CN106979900B - Soil and structure interface fluid-solid coupling effect tester - Google Patents
Soil and structure interface fluid-solid coupling effect tester Download PDFInfo
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- CN106979900B CN106979900B CN201710248558.5A CN201710248558A CN106979900B CN 106979900 B CN106979900 B CN 106979900B CN 201710248558 A CN201710248558 A CN 201710248558A CN 106979900 B CN106979900 B CN 106979900B
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- 239000002689 soil Substances 0.000 title claims abstract description 29
- 239000007787 solid Substances 0.000 title claims abstract description 16
- 230000001808 coupling effect Effects 0.000 title claims abstract description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 54
- 238000012360 testing method Methods 0.000 claims abstract description 40
- 238000012856 packing Methods 0.000 claims abstract description 21
- 230000001105 regulatory effect Effects 0.000 claims description 7
- 239000004575 stone Substances 0.000 claims description 7
- 239000000463 material Substances 0.000 claims description 6
- 238000010008 shearing Methods 0.000 claims description 5
- 230000008878 coupling Effects 0.000 abstract description 7
- 238000010168 coupling process Methods 0.000 abstract description 7
- 238000005859 coupling reaction Methods 0.000 abstract description 7
- 238000011160 research Methods 0.000 abstract description 5
- 230000000694 effects Effects 0.000 abstract 1
- 230000000007 visual effect Effects 0.000 abstract 1
- 238000000034 method Methods 0.000 description 6
- 230000008569 process Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 238000006243 chemical reaction Methods 0.000 description 4
- 230000001276 controlling effect Effects 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000008846 dynamic interplay Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000005325 percolation Methods 0.000 description 1
- 230000003449 preventive effect Effects 0.000 description 1
- 238000009991 scouring Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Classifications
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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
- G01N3/56—Investigating resistance to wear or abrasion
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
-
- 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
- G01N3/56—Investigating resistance to wear or abrasion
- G01N3/565—Investigating resistance to wear or abrasion of granular or particulate material
-
- 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
- G01N3/56—Investigating resistance to wear or abrasion
- G01N3/567—Investigating resistance to wear or abrasion by submitting the specimen to the action of a fluid or of a fluidised material, e.g. cavitation, jet abrasion
-
- 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
- G01N2203/0014—Type of force applied
- G01N2203/0026—Combination of several types of applied forces
-
- 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
- G01N2203/003—Generation of the force
- G01N2203/0032—Generation of the force using mechanical means
- G01N2203/0037—Generation of the force using mechanical means involving a rotating movement, e.g. gearing, cam, eccentric, or centrifuge effects
-
- 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
- G01N2203/003—Generation of the force
- G01N2203/0042—Pneumatic or hydraulic means
- G01N2203/0048—Hydraulic 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
- G01N2203/026—Specifications of the specimen
- G01N2203/0284—Bulk material, e.g. powders
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
Abstract
The application discloses a soil and structure interface fluid-solid coupling action tester, which solves the problem of soil and structure fluid-solid coupling research, has the advantages of simple structure, convenient operation, and visual and effective test effect on the fluid-solid coupling between the soil and the structure, and adopts the technical scheme that: the device comprises a packing box arranged on a test bed, wherein the bottom of the packing box is connected with a seepage loading system, a structure is arranged in the packing box, the side part of the packing box is connected and matched with a horizontal stress loading device, and the top of the structure is connected and matched with a vertical stress loading device; the seepage loading system comprises a water tank, and a water pipe is communicated between the water tank and the stuffing box; the water tank is also communicated with the air-entrapping pump through an air pipe.
Description
Technical Field
The application relates to the technical fields of foundation engineering, hydraulic engineering and road engineering, in particular to a soil and structure interface fluid-solid coupling effect tester.
Background
In recent half centuries, along with the construction of a large amount of infrastructures and hydraulic engineering, the deformation control requirements on soil and various structural systems are more and more strict, and the problem of soil and structure contact is widely paid attention to expert scholars worldwide. Expert students develop a large number of new test instruments based on the traditional test instruments, and have conducted detailed researches on the static and dynamic interaction between soil and a structure, wherein discontinuous deformation such as sliding, disengaging and the like of a contact interface between the soil and the structure is relatively mature.
However, the existing hydraulic engineering has great defects in the mechanism and the preventive measure of the contact interface damage between soil and a structure caused by fluid-solid coupling action, and further research is needed.
In view of the above, there is no effective solution to the problem of the fluid-solid coupling research of soil and structure in the prior art.
Disclosure of Invention
In order to overcome the defects in the prior art, the application provides the soil and structure interface fluid-solid coupling effect tester which has a simple structure and convenient operation, and can intuitively and effectively test the fluid-solid coupling between the soil and the structure;
in order to achieve the above purpose, the present application adopts the following technical scheme:
the soil and structure interface fluid-solid coupling action tester comprises a packing box arranged on a test bed, wherein the bottom of the packing box is connected with a seepage loading system, a structure is arranged in the packing box, the side part of the packing box is connected and matched with a horizontal stress loading device, and the top of the structure is connected and matched with a vertical stress loading device;
the seepage loading system comprises a water tank, and a water pipe is communicated between the water tank and the stuffing box; the water tank is also communicated with the air-entrapping pump through an air pipe.
Further, the water tank comprises a tank body, and a top cover is arranged at the top of the tank body.
Further, a pressure regulating valve is arranged on the water pipe.
Furthermore, a pressure gauge is arranged at the top of the water tank.
Further, the vertical stress loading device comprises a loading frame, and a loading body is arranged at the bottom of the loading frame to apply vertical force to the structure; the bottom of the loading frame is connected with a lever linkage device, and the lever linkage device drives the loading frame to move up and down.
Further, the lever linkage device comprises a lever with one end connected with the loading frame, and the other end of the lever is connected with the pulling device.
Further, the middle part of the lever is hinged with a control rod, and the control rod is fixed on the test bench.
Further, the pulling device comprises a pulley fixed on the test bench, a rope is hung on the pulley, one end of the rope is connected with the lever, and the other end of the rope is connected with the balancing weight.
Further, the frame bars at two sides of the loading frame are in sliding connection with the test bed.
Furthermore, a dial indicator is arranged on the loading frame.
Further, the horizontal stress loading device comprises a jack connected with the packing box, and the jack is connected with the hydraulic servo system; the side part of the jack is fixed with a counterforce plate, and the counterforce plate is fixed on the test bench.
Furthermore, the side part of the structure is also connected with a pressure sensor through a dowel bar, and the pressure sensor is fixed on the test bench through a connecting plate.
Further, the packing box comprises an outer box, a shearing box is arranged at the lower part in the outer box, a permeable stone is arranged at the bottom of the shearing box, soil materials are filled on the upper part of the permeable stone, and a structural object is arranged at the lower part of the soil materials.
Further, the side wall of the outer box is connected with a water outlet pipe.
Further, the packing box is arranged on the slide rod, and moves along the slide rod when the packing box is subjected to external force.
Further, the bottom of the packing box is provided with a water passing bucket which is connected with a seepage loading system.
Compared with the prior art, the application has the beneficial effects that:
the tester is simple in structure, the seepage loading system is arranged in the tester, the acting force of water is taken into consideration, and the tester can be used for simulating the contact scouring damage of soil and a structure under the coupling action of seepage and external force so as to be convenient for researching the problem of fluid-solid coupling of the soil and the structure; the tester model is convenient to process, easy to disassemble and carry and capable of being reused.
The tester breaks through the loading mode of the jack in the traditional tester, and loads the interface of the soil and the structure by converting gravity into loading force.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the application.
FIG. 1 is an assembly view of a test meter of the present application;
FIG. 2 is a schematic diagram of a test stand;
FIG. 3 is a schematic diagram of a percolation loading system;
FIG. 4 is a schematic diagram of a vertical stress loading system;
FIG. 5 is a schematic diagram of a horizontal stress loading system;
FIG. 6 is a schematic diagram of a stuffing box;
in the drawings, 1, a test bench, 2, a seepage loading system, 3, a vertical stress loading system, 4, a horizontal stress loading system, 5, a packing box, 6, a test bench, 7, a test support, 8, a groove, 9, an air adding pump, 10, an air pipe, 11, a water pipe, 12, a water tank, 13, a pressure regulating valve, 14, a top cover, 15, a tank body, 16, a pressure gauge, 17, a pulley system, 18, a lever system, 19, a loading frame, 20, a counterweight, 21, a lever, 22, a control rod, 23, a counterforce plate, 24, a horizontal oil jack, 25, an oil pressure servo system, 26, a shear stress sensing system, 27, a dowel bar, 28, a pressure sensor, 29, a structural member, 30, a lower shear box, 31, an outer box, 32, a water passing bucket, 33, a stress device, 34, a water outlet pipe and 35.
Detailed Description
It should be noted that the following detailed description is illustrative and is intended to provide further explanation of the application. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the present application. As used herein, the singular is also intended to include the plural unless the context clearly indicates otherwise, and furthermore, it is to be understood that the terms "comprises" and/or "comprising" when used in this specification are taken to specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof.
As described in the background art, the problems of the prior art on the fluid-solid coupling research of soil and a structure exist, and in order to solve the technical problems, the application provides a fluid-solid coupling effect tester for the interface of soil and a structure.
In a typical embodiment of the present application, as shown in fig. 1, a soil and structure interface fluid-solid coupling tester is provided, which mainly comprises a test bench 1, a seepage loading system 2, a vertical stress loading system 3, a horizontal stress loading system 4 and a packing box 5. The stress loading system comprises a vertical stress loading system and a horizontal stress loading system.
The test bed 1 is composed of a test bed 6 and a test support 7, wherein the test bed 6 and the test support 7 are made of Q235 steel, and the test bed 6 and the test support 7 are rigidly connected. The test stand 6 is provided with a groove 8 for installing the seepage loading system 2 and the stuffing box 5.
The seepage loading system comprises an air pump 9, an air pipe 10, a water pipe 11, a water tank 12 and a pressure regulating valve 13. The pressure regulating valve is used for controlling the output water pressure of the seepage loading system. The air pump is used for providing air pressure for the water tank and converting the air pressure into water pressure through the water tank. The air pump 9 is connected with the water tank 12 by adopting an air pipe 10, and the water tank 12 is connected with the stuffing box 5 by adopting a water pipe 11. A pressure regulating valve 13 is added in the water pipe 11 between the water tank 12 and the stuffing box 5 for controlling the water pressure of seepage. The water tank 12 comprises a top cover 14 and a tank body 15, the top cover 14 and the tank body 15 are connected through bolts, and a pressure gauge 16 is arranged above the top cover 14 and used for detecting the pressure in the tank body 15. The pressure regulating valve is connected with the water tank by a water pipe.
The vertical stress loading system comprises a pulley system 17, a lever system 18 and a loading frame 19. The lever system adopts the lever principle to convert the load provided by the pulley system into vertical stress in a multiplied way. The pulley system functions to convert the vertically downward load provided by the counterweight into a vertically upward load. The loading frame is used for applying the load provided by the lever system and the pulley system to the stuffing box. The pulley system 17 is rigidly connected to the test bed 6 and provides the required vertical stress by means of a counterweight 20. The lever system 18 is connected with the loading frame 19 in an articulated manner and is connected with the pulley system 17 through a rope. The lever system 18 comprises a lever 21 and a control rod 22, wherein the lever 21 and the control rod 22 are connected in a hinged mode, and the control rod 22 is used for controlling the lever 21 to rotate so as to facilitate the application of vertical stress. A dial indicator is provided on the loading frame 19 for monitoring vertical deformation.
The horizontal stress loading system comprises a counter-force plate 23, a horizontal oil jack 24, an oil pressure servo system 25 and a shear stress sensing system 26. The reaction plate is used for providing horizontal reaction force required in the horizontal stress loading process. The horizontal oil jack is used for providing horizontal stress. The oil pressure servo system is used for realizing stable output of horizontal stress, so that normal stress loading of the horizontal stress is realized. The shear stress sensing system adopts a pressure sensor to read the shear stress of the interface in the test process in a pressure mode. The reaction plate 23 is rigidly connected to the test bed 6, and the reaction plate 23 is rigidly connected to the horizontal hydraulic jack 24. The horizontal hydraulic jack 24 realizes stable loading of horizontal stress through the hydraulic servo system 25. The shear stress sensing system 26 comprises a dowel bar 27 and a pressure sensor 28, wherein the dowel bar 27 is rigidly connected with a structure 29, and transmits the shear stress of the structure 29 to the pressure sensor 28.
The stuffing box comprises a structural object 29, a lower shear box 30, an outer box 31, a water barrel 32, a stress device 33, a water outlet pipe 34 and a sliding rod 35. The structure is formed by pouring the structure required in the test process. The lower shear box is used for filling soil materials required in the test process. The outer box is used for connecting the lower shearing box and the water barrel, and a water outlet pipe is arranged in the outer box and used for removing interface moisture in the test. The stress device is used for transmitting the vertical stress to the structure. The sliding rod is used for realizing the horizontal movement of the stuffing box in the test process. Wherein the structure 29 is rigidly connected with the stress device 33 for bearing vertical stress, the lower shear box 30 is rigidly connected with the outer box 31, the water barrel 32 is rigidly connected with the outer box 31, and the outer diameters of the water barrel 32 and the lower shear box 30 are the same. The water permeable stone is placed at the bottom of the lower shear box 30, and the soil material is filled on the upper part of the water permeable stone, so that the water passing bucket and the water permeable stone are adopted, and the seepage flow is stable and penetrates the soil body. The slide bar 35 facilitates horizontal movement of the stuffing box 5 when it is under force. The side wall of the outer box 31 is connected with a water outlet pipe 34 for discharging water flowing out of the interface during the test.
The above description is only of the preferred embodiments of the present application and is not intended to limit the present application, but various modifications and variations can be made to the present application by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the protection scope of the present application.
Claims (6)
1. The soil and structure interface fluid-solid coupling effect tester is characterized by comprising a packing box arranged on a test bed, wherein the bottom of the packing box is connected with a seepage loading system, a structure is arranged in the packing box, the side part of the packing box is connected and matched with a horizontal stress loading device, and the top of the structure is connected and matched with a vertical stress loading device;
the seepage loading system comprises a water tank, and a water pipe is communicated between the water tank and the stuffing box; the water tank is also communicated with the air-entrapping pump through an air pipe;
the vertical stress loading device comprises a loading frame, wherein a loading carrier is arranged at the bottom of the loading frame to apply vertical force to a structure; the bottom of the loading frame is connected with a lever linkage device, and the lever linkage device drives the loading frame to move up and down;
the lever linkage device comprises a lever with one end connected with the loading frame, and the other end connected with the pulling device;
the pulling device comprises a pulley fixed on the test bench, a rope is hung on the pulley, one end of the rope is connected with the lever, and the other end of the rope is connected with the balancing weight;
the packing box comprises an outer box, a shearing box is arranged at the inner lower part of the outer box, a permeable stone is arranged at the bottom of the shearing box, soil materials are filled on the upper part of the permeable stone, and a structural object is arranged at the lower part of the soil materials; and the side wall of the outer box is connected with a water outlet pipe.
2. The tester as claimed in claim 1, wherein the water tank comprises a tank body, and a top cover is arranged at the top of the tank body; a pressure regulating valve is arranged on the water pipe; the top of the water tank is provided with a pressure gauge.
3. The test meter of claim 1, wherein the lever middle is hinged to a control rod, the control rod being secured to the test stand.
4. The tester as claimed in claim 1, wherein the frame bars on both sides of the loading frame are slidingly connected with the test bed; and a dial indicator is arranged on the loading frame.
5. The tester of claim 1, wherein the horizontal stress loading device comprises a jack connected with the stuffing box, the jack being connected with a hydraulic servo system; the side part of the jack is fixed with a counterforce plate which is fixed on the test bench; the lateral part of the structure is also connected with a pressure sensor through a dowel bar, and the pressure sensor is fixed on the test bench through a connecting plate.
6. The tester of claim 1, wherein the stuffing box is arranged on the slide bar and moves along the slide bar when the stuffing box is subjected to external force; and the bottom of the packing box is provided with a water passing bucket which is connected with a seepage loading system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710248558.5A CN106979900B (en) | 2017-04-17 | 2017-04-17 | Soil and structure interface fluid-solid coupling effect tester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710248558.5A CN106979900B (en) | 2017-04-17 | 2017-04-17 | Soil and structure interface fluid-solid coupling effect tester |
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| Publication Number | Publication Date |
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| CN106979900A CN106979900A (en) | 2017-07-25 |
| CN106979900B true CN106979900B (en) | 2023-11-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710248558.5A Active CN106979900B (en) | 2017-04-17 | 2017-04-17 | Soil and structure interface fluid-solid coupling effect tester |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111851604B (en) * | 2020-06-22 | 2021-08-06 | 西安理工大学 | Pile sinking interface parameter visualization shearing box considering interface fluid-solid coupling effect |
| CN112284928A (en) * | 2020-09-30 | 2021-01-29 | 中国科学院武汉岩土力学研究所 | Multidirectional rock shearing-seepage coupling test system with acoustic test function |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102323159A (en) * | 2011-08-12 | 2012-01-18 | 河海大学 | Permeameter for contact surface of soil and works at high stress, high hydraulic gradient, and large shear deformation |
| CN103994969A (en) * | 2014-05-05 | 2014-08-20 | 河海大学 | Tester and test method for contact characteristic between soil and structure under waterpower combined action |
| CN105865939A (en) * | 2016-04-05 | 2016-08-17 | 王永洪 | Pile-soil interface shearing stress testing method |
-
2017
- 2017-04-17 CN CN201710248558.5A patent/CN106979900B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102323159A (en) * | 2011-08-12 | 2012-01-18 | 河海大学 | Permeameter for contact surface of soil and works at high stress, high hydraulic gradient, and large shear deformation |
| CN103994969A (en) * | 2014-05-05 | 2014-08-20 | 河海大学 | Tester and test method for contact characteristic between soil and structure under waterpower combined action |
| CN105865939A (en) * | 2016-04-05 | 2016-08-17 | 王永洪 | Pile-soil interface shearing stress testing method |
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| CN106979900A (en) | 2017-07-25 |
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