CN116556439B - Cold region high water level precast pile ice damage loading test device - Google Patents
Cold region high water level precast pile ice damage loading test device Download PDFInfo
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- CN116556439B CN116556439B CN202310533094.8A CN202310533094A CN116556439B CN 116556439 B CN116556439 B CN 116556439B CN 202310533094 A CN202310533094 A CN 202310533094A CN 116556439 B CN116556439 B CN 116556439B
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 111
- 238000012360 testing method Methods 0.000 title claims abstract description 28
- 238000004088 simulation Methods 0.000 claims abstract description 115
- 238000012544 monitoring process Methods 0.000 claims abstract description 24
- 230000001105 regulatory effect Effects 0.000 claims abstract description 10
- 239000002689 soil Substances 0.000 claims description 37
- 238000006073 displacement reaction Methods 0.000 claims description 9
- 238000012806 monitoring device Methods 0.000 claims description 9
- 239000004576 sand Substances 0.000 claims description 9
- 238000002474 experimental method Methods 0.000 claims description 8
- 238000005286 illumination Methods 0.000 claims description 8
- 238000005192 partition Methods 0.000 claims description 6
- 239000004575 stone Substances 0.000 claims description 6
- 229920006327 polystyrene foam Polymers 0.000 claims description 5
- 230000005540 biological transmission Effects 0.000 claims description 3
- 208000002925 dental caries Diseases 0.000 description 5
- 230000004888 barrier function Effects 0.000 description 4
- 238000005056 compaction Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 239000012528 membrane Substances 0.000 description 3
- 238000013461 design Methods 0.000 description 2
- 230000001066 destructive effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000002955 isolation Methods 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 238000005429 filling process Methods 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
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- 229920006395 saturated elastomer Polymers 0.000 description 1
- 238000009738 saturating Methods 0.000 description 1
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- 238000000926 separation method Methods 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000013519 translation Methods 0.000 description 1
Classifications
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D33/00—Testing foundations or foundation structures
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/22—Piles
- E02D5/24—Prefabricated piles
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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
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
-
- 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
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
- G01N3/18—Performing tests at high or low temperatures
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2600/00—Miscellaneous
- E02D2600/10—Miscellaneous comprising sensor means
-
- 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
- G01N2203/0676—Force, weight, load, energy, speed or acceleration
Abstract
The invention discloses an ice damage loading test device for a high-water-level precast pile in a cold region, which comprises a simulation box body; the environment simulation system comprises a foundation assembly and a water supply assembly, wherein the foundation assembly is paved at the bottom end inside the simulation box body, a precast pile experimental body is pre-buried at the top end of the foundation assembly, and a water level adjusting assembly is arranged on the simulation box body; the temperature simulation system comprises a temperature adjusting component which is fixedly connected to the simulation box body and is arranged corresponding to the water supply component; the data monitoring system comprises a monitoring component fixedly connected to the simulation box body, and the foundation component, the water supply component and the temperature regulating component are respectively and correspondingly arranged with the monitoring component. According to the invention, through simulating the test of loading ice damage to the precast pile by the ice load in the alpine region under the natural environment test, the simulation test of the ice block structure to the precast pile under different conditions such as sunlight length, water depth of each point or ice thickness is realized, and the accuracy of test data is ensured.
Description
Technical Field
The invention relates to the technical field of simulation test devices, in particular to a cold region high water level precast pile ice damage loading test device.
Background
In order to avoid changing the morphology of the landform and reduce the influence on ecological damage, precast piles are often adopted in high-water-level photovoltaic projects such as a photovoltaic hydraulic energy storage power station, a fishing light integrated station and the like. Pile foundations due to static ice pressure topples, even shearing events, sometimes occur.
The high water level photovoltaic foundation in cold areas generally adopts precast piles with the pile diameter of 300mm, and is often arranged in reservoirs, lakes and marsh lands, and the static ice load is mostly temperature expansion force by considering the characteristics of the physical climate and climate of the region where the precast piles are positioned. The temperature expansion force of ice is closely related to the factors such as the shape, rigidity, materials, constraint boundary conditions of the structure on the ice, ice temperature, temperature change rate, temperature change time course and the like. Deformation bending, translation and vibration generated by the precast pile depend on the acting force of ice on the precast pile, in particular on the limit pressure generated by the breaking of the ice in action, and analysis of the acting force is important to ensure the safety and stability of the pile foundation. One of the fundamental tasks that is thus performed in the field of ice and structure interactions is to determine the destructive power of ice when interacting with a structure. The destructive power of ice provides the basic parameters of design for the load bearing of the structure and boundary conditions and initial conditions for the calculation of the safety and stability of the structure.
In the prior art, a test device for the precast pile aiming at ice load is not available, and a simulation test for the influence of the ice load on the precast pile cannot be performed.
Therefore, there is a need for an ice damage loading test device for a high water level precast pile in a cold region, which is used for solving the above problems.
Disclosure of Invention
The invention aims to provide an ice damage loading test device for a high-water-level precast pile in a cold region, so as to solve the problems in the prior art.
In order to achieve the above object, the present invention provides the following solutions: the invention provides an ice damage loading test device for a cold region high water level precast pile, which comprises the following components:
simulating a box body;
the environment simulation system comprises a foundation assembly and a water supply assembly, wherein the foundation assembly is paved at the bottom end in the simulation box body, a precast pile experimental body is pre-buried at the top end of the foundation assembly, the water supply assembly is used for supplying water to the foundation assembly and the simulation box body, a water level adjusting assembly is arranged on the simulation box body, and the water level adjusting assembly is correspondingly arranged with the water supply assembly;
the temperature simulation system comprises a temperature adjusting component which is fixedly connected to the simulation box body and is arranged corresponding to the water supply component;
the data monitoring system comprises a monitoring component fixedly connected to the simulation box body, and the foundation component, the water supply component and the temperature regulating component are respectively and correspondingly arranged with the monitoring component.
Preferably, the foundation assembly comprises a broken stone simulation layer, a coarse sand simulation layer and a thick soil simulation layer which are paved from bottom to top respectively, the precast pile experimental body is installed in the middle of the top end of the thick soil simulation layer, and the broken stone simulation layer, the coarse sand simulation layer and the thick soil simulation layer are arranged corresponding to the water supply assembly respectively.
Preferably, the water supply assembly comprises a partition and a water supply piece, the partition comprises an annular support fixedly connected to the inner wall of the simulation box body, an annular chute is formed in the inner wall of the annular support, a plurality of connecting blocks are slidably connected to the annular chute at equal intervals along the circumferential direction, one ends of isolating membranes are fixedly connected to the connecting blocks, the other ends of the isolating membranes are correspondingly arranged on the outer side wall of the precast pile experiment body, the isolating membranes divide the simulation box body into a plurality of cavities, the cavities are internally provided with gravel simulation layers, coarse sand simulation layers and thick soil simulation layers respectively, and the cavities are correspondingly communicated with the water supply piece respectively.
Preferably, the water supply piece includes fixed connection annular storage water tank on the simulation box lateral wall, separate into a plurality of water storage cavities that the size equals through a plurality of division boards in the annular storage water tank, sliding connection has the holding tank in the water storage cavity, holding tank bottom fixed intercommunication has the one end of pipeline, a plurality of water supply pipelines have been seted up along circumference equidistant to simulation box lateral wall bottom, a plurality of water supply pipelines respectively with a plurality of cavity intercommunication, the pipeline other end with water supply pipeline can dismantle the connection, be provided with the regulating part in the water storage cavity, the holding tank with the regulating part transmission is connected.
Preferably, the regulating part comprises a threaded rod which is rotationally connected with two ends in the water storage cavity, the storage groove is in threaded connection with the threaded rod, a worm wheel is fixedly connected with the bottom of the threaded rod coaxially, a worm is rotationally connected with the water storage cavity, the worm wheel is meshed with the worm, a plurality of driving motors are fixedly connected to the outer side wall of the annular water storage tank, and an output shaft of each driving motor is fixedly connected with one end of the worm.
Preferably, the temperature simulation system comprises a simulation box cover body fixedly connected to the top end of the simulation box body, a refrigerating device and an illumination simulation device are fixedly connected to the simulation box cover body, and the refrigerating device and the illumination simulation device are respectively and correspondingly arranged in the simulation box body.
Preferably, the data monitoring system comprises a displacement sensor device, a pressure sensor device and a temperature monitoring device, wherein the monitoring ends of the displacement sensor device and the pressure sensor device are respectively arranged corresponding to the precast pile experimental body, and the monitoring ends of the temperature monitoring device extend into the cavity.
Preferably, an outer protection plate is stuck on the outer side wall of the simulation box body, and the outer protection plate is a polystyrene foam plate.
Preferably, the thick soil simulation layer is formed by filling a plurality of soil layers in layers, the thickness of each soil layer is 0.04-0.05m, and the density of each soil layer is 1.4-1.5g/cm 3 。
Preferably, the diameter of the precast pile experimental body is 49mm-51mm, and the embedded depth is 300mm-400mm.
Compared with the prior art, the invention has the following advantages and technical effects:
according to the ice damage loading test device for the prefabricated pile in the cold region, provided by the invention, through simulating the test of the ice damage loading of the prefabricated pile by the ice load in the alpine region under the environment test in the natural world, the simulation test of the ice block structure on the prefabricated pile under different conditions such as sunlight length, water depth of each point or ice thickness is realized, and the accuracy of test data is ensured.
Drawings
For a clearer description of an embodiment of the invention or of the solutions of the prior art, the drawings that are needed in the embodiment will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art:
FIG. 1 is a schematic view of the internal structure of a simulation box according to the present invention;
FIG. 2 is a schematic view of a water supply assembly according to the present invention;
1, simulating a box body; 2. precast pile experimental body; 3. a macadam simulation layer; 4. a coarse sand simulation layer; 5. a thick soil simulation layer; 6. an annular bracket; 7. an annular chute; 8. a connecting block; 9. a separation film; 10. a cavity; 11. a ring-shaped water storage tank; 12. a partition plate; 13. a water storage chamber; 14. a storage tank; 15. a delivery conduit; 16. a water supply pipe; 17. a threaded rod; 18. a worm wheel; 19. a worm; 20. a driving motor; 21. a simulation box cover body; 22. a refrigerating device; 23. an illumination simulation device; 24. a motion sensor device; 25. a pressure sensor device; 26. a temperature monitoring device; 27. and an outer layer protection plate.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In order that the above-recited objects, features and advantages of the present invention will become more readily apparent, a more particular description of the invention will be rendered by reference to the appended drawings and appended detailed description.
Referring to fig. 1-2, the invention provides an ice damage loading test device for a cold region high water level precast pile, comprising:
a simulation box 1;
the environment simulation system comprises a foundation assembly and a water supply assembly, wherein the foundation assembly is paved at the bottom end inside the simulation box body 1, a precast pile experiment body 2 is pre-buried at the top end of the foundation assembly, the water supply assembly is used for supplying water into the foundation assembly and the simulation box body 1, the simulation box body 1 is provided with a water level adjusting assembly, and the water level adjusting assembly is correspondingly arranged with the water supply assembly;
the temperature simulation system comprises a temperature adjusting component which is fixedly connected to the simulation box body 1 and is arranged corresponding to the water supply component;
the data monitoring system comprises a monitoring component fixedly connected to the simulation box body 1, and a foundation component, a water supply component and a temperature adjusting component are respectively and correspondingly arranged with the monitoring component.
Further optimizing scheme, foundation assembly includes from supreme rubble analog layer 3, coarse sand analog layer 4 and the thick soil analog layer 5 of laying respectively down, and precast pile experiment body 2 is installed at thick soil analog layer 5 top middle part, and rubble analog layer 3, coarse sand analog layer 4 and thick soil analog layer 5 correspond the setting with water supply assembly respectively.
The simulation box body 1 is internally paved with a 50mm broken stone simulation layer 3, a 30mm coarse sand simulation layer 4 and a 20mm thick soil simulation layer 5 from bottom to top respectively, water is injected from the simulation box body 1, and the foundation is saturated after the foundation is filled.
Further optimizing scheme, water supply assembly includes separator and water supply piece, the separator includes ring support 6 of fixed connection on simulation box 1 inner wall, annular spout 7 has been seted up on the ring support 6 inner wall, equidistant sliding connection has a plurality of connecting blocks 8 along circumference in the annular spout 7, fixedly connected with barrier film 9's one end on the connecting block 8, the other end of a plurality of barrier films 9 corresponds the setting with precast pile experiment body 2 lateral wall, a plurality of barrier films 9 divide into a plurality of cavitys 10 in with simulation box 1, be provided with rubble simulation layer 3 in a plurality of cavitys 10 respectively, coarse sand simulation layer 4 and thick soil simulation layer 5, a plurality of cavitys 10 correspond the intercommunication with water supply piece respectively.
Through the isolation of the isolation barrier 9 realization water that sets up, through the water supply piece to the water of a plurality of cavitys 10 intussuseptions of filling equal altitude, realize the simulation experiment on the same horizon, through the surface of water of filling different co-altitude, realize the simulation realization on the different co-altitude horizon in same place to the ice damage simulation of ice load to the embedded pile under the experimental nature of more accuracy guarantees the accuracy of data.
Further optimizing scheme, the water supply piece includes annular storage water tank 11 of fixed connection on simulation box 1 lateral wall, divide into a plurality of water storage cavities 13 that the size equals through a plurality of division boards 12 in the annular storage water tank 11, sliding connection has holding tank 14 in the water storage cavity 13, holding tank 14 bottom fixed intercommunication has the one end of pipeline 15, a plurality of water supply pipelines 16 have been seted up along circumference equidistant to simulation box 1 lateral wall bottom, a plurality of water supply pipelines 16 communicate with a plurality of cavitys 10 respectively, the pipeline 15 other end can dismantle with water supply pipeline 16 and be connected, be provided with the regulating part in the water storage cavity 13, holding tank 14 is connected with the regulating part transmission.
The annular water storage tank 11 is internally provided with a plurality of storage tanks 14 which are respectively arranged corresponding to the cavity 10 in the simulation box body 1, the storage tanks 14 and the cavity form a U-shaped structure, the storage tanks 14 are consistent with the water surface height in the cavity 10, and the lifting of the storage tanks 14 is controlled through the adjusting piece, so that the water surface height in the cavity 10 is controlled, and the storage tanks 14 realize the adjustment of different water surface heights.
Further optimizing scheme, the regulating part is including rotating the threaded rod 17 of connecting in the water storage cavity 13 both ends, and holding tank 14 and threaded rod 17 threaded connection, the coaxial fixedly connected with worm wheel 18 of threaded rod 17 bottom, and the internal rotation of water storage cavity 13 is connected with worm 19, and worm wheel 18 and worm 19 meshing are fixedly connected with a plurality of driving motor 20 on the lateral wall of annular water storage tank 11, and driving motor 20's output shaft and worm 19 one end fixed connection.
The worm 19 is driven to rotate by the driving motor 20, and the worm 19 drives the worm wheel 18 to rotate, so that the control of the threaded rod 17 is realized, the height of the storage groove 14 is controlled, and the adjustment of different water depths is realized.
Further optimizing scheme, temperature simulation system includes the simulation box cover body 21 of fixed connection on simulation box body 1 top, fixedly connected with refrigerating plant 22 and illumination analogue means 23 on the simulation box cover body 21, refrigerating plant 22 and illumination analogue means 23 respectively with the inside corresponding setting of simulation box body 1.
The refrigerating device 22 is used for simulating a low-temperature environment in the nature, so that water is gradually frozen, and the illumination simulating device 23 adopts a light lamp and is used for simulating the condition of sunlight irradiation in the nature.
Further optimizing scheme, the data monitoring system includes displacement sensor device 24, pressure sensor device 25 and temperature monitoring device 26, and the monitoring end of displacement sensor device 24 and pressure sensor device 25 corresponds the setting with precast pile experiment body 2 respectively, and the monitoring end of temperature monitoring device 26 stretches into in the cavity 10.
The displacement sensor device 24 is used for monitoring the displacement of precast pile experiment body 2, the pressure sensor device 25 is used for monitoring the pressure that pressure sensor device 25 received, when water freezes into ice and can expand, simultaneously ice is at the temperature-rising in-process, the volume can expand equally, be used for monitoring the change of ice temperature through setting up temperature monitoring device 26, thereby guarantee the accurate of data, concrete displacement sensor device 24 adopts moment of flexure foil gauge, pressure sensor device adopts soil pressure sensor and pore water pressure sensor, temperature monitoring device 26 adopts temperature sensor, above-mentioned all is prior art, concrete specification model is selected according to actual demand by skilled in the art, do not do specifically prescribe a limit to here.
Further optimizing scheme has outer guard plate 27 to paste on the simulation box 1 lateral wall, and outer guard plate 27 is polystyrene foam board.
The inner diameter of the simulation box body 1 is 600mm, the depth is 800mm, the steel is made, a polystyrene foam plate is stuck on the outer layer of the polystyrene foam plate with the thickness of 120mm, and therefore the boundary effect is ignored.
Further optimizing scheme, the thick soil simulation layer 5 is formed by filling a plurality of soil layers in layers, the thickness of each soil layer is 0.04-0.05m, and the density of the soil layer is 1.4-1.5g/cm 3 。
The compaction mode of the thick soil simulation layer 5 adopts a small-sized compactor to compact. In the filling process, dry density is used as a control index, and the filling soil is used for controlling the dry density to be 1.5g/cm 3 . And (3) performing pressure test before formal filling, pouring the weighed soil into the simulation box body 1, and tamping for 6 times. And (3) each time of compaction is carried out for 1 time, 3 different points are selected, the density of the soil body after compaction is measured by adopting a ring cutter method, and proper compaction times are selected according to the control density. When formally filling the soil, the ring cutting method is adopted to measure the density of soil bodies at 3 different positions when 1 layer of filling is completedThe measured average density of 3 points meets the requirement, and the layer of soil is qualified by filling when the density difference between every two points is less than 5%. Then scraping the surface of the soil layer, and filling the soil of the next layer.
And (5) saturating the foundation after the foundation soil is filled. By adjusting the height of the storage tank 14, the saturation rate was controlled to be 0.3m 3 Day. The saturation of the foundation reaches more than 95%, and the saturation process is finished.
Further optimizing scheme, the diameter of precast pile experiment body 2 is 49mm-51mm, and pre-buried degree of depth is 300mm-400mm.
The diameter of the precast pile experimental body 2 is selected to be 50mm, the proportion of the whole simulation test is guaranteed according to the size of the simulation box body 1, the influence of ice load on the precast pile in a more accurate simulation reality environment is guaranteed, and the accuracy of data is guaranteed.
In the description of the present invention, it should be understood that the terms "longitudinal," "transverse," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate description of the present invention, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present invention.
The above embodiments are only illustrative of the preferred embodiments of the present invention and are not intended to limit the scope of the present invention, and various modifications and improvements made by those skilled in the art to the technical solutions of the present invention should fall within the protection scope defined by the claims of the present invention without departing from the design spirit of the present invention.
Claims (6)
1. The utility model provides a cold region high water level precast pile ice damage load test device which characterized in that includes:
a simulation box body (1);
the environment simulation system comprises a foundation assembly and a water supply assembly, wherein the foundation assembly is paved at the bottom end inside the simulation box body (1), a precast pile experiment body (2) is pre-buried at the top end of the foundation assembly, the water supply assembly is used for supplying water into the foundation assembly and the simulation box body (1), a water level adjusting assembly is arranged on the simulation box body (1), and the water level adjusting assembly is correspondingly arranged with the water supply assembly;
the temperature simulation system comprises a temperature regulation component which is fixedly connected to the simulation box body (1) and is arranged corresponding to the water supply component;
the data monitoring system comprises a monitoring component fixedly connected to the simulation box body (1), and the foundation component, the water supply component and the temperature regulating component are respectively arranged corresponding to the monitoring component;
the foundation assembly comprises a broken stone simulation layer (3), a coarse sand simulation layer (4) and a thick soil simulation layer (5) which are paved from bottom to top respectively, the precast pile experimental body (2) is installed in the middle of the top end of the thick soil simulation layer (5), and the broken stone simulation layer (3), the coarse sand simulation layer (4) and the thick soil simulation layer (5) are respectively and correspondingly arranged with the water supply assembly;
the water supply assembly comprises a partition piece and a water supply piece, wherein the partition piece comprises an annular bracket (6) fixedly connected to the inner wall of the simulation box body (1), an annular chute (7) is formed in the inner wall of the annular bracket (6), a plurality of connecting blocks (8) are slidably connected in the annular chute (7) at equal intervals along the circumferential direction, one ends of isolating films (9) are fixedly connected to the connecting blocks (8), the other ends of the isolating films (9) are correspondingly arranged on the outer side wall of the precast pile experimental body (2), the isolating films (9) divide the simulation box body (1) into a plurality of cavities (10), the broken stone simulation layers (3), coarse sand simulation layers (4) and thick soil simulation layers (5) are respectively arranged in the cavities (10), and the cavities (10) are correspondingly communicated with the water supply piece respectively;
the water supply part comprises an annular water storage tank (11) fixedly connected to the outer side wall of the simulation box body (1), the annular water storage tank (11) is internally divided into a plurality of water storage cavities (13) with the same size by a plurality of partition boards (12), a storage groove (14) is slidably connected in the water storage cavities (13), one end of a conveying pipeline (15) is fixedly communicated with the bottom end of the storage groove (14), a plurality of water supply pipelines (16) are circumferentially and equidistantly arranged at the bottom of the outer side wall of the simulation box body (1), the water supply pipelines (16) are respectively communicated with a plurality of cavities (10), the other ends of the conveying pipelines (15) are detachably connected with the water supply pipelines (16), and an adjusting part is arranged in the water storage cavities (13), and the storage groove (14) is in transmission connection with the adjusting part;
the regulating part comprises a threaded rod (17) which is rotationally connected to the inner end of the water storage cavity (13), the storage groove (14) is in threaded connection with the threaded rod (17), a worm wheel (18) is fixedly connected to the bottom of the threaded rod (17), a worm (19) is rotationally connected to the water storage cavity (13), the worm wheel (18) is meshed with the worm (19), a plurality of driving motors (20) are fixedly connected to the outer side wall of the annular water storage tank (11), and an output shaft of each driving motor (20) is fixedly connected to one end of each worm (19).
2. The cold region high water level precast pile ice damage loading test device according to claim 1, wherein: the temperature simulation system comprises a simulation box cover body (21) fixedly connected to the top end of the simulation box body (1), a refrigerating device (22) and an illumination simulation device (23) are fixedly connected to the simulation box cover body (21), and the refrigerating device (22) and the illumination simulation device (23) are respectively and correspondingly arranged inside the simulation box body (1).
3. The cold region high water level precast pile ice damage loading test device according to claim 1, wherein: the data monitoring system comprises a displacement sensor device (24), a pressure sensor device (25) and a temperature monitoring device (26), wherein monitoring ends of the displacement sensor device (24) and the pressure sensor device (25) are respectively arranged corresponding to the precast pile experimental body (2), and monitoring ends of the temperature monitoring device (26) extend into the cavity (10).
4. The cold region high water level precast pile ice damage loading test device according to claim 1, wherein: an outer protection plate (27) is stuck on the outer side wall of the simulation box body (1), and the outer protection plate (27) is a polystyrene foam plate.
5. The cold region high water level precast pile ice damage loading test device according to claim 1, wherein: the thick soil simulation layer (5) is formed by filling a plurality of soil layers in layers, the thickness of each soil layer is 0.04-0.05m, and the density of the soil layer is 1.4-1.5g/cm 3 。
6. The cold region high water level precast pile ice damage loading test device according to claim 5, wherein: the diameter of the precast pile experimental body (2) is 49-51 mm, and the embedded depth is 300-400 mm.
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| CN202310533094.8A CN116556439B (en) | 2023-05-11 | 2023-05-11 | Cold region high water level precast pile ice damage loading test device |
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| CN202310533094.8A CN116556439B (en) | 2023-05-11 | 2023-05-11 | Cold region high water level precast pile ice damage loading test device |
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| CN116556439B true CN116556439B (en) | 2024-01-05 |
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| CN114755092A (en) * | 2022-03-23 | 2022-07-15 | 哈尔滨商业大学 | Special device and method for seasonal frozen soil indoor test |
| CN115480049A (en) * | 2022-10-11 | 2022-12-16 | 山东大学 | Roadbed accumulated deformation simulation test system with full service environment and traffic load effect |
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| US10060898B2 (en) * | 2017-03-07 | 2018-08-28 | Ramesh Chandra Gupta | Expandable jacket for triaxial, unconfined and uniaxial compression tests and test device for three-dimensional consolidation and settlement tests |
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