CN108318324A - A kind of phase change concrete energy stake bath scaled model experimental device and its experimental method - Google Patents
A kind of phase change concrete energy stake bath scaled model experimental device and its experimental method Download PDFInfo
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- CN108318324A CN108318324A CN201810090665.4A CN201810090665A CN108318324A CN 108318324 A CN108318324 A CN 108318324A CN 201810090665 A CN201810090665 A CN 201810090665A CN 108318324 A CN108318324 A CN 108318324A
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- 230000002093 peripheral effect Effects 0.000 claims abstract description 23
- 238000005259 measurement Methods 0.000 claims abstract description 17
- 238000006073 displacement reaction Methods 0.000 claims abstract description 16
- 230000009466 transformation Effects 0.000 claims abstract description 11
- 230000036760 body temperature Effects 0.000 claims abstract description 10
- 239000002131 composite material Substances 0.000 claims abstract description 7
- 238000010438 heat treatment Methods 0.000 claims abstract description 7
- 238000001816 cooling Methods 0.000 claims abstract description 5
- 239000002689 soil Substances 0.000 claims description 20
- 230000005540 biological transmission Effects 0.000 claims description 13
- 229910000831 Steel Inorganic materials 0.000 claims description 10
- 230000002787 reinforcement Effects 0.000 claims description 10
- 239000010959 steel Substances 0.000 claims description 10
- 238000000034 method Methods 0.000 claims description 9
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- 239000004576 sand Substances 0.000 claims description 5
- 239000003292 glue Substances 0.000 claims description 4
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- 239000004698 Polyethylene Substances 0.000 claims description 3
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- -1 polyethylene Polymers 0.000 claims description 3
- 229920000573 polyethylene Polymers 0.000 claims description 3
- 230000008569 process Effects 0.000 claims description 3
- 238000004062 sedimentation Methods 0.000 claims description 3
- 230000008878 coupling Effects 0.000 claims description 2
- 238000010168 coupling process Methods 0.000 claims description 2
- 238000005859 coupling reaction Methods 0.000 claims description 2
- 239000000203 mixture Substances 0.000 claims 1
- 239000012782 phase change material Substances 0.000 abstract description 3
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N25/00—Investigating or analyzing materials by the use of thermal means
- G01N25/20—Investigating or analyzing materials by the use of thermal means by investigating the development of heat, i.e. calorimetry, e.g. by measuring specific heat, by measuring thermal conductivity
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- G—PHYSICS
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- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
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- G01N3/068—Special adaptations of indicating or recording means with optical indicating or recording means
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- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/022—Environment of the test
- G01N2203/0222—Temperature
- G01N2203/0226—High temperature; Heating means
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/022—Environment of the test
- G01N2203/0222—Temperature
- G01N2203/0228—Low temperature; Cooling means
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- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
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- G01N2203/0641—Indicating or recording means; Sensing means using optical, X-ray, ultraviolet, infrared or similar detectors
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- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/06—Indicating or recording means; Sensing means
- G01N2203/067—Parameter measured for estimating the property
- G01N2203/0676—Force, weight, load, energy, speed or acceleration
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/06—Indicating or recording means; Sensing means
- G01N2203/067—Parameter measured for estimating the property
- G01N2203/0682—Spatial dimension, e.g. length, area, angle
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Abstract
The invention belongs to Geotechnical Engineering field, it includes phase change concrete energy stake model, cooling and heating circulation system and measurement system to disclose a kind of phase change concrete energy stake bath scaled model experimental device and its experimental method, the device.By blending the phase transformation composite aggregate of different ratio, the optimal value that phase-change material matches in phase change concrete energy stake can be probed into；By the way that miniature heat-exchange tube is arranged inside phase change concrete energy stake model, miniature heat-exchange tube is connected with cold cycling water pump, can effectively be controlled pile body temperature, realizes cold cycling；In stake and fiber-optical grating temperature sensor and fiber Bragg grating strain sensor is respectively set in pile body, can measure pile body temperature and Strain Distribution；Pile peripheral earth lays array of temperature sensor, it can be achieved that measurement to pile peripheral earth temperature change value；Force snesor and displacement meter is arranged in pile crown, can carry out precision real time measuring and record to pile head load and displacement.The configuration of the present invention is simple, economic and practical, operability is strong, it is easy to accomplish.
Description
Technical field
The invention belongs to Geotechnical Engineering fields, are related to a kind of indoor model experiments of energy stake, more particularly to a kind of
Phase change concrete energy stake bath scaled model experimental device and its experimental method.
Background technology
Energy stake technology is a kind of novel energy-saving emission-reducing technology using geothermal source, for improving traditional petrochemical industry energy
Source structure promotes the development of society to be of great significance.The technology organically combines heat exchanger tube and conventional concrete bored concrete pile, simultaneous
Have pile foundation and earth source heat pump effect, top-out load can be undertaken and improve the heat exchange efficiency of earth source heat pump, simultaneously also
Cost can be greatly lowered, solve the problems, such as that heat exchanger tube occupies the underground space, there is the advantage achieved many things at one stroke.
Phase-change material brings completion by states of matter change and inhales exothermic process, and the characteristics of because of its high efficiency low cost, the process is extensive
The temporary storage of energy for all trades and professions.Phase change concrete is sealed in the porous medias such as microcapsules, diatomite, haydite
In, the novel aggregate with desirable physical mechanical property can be formed.Phase transformation composite aggregate is incorporated into coagulation by phase change concrete
In soil, suction hydration heat of cement can be reached, the mass concrete heat of hydration is avoided to gather the purpose for generating internal stress.
Conventional energy stake body is made of normal concrete, has the characteristics that thermal conductivity is high, specific heat capacity is low, and soil around pile
Body then exactly in contrast, has the characteristics that thermal conductivity is low, specific heat capacity is high.Therefore, efficiency of thermal transfer is relatively low between stake soil, and heat is difficult
To be fully transferred to pile peripheral earth from pile body heat exchanger tube in time, to reduce the heat exchange efficiency of energy stake.Heat gathers
It also results in a pedosphere surface properties to change, to produce bigger effect bearing capacity of pile.
Therefore, the stake of phase change concrete energy can overcome the shortcomings that normal concrete energy stake and disadvantage, by phase transformation coagulation
Soil is introduced into energy stake design, and the heat exchange efficiency and the lower energy stake long-time bearing energy of Thermal-mechanical Coupling effect of energy stake can be improved
Power is of great significance for the development and popularization of energy stake technology.However, there has been no about phase change concrete energy stake at present
Correlative study data and document, also have no related experiment means and device.
Invention content
Mesh of the present invention is to overcome the shortcomings of existing phase change concrete energy stake research, provides a kind of phase change concrete energy
Measure model test of pile device and its experimental method, a series of researchs can be unfolded to phase change concrete energy stake, to disclose its
Ess-strain mechanism under Thermal-mechanical Coupling effect.
Technical scheme of the present invention：
A kind of phase change concrete energy stake bath scaled model experimental device, including phase change concrete energy stake model 4, cold cycling system
System and measurement system；
The phase change concrete energy stake model 4 is prefabricated pile, and miniature heat-exchange tube 5 is fixed on steel reinforcement cage when pouring
On 17, it is longitudinally arranged along pile body；Fiber-optical grating temperature sensor 3 is also disposed with inside pile body along longitudinal direction and fiber grating strain passes
Sensor 2；Pile crown is provided with load cover board 9, force snesor 11 and transmission rod 12, load and is added on pile crown by transmission rod 12；
The cooling and heating circulation system includes that cold cycling water pump 8, outlet pipe 6 and water inlet pipe 7 form；It is described cold and hot to follow
Ring water pump 8 is connect by outlet pipe 6 and water inlet pipe 7 with phase change concrete energy stake inside micro heat-exchange tube 5, is realized to pile body
Apply the purpose of cold cycling load；
The measurement system includes fiber-optical grating temperature sensor array 1, fiber-optical grating temperature sensor 3, grating light
Fine strain transducer 2, fiber Bragg grating (FBG) demodulator 15, computer 16, displacement meter 10 and force snesor 11；The fiber grating temperature
Degree sensor array is laid in pile peripheral earth 13, measures the change of temperature during cold cycling of pile peripheral earth 13；It is described
Fiber-optical grating temperature sensor 3 inside phase change concrete energy stake model 4 along pile body arrange, measure cold cycling during
Distribution of the temperature along pile body depth；The grating fibers strain transducer 2 is arranged in 4 side of phase change concrete energy stake model
Wall, the change of pile strain during measurement experiment；The fiber Bragg grating (FBG) demodulator 15 respectively with computer 16 and optical fiber light
Gate sensor connects, and reads and record in real time corresponding measurement data；The displacement meter 10 is arranged in pile crown load cover board 9
On, measure phase change concrete energy pile head displacement；The force snesor 11 and transmission rod 12 connect, and measure pile head load.
The phase transformation composite aggregate of different ratio is blended in the concrete of the phase change concrete energy stake model, it is specific to compare
Example is polished according to experiment demand selection, pile body, and different roughness is arranged.
The miniature heat-exchange tube material is preferably polyethylene pipe, and form is U-shaped, W-shaped, dual U-shaped, double W-shaped and spiral
Shape.
The pile peripheral earth is the sand or clay of different water cut, is undisturbed soil or manipulated soil.
A kind of phase change concrete energy stake model experiment method, steps are as follows：
(1) according to experiment demand, suitable miniature heat-exchange tube 5 and steel reinforcement cage 17 are selected, by miniature heat-exchange tube 5 and light
Fine grating temperature sensor 3 is respectively arranged in steel reinforcement cage 13, then prefabricated corresponding phase change concrete energy stake model 4；It will
Pile body is polishing to the roughness needed for experiment, and stake side uses cyano along pile body otch after arranging fiber Bragg grating strain sensor
Ethyl acrylate glue fills, is closed；Phase change concrete energy stake model 4 and fiber-optical grating temperature sensor array 1 are arranged
In pile peripheral earth 13；Placement loads cover board 9, force snesor 11 and transmission rod 12 successively at pile crown；Displacement meter 10 is arranged in
It loads on cover board 9；
(2) water inlet pipe 7 and outlet pipe 6 are connected with the miniature heat-exchange tube 5 in phase change concrete energy stake respectively；It adjusts
Try cold cycling water pump 8；Fiber-optical grating temperature sensor array 1, fiber-optical grating temperature sensor 3, fiber grating strain are passed
Sensor 2 is connected on fiber Bragg grating (FBG) demodulator 15, and (FBG) demodulator is then connected 15 to computer 16, into line sensor and instrument
Debugging；
(3) cold cycling load is applied to phase change concrete energy stake according to planning of experiments；During the experiment, it reads simultaneously
It record pile head load, pile deflection, 13 temperature change of pile peripheral earth, pile body Temperature Distribution, pile strain distribution and cold and hot follows
The real time temperature of ring liquid；
(4) according to the measurement data of record, analysis obtains following relationship：Cold cycling number to pile body stress strain,
The influence of pile side friction, pile shaft force and pile peripheral earth thermal perturbation range；Variety classes and the different water cut soil body pair
The influence of the mechanism of action of lower phase change concrete energy stake is acted in Thermal-mechanical Coupling；Under Thermal-mechanical Coupling effect, different phase transformations are compound
Aggregate matches the influence of the heat exchange efficiency and long-time bearing performance for phase change concrete energy stake；Only SAPMAC method, only thermal cycle
With cold cycling respectively for the influence of the pile crown sedimentation and bearing capacity of phase change concrete energy stake；Pile body temperature when cold cycling
Spend the regularity of distribution.
Beneficial effects of the present invention：By blending the phase transformation composite aggregate of different ratio, phase change concrete energy can be probed into
The optimal value that phase-change material matches in stake；It is miniature by the way that miniature heat-exchange tube is arranged inside phase change concrete energy stake model
Heat-exchange tube is connected with cold cycling water pump, can effectively be controlled pile body temperature, realizes cold cycling；It is set respectively with pile body in stake
Fiber-optical grating temperature sensor and fiber Bragg grating strain sensor are set, pile body temperature and Strain Distribution are can measure；Pile peripheral earth cloth
If array of temperature sensor is, it can be achieved that measurement to pile peripheral earth temperature change value；Force snesor and displacement meter is arranged in pile crown, can
Precision real time measuring and record are carried out to pile head load and displacement.The configuration of the present invention is simple, economic and practical, operability is strong, easily
In realization.
Description of the drawings
Fig. 1 is the general arrangement schematic of the embodiment of the present invention.
Fig. 2 is the cross-sectional view of the phase change concrete energy stake of the embodiment of the present invention.
Fig. 3 is the side schematic view of the phase change concrete energy stake of the embodiment of the present invention.
In figure：1 fiber-optical grating temperature sensor array；2 fiber Bragg grating strain sensors；3 fiber-optical grating temperature sensors；
4 phase change concrete energy stake models；5 miniature heat-exchange tubes；6 outlet pipes；7 water inlet pipes；8 cold cycling water pumps；9 load cover boards；
10 displacement meters；11 force snesors；12 transmission rods；13 pile peripheral earths；14 model casings；15 fiber Bragg grating (FBG) demodulators；16 computers；17
Steel reinforcement cage.
Specific implementation mode
The specific implementation mode of the present invention is described in detail below in conjunction with the accompanying drawings.Protection scope of the present invention is not limited solely to this reality
Apply the description of mode.
It is as shown in Figure 1 the general arrangement schematic of the present invention, including phase change concrete energy stake model 4, cold cycling
System and measurement system.
Phase change concrete energy stake model 4 is prefabricated pile, miniature heat-exchange tube 5 is fixed on steel reinforcement cage when pouring, edge
Pile body is longitudinally arranged；Fiber-optical grating temperature sensor 3 is also disposed with inside pile body along longitudinal direction；Pile crown is provided with load cover board 9, and
It is connected with force snesor 11 and transmission rod 12, load is added to by transmission rod 12 on pile crown.
Cooling and heating circulation system includes that cold cycling water pump 8, outlet pipe 6 and water inlet pipe 7 form.Cold cycling water pump 8 can be made
The hot water or cold water of standby different set temperature passes through outlet pipe 6 and water inlet pipe 7 and phase change concrete energy stake 4 inside micro heat
It exchanges pipe 5 to connect, realizes the purpose of pile body cold cycling.
Measurement system includes fiber-optical grating temperature sensor array 1, fiber-optical grating temperature sensor 3, grating fibers strain
Sensor 2, fiber Bragg grating (FBG) demodulator 15, computer 16, displacement meter 10 and force snesor 11.Fiber-optical grating temperature sensor array
1 is laid in pile peripheral earth 13, can measure the change of temperature during cold cycling of pile peripheral earth 13；Optical fiber grating temperature passes
Point of temperature along pile body depth during pile body arrangement, measurable cold cycling inside phase change concrete energy stake 4 of sensor 3
Cloth；Grating fibers strain transducer 2 is arranged in 4 side wall of phase change concrete energy stake model, can measure experimentation pile and answers
The change of change；Fiber Bragg grating (FBG) demodulator 15 is connect with computer 16 and above-mentioned fiber-optic grating sensor respectively, can read in real time and
Record corresponding measurement data；Displacement meter 10 is arranged on pile crown load cover board, can measure 4 pile crown position of phase change concrete energy stake
It moves；Force snesor 11 and transmission rod 12 connect, and can measure pile head load.
In use, steps are as follows for the particular technique of the present invention：
The first step selects suitable 5 form of miniature heat-exchange tube and steel reinforcement cage 17 according to experiment demand, and miniature heat is handed over
It changes pipe 5 and fiber-optical grating temperature sensor 3 is respectively arranged on 17 suitable position of steel reinforcement cage, then prefabricated corresponding phase transformation is mixed
Solidifying soil energy stake model 4；5 material of miniature heat-exchange tube is preferably polyethylene pipe, and form is U-shaped, W-shaped, dual U-shaped, double W-shaped and spiral shell
It revolves (the present embodiment are selected as U-shaped) such as shapes；Pile body is polishing to the roughness needed for experiment, stria is opened in stake side along pile body, arranges light
After fiber grating strain transducer 2, is filled using cyanacrylate glue, is closed；By 4 He of phase change concrete energy stake model
Fiber-optical grating temperature sensor array 1 is arranged in pile peripheral earth 13；Pile peripheral earth 13 can be the sand of different water cut and glue
Soil can be undisturbed soil and manipulated soil (the present embodiment is dry sand, manipulated soil)；Placement loads cover board 9, force snesor successively at pile crown
11 and transmission rod 12；Displacement meter 10 is arranged on load cover board 9.
Second step, by water inlet pipe 7 and outlet pipe 6 respectively with the miniature heat exchange inside phase change concrete energy stake model 4
Pipe 5 is connected；Debug cold cycling water pump 8；Water inlet pipe 7 and 6 flow velocity of outlet pipe and temperature are configured (this according to experiment demand
Embodiment flow velocity is 2.8L/min, and cryogenic temperature is 3 DEG C, and heating temperature is 50 DEG C)；By fiber-optical grating temperature sensor array 1,
Fiber-optical grating temperature sensor 3, fiber Bragg grating strain sensor 2 are connected on fiber Bragg grating (FBG) demodulator 15, then by (FBG) demodulator
15 are connected on computer 16, into the debugging of line sensor and instrument.
Third walks, and applies cold cycling load to phase change concrete energy stake model 4 according to planning of experiments；In experimentation
In, read and record pile head load, pile deflection, pile peripheral earth temperature change, pile body Temperature Distribution, pile strain distribution and
The real time temperature of cold cycling liquid.
4th step, analysis measure the data obtained, obtain following relationship：Cold cycling number to pile body stress strain, stake
The influence of side friction, pile shaft force and pile peripheral earth thermal perturbation range；Variety classes and the different water cut soil body for
The influence of the mechanism of action of the lower phase change concrete energy stake of Thermal-mechanical Coupling effect；Under Thermal-mechanical Coupling effect, different phase transformation Composite Bones
Influence of the material proportioning for the heat exchange efficiency and long-time bearing performance of phase change concrete energy stake；Only SAPMAC method, only thermal cycle and
Influence of the cold cycling respectively for the pile crown sedimentation and bearing capacity of phase change concrete energy stake；Pile body temperature when cold cycling
Regularity of distribution etc..
Claims (6)
1. a kind of phase change concrete energy stake bath scaled model experimental device, which is characterized in that the phase change concrete energy stake model
Experimental provision includes phase change concrete energy stake model (4), cooling and heating circulation system and measurement system；
The phase change concrete energy stake model (4) is prefabricated pile, and miniature heat-exchange tube (5) is fixed on steel reinforcement cage when pouring
(17) it on, is longitudinally arranged along pile body；It is also disposed with fiber-optical grating temperature sensor (3) along longitudinal direction inside pile body and fiber grating is answered
Become sensor (2)；Pile crown is provided with load cover board (9), force snesor (11) and transmission rod (12), load and passes through transmission rod (2)
It is added on pile crown；
The cooling and heating circulation system includes cold cycling water pump (8), outlet pipe (6) and water inlet pipe (7) composition；Described is cold and hot
Water circulating pump (8) is connect by outlet pipe (6) and water inlet pipe (7) with phase change concrete energy stake inside micro heat-exchange tube (5),
Realize the purpose for applying cold cycling load to pile body；
The measurement system includes fiber-optical grating temperature sensor array (1), fiber-optical grating temperature sensor (3), grating light
Fine strain transducer (2), fiber Bragg grating (FBG) demodulator (15), computer (16), displacement meter (10) and force snesor (11)；Described
Fiber-optical grating temperature sensor array (1) is laid in pile peripheral earth (13), measures pile peripheral earth (13) in cold cycling process
The change of middle temperature；The fine grating temperature sensor (3) of the light is internal along pile body cloth in phase change concrete energy stake model (4)
It sets, distribution of the temperature along pile body depth during measurement cold cycling；The grating fibers strain transducer (2) is arranged in phase
Become concrete energy stake model (4) side wall, the change of pile strain during measurement experiment；The fiber Bragg grating (FBG) demodulator
(15) it is connect respectively with computer (16) and fiber-optic grating sensor, reads and record corresponding measurement data in real time；Described
Displacement meter (10) is arranged on pile crown load cover board (9), measures phase change concrete energy pile head displacement；The force snesor
(11) it is connected with transmission rod (12), measures pile head load.
2. phase change concrete energy stake bath scaled model experimental device according to claim 1, which is characterized in that the phase transformation is mixed
The phase transformation composite aggregate of different ratio is blended in the concrete of solidifying soil energy stake model, specific ratio is selected according to experiment demand,
Pile body is polished, and different roughness is arranged.
3. phase change concrete energy stake bath scaled model experimental device according to claim 1 or 2, which is characterized in that described is micro-
Type heat-exchange tube material is preferably polyethylene pipe, and form is U-shaped, W-shaped, dual U-shaped, double W-shaped and spiral shape.
4. phase change concrete energy stake bath scaled model experimental device according to claim 1 or 2, which is characterized in that the stake
Zhou Tuti is the sand or clay of different water cut, is undisturbed soil or manipulated soil.
5. phase change concrete energy stake bath scaled model experimental device according to claim 3, which is characterized in that the soil around pile
Body is the sand or clay of different water cut, is undisturbed soil or manipulated soil.
6. a kind of phase change concrete energy stake model experiment method, which is characterized in that steps are as follows：
1) according to experiment demand, suitable miniature heat-exchange tube (5) and steel reinforcement cage (17) are selected, by miniature heat-exchange tube (5) and
Fiber-optical grating temperature sensor (3) is respectively arranged in steel reinforcement cage (13), then prefabricated corresponding phase change concrete energy stake mould
Type (4)；Pile body is polishing to the roughness needed for experiment, stake side is along pile body otch, after arranging fiber Bragg grating strain sensor,
It is filled using cyanacrylate glue, is closed；By phase change concrete energy stake model (4) and fiber-optical grating temperature sensor
Array (1) is arranged in pile peripheral earth (13)；Placement loads cover board (9), force snesor (11) and transmission rod successively at pile crown
(12)；Displacement meter (10) is arranged on load cover board (9)；
2) water inlet pipe (7) and outlet pipe (6) are connected with the miniature heat-exchange tube (5) in phase change concrete energy stake respectively；
Debug cold cycling water pump (8)；By fiber-optical grating temperature sensor array (1), fiber-optical grating temperature sensor (3), optical fiber light
Grid strain transducer (2) is connected on fiber Bragg grating (FBG) demodulator (15), then arrives (FBG) demodulator connection (15) on computer (16),
Into the debugging of line sensor and instrument；
3) cold cycling load is applied to phase change concrete energy stake according to planning of experiments；During the experiment, it reads and records
Pile head load, pile deflection, pile peripheral earth (13) temperature change, pile body Temperature Distribution, pile strain distribution and cold cycling
The real time temperature of liquid；
4) according to the measurement data of record, analysis obtains following relationship：Cold cycling number rubs to pile body stress strain, stake side
The influence of resistance, pile shaft force and pile peripheral earth thermal perturbation range；Variety classes and the different water cut soil body are for heating power
The influence of the mechanism of action of phase change concrete energy stake under coupling；Under Thermal-mechanical Coupling effect, different phase transformation composite aggregates are matched
Than the influence of heat exchange efficiency and long-time bearing performance for phase change concrete energy stake；Only SAPMAC method, only thermal cycle and cold and hot
Recycle the influence of the pile crown sedimentation and bearing capacity respectively for phase change concrete energy stake；Pile body Temperature Distribution when cold cycling
Rule.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810090665.4A CN108318324A (en) | 2018-01-27 | 2018-01-27 | A kind of phase change concrete energy stake bath scaled model experimental device and its experimental method |
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| CN201810090665.4A CN108318324A (en) | 2018-01-27 | 2018-01-27 | A kind of phase change concrete energy stake bath scaled model experimental device and its experimental method |
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Cited By (2)
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