model effectively controls pile body temperature, realizes cold cycling by the way that miniature heat-exchange tube is arranged inside energy stake model；Pile body arranges foil gauge, can measure pile strain；Pile peripheral earth lays array of temperature sensor, it can be achieved that measurement to pile peripheral earth temperature change value；Miniature soil pressure cell is arranged in stake side, can measure in experimentation stake week horizontal earth pressure and vertical earth pressure knots modification；Model casing is arranged in drum centrifuge, its mechanism of action is studied in deployable energy stake centrifugal model test.The utility model is simple in structure, economic and practical, and operability is strong, it is easy to accomplish.
Description
Technical field
The utility model belongs to geotechnical engineering field, is related to a kind of centrifugal model experiment of ground-source heat pump system energy piles,
More particularly to a kind of energy stake centrifugal model experimental provision suitable for drum centrifuge.
Background technology
In pile foundation, since single-pile stress feature is mainly influenced by interaction between pile and soil, pile body stress characteristic often makes
It is simulated with linear elasticity.It interacts between feasible simulation Pile Soil, the resistance to shear of soil for reproducing GRAVITY CONTROL is horizontal, for pile foundation model
Experiment is of great significance.The basic principle of centrifugal model experiment is that geotechnical model is placed in high-speed rotating centrifuge, is made
Bear higher centrifugal acceleration, to compensate the loss of the gravity caused by model scale.With soil test technique
Fast development, centrifugal model test the important means for having become pile foundation research.
Ground source heat pump technology is a kind of novel energy-saving emission-reducing technology using geothermal source, for improving traditional petrochemical industry
Energy resource structure promotes the development of society to be of great significance.The technology is not occurred using geothermal source temperature with season substantially
The characteristic of change is flowed by liquid in heat exchanger tube so that energy exchange occurs for upper building and geothermal source, to reach
To refrigeration or the purpose of heating.Heat exchanger tube and conventional concrete bored concrete pile are organically combined, the novel pile basis formed is
Energy stake.Energy stake has both pile foundation and earth source heat pump effect, can undertake top-out load and improve earth source heat pump
Heat exchange efficiency, while cost can also be greatly lowered, solve the problems, such as that heat exchanger tube occupies the underground space, thus gradually by engineering skill
The concern of art personnel.
As a kind of special pile foundation, energy stake is acted on by Thermal-mechanical Coupling at work, load-carrying properties it is totally different in
Common pile foundation.Under the conditions of ng, energy stake working performance is studied by centrifugal model test, for clearly recognizing heat
Power coupling factor has particularly important meaning to the mechanism of action of energy stake and its application and popularization.Recent domestic needle
Model experiment under the conditions of a large amount of 1g has been carried out to energy stake technology and has achieved certain achievement, however model experiment is still under the conditions of ng
Relatively fewer and more coarse in temperature control aspect, this greatly hinders the progress of energy stake.
Utility model content
The utility model aim is to overcome the shortcomings of existing experimental provision, provides a kind of energy suitable for drum centrifuge
Stake centrifugal model experimental provision is measured, the working mechanism of energy stake can be unfolded to study under the conditions of ng.
The utility model adopts the following technical solution：
A kind of energy stake centrifugal model experimental provision suitable for drum centrifuge, including energy stake model 10 and measurement system
System；
The energy stake model 10, mainly by 19 groups of concrete 20, miniature heat-exchange tube 18, foil gauge and steel reinforcement cage
At；The miniature heat-exchange tube 18, outside are supported and are surrounded by steel reinforcement cage 19, and 19 periphery covering of steel reinforcement cage and inside are filled with
Concrete 20 constitutes the pile body of cylindrical energy stake model 10；Multiple foil gauges are posted on the outside of pile body, are answered for measuring pile body
Become；Load cover board 16 is provided at the pile crown of pile body, convenient for loading and measuring pile deflection；The energy stake model 10 is inserted in
In pile peripheral earth 17 in model casing 8；The madial wall of the model casing 8 is coated with thermal insulation material 14, prevents heat loss；
The measurement system, including displacement meter 11, force snesor 12, miniature soil pressure cell 13 and array of temperature sensor
15；The displacement meter 11 is installed on load cover board 16, measures pile deflection；The force snesor 12 is sleeved on pile crown,
It is fixed on load cover board 16, measures pile head load；The miniature soil pressure cell 13 is arranged in pile peripheral earth 17, is located at energy
The side and bottom of stake model 10 are measured, the changing value with pile body bottom level soil pressure and vertical soil pressure around pile body is measured；It is described
Array of temperature sensor 15 be arranged in pile peripheral earth 17, be located at energy stake model 10 the other side, respectively apart from pile body axis
At one times of the heart, two times, three times and four times of stake diameters, the changing value of pile peripheral earth temperature is measured.
The energy stake model 10, section are circle.
The intensity of the concrete 20 is C20~C60, polish or glues layer of fine sand in pile body, to change
Pile body roughness.
The miniature heat-exchange tube 18, is polythene material, and pipe laying form is U-shaped.
The thermal insulation material 14 is composite aluminium-magnesium-silicate heat-barrier material.
A kind of application method of energy stake centrifugal model experimental provision suitable for drum centrifuge, 10 He of energy stake model
Measurement system is placed in the pile peripheral earth 17 of model casing 8；Drum 2 is located at the inside of drum centrifuge external drum 1 in drum centrifuge,
Cold cycling water pump 3 is located at the outside of drum centrifuge external drum 1；Two model casings 8 are symmetrically fixed on drum 2 in drum centrifuge
In, so that the central axes of two model casings 8 is overlapped with the central axes of drum centrifuge report control platform 7, drum centrifuge actuator 9；Energy
The miniature heat-exchange tube 18 in stake model 10 is measured by rotary joint 6, respectively with the outlet pipe of cold cycling water pump 34 and water inlet
Pipe 5 is connected, and to change pile body temperature, realizes cold cycling.
The beneficial effects of the utility model：By the way that miniature heat-exchange tube, miniature heat exchange are arranged inside energy stake model
Pipe is connected with cold cycling water pump, can effectively be controlled pile body temperature, realizes cold cycling；Pile body arranges foil gauge, can measure
Pile strain；Pile peripheral earth lays array of temperature sensor, it can be achieved that measurement to pile peripheral earth temperature change value；Stake side arrangement
Miniature soil pressure cell, can measure experimentation in stake week horizontal earth pressure and vertical earth pressure knots modification；By model casing cloth
It is placed in drum centrifuge, its mechanism of action is studied in deployable energy stake centrifugal model test.The utility model is simple in structure,
Economic and practical, operability is strong, it is easy to accomplish.
Description of the drawings
Fig. 1 is the general arrangement schematic of the utility model embodiment；
Fig. 2 is the model casing arrangement schematic diagram of the utility model embodiment；
Fig. 3 is the measurement system schematic diagram of the utility model embodiment；
Fig. 4 is the energy stake model schematic of the utility model embodiment；
Fig. 5 is the vertical view of the energy stake model of the utility model embodiment.
In figure：1 drum centrifuge external drum；Drum in 2 drum centrifuges；3 cold cycling water pumps；4 outlet pipes；
5 water inlet pipes；6 rotary joints；7 drum centrifuge report control platforms；8 model casings；
9 drum centrifuge actuator；10 energy stake models；11 displacement meters；12 force snesors；
13 miniature soil pressure cells；14 thermal insulation materials；15 array of temperature sensor；16 load cover boards；
17 pile peripheral earths；18 miniature heat-exchange tubes；19 steel reinforcement cages；20 concrete.
Specific implementation mode
Specific embodiment of the present utility model is described in detail below in conjunction with the accompanying drawings.The scope of protection of the utility model not only office
It is limited to the description of present embodiment.
It is the general arrangement schematic of the utility model as shown in Figure 1, is model casing arrangement schematic diagram as shown in Figure 2.Make
Model casing 8 is symmetrically fixed in drum centrifuge in drum 2 by the used time, is allowed to central axes and drum centrifuge report control platform 7 and drum
Formula centrifuge actuator 9 flushes；Cold cycling water pump 3 is set to outside drum centrifuge, and micro- inside energy stake model 10
Type heat-exchange tube connects, and energy stake model 10 is placed in the pile peripheral earth 17 inside model casing 8.
It is illustrated in figure 3 the measurement system schematic diagram of the utility model.In use, applying thermal insulation material in 8 inner wall of model casing
14, heat loss is prevented, actual arrival setting value then is hit into the layering of pile peripheral earth 17.In the process, by miniature soil pressure cell 13,
Array of temperature sensor 15 and energy stake model 10 are respectively arranged in pile peripheral earth 17.Wherein, miniature soil pressure cell 13 according to
Experiment needs to be arranged, and array of temperature sensor 15 is laid in respectively apart from 10 1 times of energy stake model, two times, three times and four
At times stake diameter.Load cover board 16 is installed, convenient for loading and measuring pile deflection, pile head load is logical at 10 pile crown of energy stake model
It crosses force snesor 12 and load cover board 16 is applied on energy stake model 10.Displacement meter 11 is set on load cover board 16, to
Measure pile deflection.
If Fig. 4 is the utility model energy stake model schematic.When making, according to requirement of experiment configuration reinforcement cage 19,
And be fixed together with miniature heat-exchange tube 18, the concrete 20 of certain label is then poured according to test requirements document, in standard bar
It conserves 28 days under part, can be used after demoulding.10 pile body of energy stake model posts foil gauge, can measure pile strain；Miniature heat
It exchanges pipe 18 to connect with hot and cold water water circulating pump 3 by outlet pipe 4 and water inlet pipe 5, to reach so that 10 pile body of energy stake model
By the purpose of the temperature load of cold cycling.
Claims (8)
1. a kind of energy stake centrifugal model experimental provision suitable for drum centrifuge, which is characterized in that including energy stake model
(10) and measurement system；
The energy stake model (10), mainly by concrete (20), miniature heat-exchange tube (18), foil gauge and steel reinforcement cage (19)
Composition；The miniature heat-exchange tube (18), external to be supported and surrounded by steel reinforcement cage (19), steel reinforcement cage (19) periphery covering and interior
Portion is filled with concrete (20), constitutes the pile body of cylindrical energy stake model (10)；Multiple foil gauges are posted on the outside of pile body, are used for
Measure pile strain；Load cover board (16) is provided at the pile crown of pile body, convenient for loading and measuring pile deflection；The energy
Stake model (10) is inserted in the pile peripheral earth (17) in model casing (8) Nei；The madial wall of the model casing (8) is coated with thermal insulation material
(14), heat loss is prevented；
The measurement system, including displacement meter (11), force snesor (12), miniature soil pressure cell (13) and temperature sensor battle array
It arranges (15)；The displacement meter (11) is installed on load cover board (16), measures pile deflection；Force snesor (12) set
It on pile crown, is fixed on load cover board (16), measures pile head load；The miniature soil pressure cell (13) is arranged in soil around pile
In body () 17, with pile body bottom level soil pressure and vertically around the side and bottom of energy stake model (10), measurement pile body
The changing value of soil pressure；The array of temperature sensor (15) is arranged in pile peripheral earth (17), is located at energy stake model (10)
The other side measure the changing value of pile peripheral earth temperature respectively at one times of pile body axle center, two times, three times and four times of stake diameters.
2. a kind of energy stake centrifugal model experimental provision suitable for drum centrifuge according to claim 1, feature
It is, the energy stake model (10), section is circle.
3. a kind of energy stake centrifugal model experimental provision suitable for drum centrifuge according to claim 1 or 2, special
Sign is that the intensity of the concrete (20) is C20~C60, polish or glues layer of fine sand in pile body, to change
Pile body roughness.
4. a kind of energy stake centrifugal model experimental provision suitable for drum centrifuge according to claim 1 or 2, special
Sign is that the miniature heat-exchange tube (18) is polythene material, and pipe laying form is U-shaped.
5. a kind of energy stake centrifugal model experimental provision suitable for drum centrifuge according to claim 3, feature
It is, the miniature heat-exchange tube (18), is polythene material, pipe laying form is U-shaped.
6. a kind of energy stake centrifugal model experimental provision suitable for drum centrifuge according to claim 1,2 or 5,
It is characterized in that, the thermal insulation material (14), is composite aluminium-magnesium-silicate heat-barrier material.
7. a kind of energy stake centrifugal model experimental provision suitable for drum centrifuge according to claim 3, feature
It is, the thermal insulation material (14), is composite aluminium-magnesium-silicate heat-barrier material.
8. a kind of energy stake centrifugal model experimental provision suitable for drum centrifuge according to claim 4, feature
It is, the thermal insulation material (14), is composite aluminium-magnesium-silicate heat-barrier material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820091052.8U CN207662537U (en) | 2018-01-19 | 2018-01-19 | Energy stake centrifugal model experimental provision suitable for drum centrifuge |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820091052.8U CN207662537U (en) | 2018-01-19 | 2018-01-19 | Energy stake centrifugal model experimental provision suitable for drum centrifuge |
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| Publication Number | Publication Date |
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| CN207662537U true CN207662537U (en) | 2018-07-27 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108225610A (en) * | 2018-01-19 | 2018-06-29 | 大连理工大学 | Suitable for the energy stake centrifugal model experimental provision and application method of drum centrifuge |
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2018
- 2018-01-19 CN CN201820091052.8U patent/CN207662537U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108225610A (en) * | 2018-01-19 | 2018-06-29 | 大连理工大学 | Suitable for the energy stake centrifugal model experimental provision and application method of drum centrifuge |
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