CN111912721A - Test system for simulating horizontal load reaction of engineering structure foundation in frozen soil environment - Google Patents
Test system for simulating horizontal load reaction of engineering structure foundation in frozen soil environment Download PDFInfo
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- CN111912721A CN111912721A CN202010921424.7A CN202010921424A CN111912721A CN 111912721 A CN111912721 A CN 111912721A CN 202010921424 A CN202010921424 A CN 202010921424A CN 111912721 A CN111912721 A CN 111912721A
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- 238000012360 testing method Methods 0.000 title claims abstract description 90
- 239000002689 soil Substances 0.000 title claims abstract description 88
- 238000006243 chemical reaction Methods 0.000 title claims abstract description 29
- 238000001816 cooling Methods 0.000 claims abstract description 39
- 238000000034 method Methods 0.000 claims abstract description 17
- 230000008569 process Effects 0.000 claims abstract description 13
- 238000007710 freezing Methods 0.000 claims abstract description 10
- 230000008014 freezing Effects 0.000 claims abstract description 10
- 229920000742 Cotton Polymers 0.000 claims description 16
- 238000005057 refrigeration Methods 0.000 claims description 16
- 239000000110 cooling liquid Substances 0.000 claims description 11
- 238000004321 preservation Methods 0.000 claims description 10
- 229910000831 Steel Inorganic materials 0.000 claims description 9
- 238000009413 insulation Methods 0.000 claims description 9
- 239000007788 liquid Substances 0.000 claims description 9
- 239000010959 steel Substances 0.000 claims description 9
- 238000004873 anchoring Methods 0.000 claims description 4
- 230000004044 response Effects 0.000 claims description 4
- 230000007613 environmental effect Effects 0.000 claims description 2
- 230000002787 reinforcement Effects 0.000 claims description 2
- 238000005096 rolling process Methods 0.000 claims 1
- 230000005476 size effect Effects 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 5
- 230000007547 defect Effects 0.000 abstract description 2
- 239000012530 fluid Substances 0.000 abstract description 2
- 239000012774 insulation material Substances 0.000 abstract description 2
- 230000001360 synchronised effect Effects 0.000 abstract description 2
- 238000011160 research Methods 0.000 description 13
- 230000009471 action Effects 0.000 description 6
- 238000006073 displacement reaction Methods 0.000 description 4
- 230000003993 interaction Effects 0.000 description 4
- 230000007246 mechanism Effects 0.000 description 4
- 230000001932 seasonal effect Effects 0.000 description 4
- 238000010276 construction Methods 0.000 description 2
- 230000035945 sensitivity Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000036760 body temperature Effects 0.000 description 1
- 238000013500 data storage Methods 0.000 description 1
- 238000007726 management method Methods 0.000 description 1
- 238000011946 reduction process Methods 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
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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
- G01N3/18—Performing tests at high or low temperatures
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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
- G01N3/02—Details
- G01N3/04—Chucks
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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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- 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
- G01N2203/025—Geometry of the test
- G01N2203/0252—Monoaxial, i.e. the forces being applied along a single axis of the specimen
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Abstract
The invention relates to a test system capable of being used for simulating horizontal load reaction of an engineering structure foundation in a frozen soil environment. The method is characterized in that: the cooling and freezing of the soil body are realized through the circulation of the refrigerating fluid between the cooling pipe arranged in the soil body and the external refrigerating equipment, and the frozen soil environment can be effectively simulated. The combined type box body with the large volume and the large size is adopted, a plurality of measuring points of the sensor can be arranged in the box body, the defects that the existing model test is small in soil sample size and limited in test system function are effectively overcome, the combined type box body has the splitting and combining functions, the moving and the transporting are convenient, and the indoor model test efficiency is effectively improved. The invention can realize horizontal and vertical synchronous loading, and can effectively simulate larger upper structure weight by vertical loading through the ground anchor. The heat insulation material arranged in the test box body can reduce the heat loss in the box body, improve the cooling and freezing effects and effectively reduce the size and boundary effect in the model test process.
Description
Technical Field
The invention relates to the technical field of engineering structure foundation horizontal load reaction tests, in particular to a test system capable of simulating engineering structure foundation horizontal load reaction in a frozen soil environment, which can effectively simulate various frozen soil environments including seasonal frozen soil and permafrost and test the horizontal load reaction of various engineering structure foundations in the frozen soil environment.
Background
The frozen soil is widely distributed in China, the area of seasonal frozen soil (including seasonal frozen soil with freezing depth of more than 0.45 m) and perennial frozen soil accounts for about 70% of the total area of China, and the frozen soil covers the whole area in western regions of China in particular. The construction of infrastructures including roads and railways continuously extends to the western frozen soil area in China, and the existence of the frozen soil mainly influences the load reaction of the engineering structure foundation. Therefore, the load reaction and the engineering stability of the engineering structure foundation in the frozen soil environment are gradually concerned by the industry. Under the action of general loads, the vertical load reaction of the engineering structure foundation is mainly concerned, and under the action of special loads, such as earthquake, the horizontal load reaction of the engineering structure foundation is extremely important. The research of horizontal dynamic test of model pile foundation under freeze-thaw condition published in 'rock and soil mechanics' by li Yongbo et al in 2012 shows that the characteristics of load-displacement relationship and the like of the engineering structure foundation under the action of horizontal load in the frozen soil environment and the fused soil environment have obvious difference, and even the engineering structure located in the same frozen soil field has larger difference of stress characteristics under the action of different loads in different seasons. At present, the research on the vertical load reaction of the engineering structure foundation in the frozen soil environment is more, and the research on the horizontal load reaction is lacked, so that the research on the horizontal load reaction of the engineering structure foundation-frozen soil system is very necessary and urgent under the background of large-scale engineering construction in the frozen soil area.
The stress process of an engineering structure foundation-frozen soil system under the action of horizontal load is an extremely complex problem, at present, few researches on the stress process at home and abroad are carried out, and related theoretical supports are lacked, so that experimental researches are still important methods for searching the interaction mechanism of the frozen soil-foundation, wherein the experimental researches comprise outdoor prototype or large-scale tests and indoor scale model tests. Although the stress performance of the structure foundation of the test site can be accurately reflected in the outdoor test, the outdoor test is limited by the problems of high cost, long test period, difficulty in controlling the influence parameter factors, test site conditions and the like, and is difficult to popularize and use in a large range. And the indoor scale model test is widely applied due to the advantages of low cost, high efficiency, controllable conditions and the like. Frozen soil has temperature sensitivity, and most of indoor scale model tests aiming at large engineering structure foundations at present lack effective temperature control measures, so that the traditional test device can not accurately simulate the frozen soil environment, and the development of the indoor model test research of the engineering structure foundations in the frozen soil area is seriously lagged. Therefore, the test system capable of testing various reaction characteristics of the engineering structure foundation under the horizontal load in the frozen soil environment has very important significance for deeply researching the damage characteristics of the engineering structure foundation in the frozen soil area under the horizontal load and the interaction mechanism of the foundation and the frozen soil.
The stress process of an engineering structure foundation-frozen soil system under the action of horizontal load is an extremely complex problem, at present, few researches on the stress process at home and abroad are carried out, and related theoretical supports are lacked, so that experimental researches are still important methods for searching the interaction mechanism of the frozen soil-foundation, wherein the experimental researches comprise outdoor prototype or large-scale tests and indoor scale model tests. Although the stress performance of the structure foundation of the test site can be accurately reflected in the outdoor test, the outdoor test is limited by the problems of high cost, long test period, difficulty in controlling the influence parameter factors, test site conditions and the like, and is difficult to popularize and use in a large range. And the indoor scale model test is widely applied due to the advantages of low cost, high efficiency, controllable conditions and the like. Frozen soil has temperature sensitivity, and most of indoor scale model tests aiming at large engineering structure foundations at present lack effective temperature control measures, so that the traditional test device can not accurately simulate the frozen soil environment, and the development of the indoor model test research of the engineering structure foundations in the frozen soil area is seriously lagged. Therefore, the test system capable of testing various reaction characteristics of the engineering structure foundation under the horizontal load in the frozen soil environment has very important significance for deeply researching the damage characteristics of the engineering structure foundation in the frozen soil area under the horizontal load and the interaction mechanism of the foundation and the frozen soil.
Disclosure of Invention
In order to realize accurate temperature control and facilitate the horizontal load reaction test research of the engineering structure foundation in the frozen soil environment, the invention aims to provide a test system which can be used for simulating the horizontal load reaction of the engineering structure foundation in the frozen soil environment. The system can test various reaction values of the structure foundation under the frozen soil environment under the horizontal load, including the variables of soil body temperature, soil pressure, foundation strain and the like, and the data storage and acquisition realize automation. The technical scheme adopted by the invention is as follows:
a test system for simulating horizontal load reaction of an engineering structure foundation in a frozen soil environment comprises a combined box body, an environment cooling system, a loading system and a data test system. The combined box body consists of a bottom plate (1) with a fixing groove, side plates (1), (2), side plates (2), (3), side plates (3), (4), side plates (4), (5), side plate inclined struts (6), inclined strut baffle plates (7), a combined connecting bolt (8) and an anchoring bolt (9). The combined type bottom plate is characterized in that the side plates 1 (2), 2 (3), 3 (4) and 4 (5) can be inserted into the bottom plate (1) with the fixing grooves, the side plates are connected into a whole through combined connecting bolts (8), the bottom plate (1) with the fixing grooves is fixed on the ground through anchor bolts (9), the inclined strut baffle plate (7) is welded on the bottom plate (1) with the fixing grooves, and the inclined strut (6) of the side plates can enhance the rigidity and stability of the side plates 1 (2) and 2 (3). The environment cooling system comprises refrigeration equipment (10), cooling liquid (11), a low-temperature-resistant guide pipe (12), heat-preservation cotton (13), a cooling pipe (14) and a binding belt (15). The device is characterized in that heat preservation cotton (13) with a certain thickness is arranged on the inner wall of a combined box body, soil is filled in the device in the test process, the contact part of the soil and the side wall is coiled into a cooling pipe (14), two ends of the cooling pipe (14) extend out of the soil surface, one end of the cooling pipe is connected with a liquid outlet of refrigeration equipment (10) through a low-temperature resistant guide pipe (12), the other end of the cooling pipe is connected with a liquid inlet of the refrigeration equipment (10), the low-temperature resistant guide pipe (12) is wrapped with the heat preservation cotton (13), the outside of the heat preservation cotton (13) is bundled with a ribbon (15) to reduce the interference of the external temperature, cooling liquid (11) is cooled through the refrigeration equipment (10), then enters the low-temperature resistant guide pipe (12) through the liquid outlet of the refrigeration equipment (10) and then enters the cooling pipe (14) through the low-temperature resistant guide pipe, and completing a cycle, wherein the heat in the soil body is taken away by the circulating cooling liquid (11) through a cooling pipe (14) embedded in the soil body, so that the purposes of cooling and freezing the soil body are achieved. The loading system mainly comprises a horizontal force loading jack (16), an oil pipe (17), a controller (18), an oil pump (19), a reaction wall (20), a vertical force loading cross beam (21), a support (22), vertical force loading deformed steel bars (23), a vertical pressure ring (24), a ground anchor bolt (25) and a ground anchor (26). The device is characterized in that the tail end of a horizontal force loading jack (16) is fixed on a reaction wall (20), the front end of the horizontal force loading jack is connected with a test model (33), the horizontal force loading jack (16) is connected with a control instrument (18) through an oil pipe (17), and the control instrument (18) is connected with an oil pump (19) to realize the horizontal force loading process of the test model (33); the vertical force loading beam (21) is placed on a support (22) on the top surface of the test model (33), is connected with the ground through vertical force loading screw steel (23) and a ground anchor (26), realizes vertical force loading on the test model (33) through the ground anchor (26), and determines the size of vertical loading force through a vertical pressure ring (24). The data testing system consists of a temperature sensor (27), a strain sensor (28), a soil pressure sensor (29), a sensor lead (30), a data acquisition instrument (31) and a computer (32). The device is characterized in that a temperature sensor (27) is embedded in a soil body, a strain sensor is arranged on the surface of a steel bar (34) in a test model (33), a soil pressure sensor (29) is fixed on the side surface of the foundation of the test model (33), various sensor leads (30) are led out of a combined box body and then connected with a data acquisition instrument (31), and then automatic data acquisition and storage are realized through a computer (32).
The advantages and the beneficial effects of the invention are as follows:
1. the invention realizes the cooling and freezing of the soil body through the circulation of the refrigerating fluid between the cooling pipe arranged in the soil body and the external refrigerating equipment, and can effectively simulate the frozen soil environment.
2. The invention adopts the large-volume and large-size combined box body, and the inside of the box body can be provided with a plurality of measuring points of the sensor, thereby effectively overcoming the defects of small soil sample size and limited function of the test system in the existing model test.
3. The combined box body has the functions of splitting and combining, is convenient to move and transport, and effectively improves the indoor model test efficiency.
4. The heat insulation material arranged in the test box body can reduce the heat loss in the box body, improve the cooling and freezing effects and effectively reduce the size and boundary effect in the model test process.
5. The invention can realize horizontal and vertical synchronous loading, and can effectively simulate larger upper structure weight by carrying out vertical loading through the ground anchor.
6. The invention has simple structure, easy operation, low requirement on working environment conditions and stable work, and simultaneously realizes the integrated management and control of the whole test device through a computer.
Drawings
FIG. 1 is a top view of the present invention.
Fig. 2 is a side view of the present invention.
Fig. 3 is a front view of the present invention.
FIG. 4 is a graph of temperature of a test point over time tested using the present invention.
Figure 5 is a temperature profile of the soil mass along the depth measured using the present invention for a horizontal load test.
FIG. 6 is a force-displacement skeleton curve actually measured using the present invention for horizontal loading tests.
Detailed Description
The invention will be further described with reference to the accompanying drawings:
as shown in fig. 1 to 3, a test system for simulating horizontal load response of an engineering structure foundation in a frozen soil environment includes four parts, namely a combined box, a cooling system, a loading system and a data testing system. The combined box body consists of a bottom plate (1) with a fixing groove, side plates (1), (2), side plates (2), (3), side plates (3), (4), side plates (4), (5), side plate inclined struts (6), inclined strut baffle plates (7), a combined connecting bolt (8) and an anchoring bolt (9). The combined type bottom plate is characterized in that the side plates 1 (2), 2 (3), 3 (4) and 4 (5) can be inserted into the bottom plate (1) with the fixing grooves, the side plates are connected into a whole through combined connecting bolts (8), the bottom plate (1) with the fixing grooves is fixed on the ground through anchor bolts (9), the inclined strut baffle plate (7) is welded on the bottom plate (1) with the fixing grooves, and the inclined strut (6) of the side plates can enhance the rigidity and stability of the side plates 1 (2) and 2 (3). The environment cooling system consists of refrigeration equipment (10), cooling liquid (11), a low-temperature-resistant guide pipe (12), heat-preservation cotton (13), a cooling pipe (14) and a binding belt (15). The combined type refrigerator is characterized in that heat insulation cotton (13) with a certain thickness is arranged on the inner wall of a combined type refrigerator body, the thickness of the heat insulation cotton is determined according to the ambient temperature, in order to ensure the heat insulation effect, the thickness of the heat insulation cotton (13) is not smaller than 10cm, a cooling pipe (14) is coiled inside the heat insulation cotton (13), two ends of the cooling pipe (14) extend out of the soil surface, one end of the cooling pipe (14) is connected with a liquid outlet of refrigeration equipment (10) through a low temperature resistant guide pipe (12), the other end of the cooling pipe (14) is connected with a liquid inlet of the refrigeration equipment (10), the heat insulation cotton (13) is wrapped outside the low temperature resistant guide pipe (12), the exterior of the heat insulation cotton (13) is bound with a binding belt (15) to reduce the interference of the external temperature, cooling liquid (11) is cooled through the refrigeration equipment (10), then enters the low temperature resistant guide, the cooling liquid is led into a liquid inlet of the refrigeration equipment (10) through another low temperature resistant conduit (12) to complete a cycle, and the heat in the soil body is taken away by the circulating cooling liquid (11) through a cooling pipe (14) embedded in the soil body, thereby achieving the purposes of cooling and freezing the soil body. The loading system mainly comprises a horizontal force loading jack (16), an oil pipe (17), a controller (18), an oil pump (19), a reaction wall (20), a vertical force loading cross beam (21), a support (22), vertical force loading deformed steel bars (23), a vertical pressure ring (24), a ground anchor bolt (25) and a ground anchor (26). The device is characterized in that the tail end of a horizontal force loading jack (16) is fixed on a reaction wall (20), the front end of the horizontal force loading jack is connected with a test model (33), the horizontal force loading jack (16) is connected with a control instrument (18) through an oil pipe (17), and the control instrument (18) is connected with an oil pump (19) to realize the horizontal force loading process of the test model (33); the vertical force loading beam (21) is placed on a support (22) on the top surface of the test model (33), is connected with the ground through vertical force loading screw steel (23) and a ground anchor (26), realizes vertical force loading on the test model (33) through the ground anchor (26), and determines the size of vertical loading force through a vertical pressure ring (24). The data testing system consists of a temperature sensor (27), a strain sensor (28), a soil pressure sensor (29), a sensor lead (30), a data acquisition instrument (31) and a computer (32). The device is characterized in that a temperature sensor (27) is embedded in a soil body, a strain sensor is arranged on the surface of a steel bar (34) in a test model (33), a soil pressure sensor (29) is fixed on the side surface of the foundation of the test model (33), various sensor leads (30) are led out of a combined box body and then connected with a data acquisition instrument (31), and then automatic data acquisition and storage are realized through a computer (32). The four parts are coordinated and work together to form a test system which can be used for simulating the horizontal load reaction of the engineering structure foundation in the frozen soil environment.
Test examples
The test structure comprises a pier, a bearing platform and 4 pile foundations, the length of each pile foundation is 160cm, the diameter of each pile foundation is 19cm, the size of each bearing platform is 85cm multiplied by 75cm multiplied by 31cm (length, width and height), the height of each pier is 100cm, the sectional size of each pile foundation is 51cm multiplied by 35cm, the longitudinal reinforcement ratio of each pier and each pile foundation is 0.40% and 0.43%, the test example collects the cooling process of the soil body in the test box and the distribution of the temperature along the depth, and the force-displacement skeleton curve at the top of each pier in the loading process; FIG. 4 is a curve of temperature variation with time of a measuring point tested by the present invention, and as can be seen from FIG. 4, the temperature variation curve is smooth, which proves that the temperature reduction process of the environmental cooling system of the present invention is stable and reliable; FIG. 5 is a temperature curve of a soil body along the depth actually measured by adopting the horizontal load test of the invention, and as can be seen from FIG. 5, the freezing depth of the soil body from the top surface to the bottom is about 50cm, the freezing state of a seasonal frozen soil area in winter can be effectively simulated, and the temperature distribution of FIG. 5 proves that the cooling system of the invention has high cooling efficiency and effective heat preservation measures; FIG. 6 is a force-displacement skeleton curve actually measured by the horizontal load test method, and as can be seen from FIG. 6, the test result of the method can effectively reflect the horizontal load reaction of the engineering structure foundation in the frozen soil environment, and the data is stable and reliable.
Claims (5)
1. The utility model provides a can be used to simulate test system of engineering structure basic horizontal load reaction under frozen soil environment, includes four major parts of combination formula box, environmental cooling system, loading system and data test system, its characterized in that:
the combined box body consists of a bottom plate (1) with a fixing groove, side plates (1), (2), side plates (2), (3), side plates (3), (4), side plates (4), (5), side plate inclined struts (6), inclined strut baffle plates (7), a combined connecting bolt (8) and an anchoring bolt (9); the novel combined type floor is characterized in that the side plates 1 (2), 2 (3), 3 (4) and 4 (5) can be inserted into the bottom plate (1) with the fixing grooves, the side plates are connected into a whole through combined connecting bolts (8), the bottom plate (1) with the fixing grooves is fixed on the ground through anchor bolts (9), the inclined strut baffle plate (7) is welded on the bottom plate (1) with the fixing grooves, and the inclined strut (6) of the side plates can enhance the rigidity and stability of the side plates 1 (2) and 2 (3); the environment cooling system consists of refrigeration equipment (10), cooling liquid (11), a low-temperature-resistant guide pipe (12), heat-preservation cotton (13), a cooling pipe (14) and a binding belt (15); the device is characterized in that heat preservation cotton (13) with a certain thickness is arranged on the inner wall of a combined box body, soil is filled in the device in the test process, the contact part of the soil and the side wall is coiled into a cooling pipe (14), two ends of the cooling pipe (14) extend out of the soil surface, one end of the cooling pipe is connected with a liquid outlet of refrigeration equipment (10) through a low temperature resistant guide pipe (12), the other end of the cooling pipe is connected with a liquid inlet of the refrigeration equipment (10), the low temperature resistant guide pipe (12) is externally wrapped with the heat preservation cotton (13), the heat preservation cotton (13) is externally bundled with a rolling belt (15) to reduce the interference of the external temperature, cooling liquid (11) is cooled through the refrigeration equipment (10), then enters the low temperature resistant guide pipe (12) through the liquid outlet of the refrigeration equipment (10) and then enters the cooling pipe (14) through the low temperature resistant guide pipe (12), and finally, completing a cycle; the loading system mainly comprises a horizontal force loading jack (16), an oil pipe (17), a controller (18), an oil pump (19), a reaction wall (20), a vertical force loading cross beam (21), a support (22), vertical force loading deformed steel (23), a vertical pressure ring (24), a ground anchor bolt (25) and a ground anchor (26); the device is characterized in that the tail end of a horizontal force loading jack (16) is fixed on a reaction wall (20), the front end of the horizontal force loading jack is connected with a test model (33), the horizontal force loading jack (16) is connected with a control instrument (18) through an oil pipe (17), and the control instrument (18) is connected with an oil pump (19) to realize the horizontal force loading process of the test model (33); the vertical force loading beam (21) is placed on a support (22) on the top surface of the test model (33), is connected with the ground through vertical force loading screw steel (23) and a ground anchor (26), realizes vertical force loading on the test model (33) through the ground anchor (26), and determines the size of vertical loading force through a vertical pressure ring (24); the data testing system consists of a temperature sensor (27), a strain sensor (28), a soil pressure sensor (29), a sensor lead (30), a data acquisition instrument (31) and a computer (32); the device is characterized in that a temperature sensor (27) is embedded in a soil body, a strain sensor is arranged on the surface of a vertical longitudinal bar of a steel reinforcement cage (34) in a test model (33), a soil pressure sensor (29) is fixed on the side surface of the foundation of the test model (33), various sensor leads (30) are led out of a combined box body and then connected with a data acquisition instrument (31), and automatic data acquisition and storage are realized through a computer (32).
2. The test system for simulating the horizontal load reaction of the foundation of the engineering structure in the frozen soil environment according to claim 1, wherein the split and combination functions of the combined box body are realized by loosening and tightening the connecting bolts (8), and the transverse movement function of the combined box body is realized by loosening and tightening the anchoring bolts (9).
3. The test system for simulating the foundation horizontal load response of the engineering structure in the frozen soil environment according to claim 1, wherein the cooling liquid (11) needs to be cooled by the refrigeration equipment (10), and the circulated cooling liquid (11) takes away heat in the soil body through the cooling pipe (14) embedded in the soil body, so that the functions of cooling and freezing the soil body are realized.
4. The test system for simulating the horizontal load response of the foundation of the engineering structure in the frozen soil environment as claimed in claim 1, wherein the combined box body is provided with heat insulation cotton (13) to realize the functions of heat insulation and size effect reduction.
5. The test system for simulating horizontal load response of an engineering structure foundation in a frozen soil environment as claimed in claim 1, wherein a large upper load weight can be achieved by vertical loading of the ground anchors (26).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202010921424.7A CN111912721A (en) | 2020-09-04 | 2020-09-04 | Test system for simulating horizontal load reaction of engineering structure foundation in frozen soil environment |
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| CN202010921424.7A CN111912721A (en) | 2020-09-04 | 2020-09-04 | Test system for simulating horizontal load reaction of engineering structure foundation in frozen soil environment |
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| CN111912721A true CN111912721A (en) | 2020-11-10 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
-
2020
- 2020-09-04 CN CN202010921424.7A patent/CN111912721A/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
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Application publication date: 20201110 |
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