CN211061325U - Cement-based material continuous tension loading device based on lever method - Google Patents
Cement-based material continuous tension loading device based on lever method Download PDFInfo
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- CN211061325U CN211061325U CN201921589876.9U CN201921589876U CN211061325U CN 211061325 U CN211061325 U CN 211061325U CN 201921589876 U CN201921589876 U CN 201921589876U CN 211061325 U CN211061325 U CN 211061325U
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Abstract
The utility model discloses a cement-based material continuously draws loading device based on lever method, including stand, lever arm, U shaped steel board, corrosion tank and circulation tank. The upright post and the corrosion tank filled with sulfate solution are connected on the same bottom plate, and the upper end of the upright post is hinged with a lever arm. One end of the lever arm is connected with a steel stay cable I, and the other end of the lever arm is connected with a counterweight. The lower extreme of steel cable I is connected with a U shaped steel board, and the below of this U shaped steel board is provided with another U shaped steel board. The openings of the two U-shaped steel plates are opposite, and a cement-based material test piece is clamped between the two U-shaped steel plates. The lower end of the U-shaped steel plate below is connected with a steel stay II, and the steel stay II is connected to the bottom of the corrosion tank. The cement-based material test pieces were immersed in a sulfate solution. The utility model discloses can study cement-based material and stabilize the inefficacy and decay mechanism under the tensile stress effect and the harmful substance erosion action.
Description
Technical Field
The utility model relates to a cement-based material continuously pulls loading device.
Background
Currently, the durability test for most cement-based material test blocks is conducted under no-load conditions with corrosive media attack. The actual engineering structure is always under the load action, and the continuous load can change the microscopic structure of the cement-based material, so that the impermeability of the cement-based material is changed, and the durability of the cement-based material is influenced. The erosion of harmful substances of the cement-based material test block in a no-load state cannot truly reflect the erosion state of the cement-based material by a corrosive medium in a use stage. Therefore, the establishment of a multifactorial cable coupling test method under a stress state of a simulated real environment has great significance for researching the degradation rule damage mechanism and the protective measures of the performance of the cement-based material under the coupling action of the multifactorial system.
At present, the design of a cement-based material durability test loading device under the action of compressive stress or tensile stress and multi-factor coupling is similar at home and abroad. And a stress wrench nut is adopted to load the test piece or provide continuous stable stress by utilizing the deformation energy storage of a spring. Due to creep of the cement-based material and loss of spring force, the sustained load is reduced, which reduces the accuracy of the loading load. When a durability test under the action of continuous unidirectional stress is researched, a continuous tension loading device which is simple and easy to operate and can meet a certain precision requirement needs to be designed.
Disclosure of Invention
The utility model aims at providing a simple structure, the accurate load loading device of tension load.
The technical scheme adopted for realizing the purpose of the utility model is that the cement-based material continuous tension loading device based on the lever method comprises a column, a lever arm, a U-shaped steel plate, a corrosion tank and a circulating water tank.
The stand is connected on same bottom plate I with corroding the pond, and the upper end of stand articulates there is the lever arm. One end of the lever arm is positioned right above the corrosion tank, and the end is connected with a steel stay I. The other end of the lever arm is connected with a counterweight.
The lower extreme of steel cable I is connected with a U shaped steel board, and the below of this U shaped steel board is provided with another U shaped steel board. The openings of the two U-shaped steel plates are opposite, and a cement-based material test piece is clamped between the two U-shaped steel plates.
The lower end of the U-shaped steel plate below is connected with a steel stay II, and the steel stay II is connected to the bottom of the corrosion tank. And the two U-shaped steel plates, the cement-based material test piece and the steel stay II are all positioned in the corrosion pool.
The corrosion tank is communicated with the circulating water tank through a drain pipe.
Furthermore, a protection upright post is arranged below the lever arm and is positioned between the counterweight and the upright post.
Furthermore, the U-shaped steel plate comprises a rectangular bottom plate II and two side plates, and one plate surface of the bottom plate II is perpendicularly connected with the two side plates. The two side plates are parallel to each other and are respectively close to two non-adjacent edges of the bottom plate II.
The inner side of each side plate is provided with a plurality of shear keys. The two U-shaped steel plates and the cement-based material test piece are poured into a whole, and the plurality of shear connectors extend into the cement-based material test piece.
Further, the parts of the cement-based material test piece clamped and fixed on the two U-shaped steel plates are provided with protective coatings, and the surfaces of the two U-shaped steel plates and the steel cable II are provided with the protective coatings.
Furthermore, a sulfate solution is injected into the corrosion tank, and the two U-shaped steel plates, the cement-based material test piece and the steel stay cable II are all soaked in the sulfate solution.
Further, a plurality of high-strength bolts are arranged on the bottom plate I.
Further, the counterweight is a concrete test block, a sand bag or a steel counterweight.
The technical effect of the utility model is undoubtedly, the utility model discloses a stable stress is applyed to the cement-based material test block through the counter weight to the principle of lever, can accurately simulate out the atress condition of cement-based material among the actual conditions. The utility model overcomes current test method is in studying because the stress loss or the relaxed problem of stress that other factors caused, guarantees that the test block is invariable at the stress that long-term stage received to improve the accuracy of test result. And simultaneously, the utility model discloses a device still has advantages such as the principle is simple, simple operation and low cost.
Drawings
FIG. 1 is a schematic diagram of a lever method-based cement-based material continuous tension loading device;
FIG. 2 is a schematic diagram of a U-shaped steel plate and a cement-based material test piece which are integrally poured.
In the figure: the device comprises an upright column 1, a lever arm 2, a U-shaped steel plate 3, a bottom plate II 301, two side plates 302, a shear key 303, a protective upright column 4, a corrosion pool 5, a circulating water tank 6, a bottom plate I7, a high-strength bolt 701, a steel cable I8, a counterweight 9, a cement-based material test piece 10, a steel cable II 11 and a drain pipe 12.
Detailed Description
The present invention will be further described with reference to the following examples, but it should not be construed that the scope of the present invention is limited to the following examples. Various substitutions and modifications can be made without departing from the technical spirit of the invention and according to the common technical knowledge and conventional means in the field, and all shall be included in the scope of the invention.
Example 1:
the embodiment discloses a lever method-based cement-based material continuous tension loading device, which comprises an upright post 1, a lever arm 2, a U-shaped steel plate 3, a corrosion pool 5 and a circulating water tank 6.
Referring to fig. 1, the upright 1 and the corrosion tank 5 are connected to the same bottom plate I7, and the upper end of the upright 1 is hinged with a lever arm 2 through a pin. A plurality of high-strength bolts 701 are arranged on the base plate I7, and in the installation process, the high-strength bolts 701 are used for fixing the base plate I7.
One end of the lever arm 2 is positioned right above the corrosion tank 5, and the end is connected with a steel stay I8. The other end of the lever arm 2 is connected with a counterweight 9, and in the embodiment, the counterweight 9 is a steel counterweight.
Referring to fig. 1, the lower end of the steel cable i 8 is connected with a U-shaped steel plate 3, and another U-shaped steel plate 3 is arranged below the U-shaped steel plate 3. The openings of the two U-shaped steel plates 3 are opposite, and a cement-based material test piece 10 is clamped between the two U-shaped steel plates 3.
Referring to fig. 2, the U-shaped steel plate 3 includes a rectangular bottom plate ii 301 and two side plates 302, and one plate surface of the bottom plate ii 301 is perpendicularly connected to the two side plates 302. The two side plates 302 are parallel to each other, and the two side plates 302 are respectively close to two non-adjacent edges of the bottom plate II 301.
The inner side of each side plate 302 is provided with a plurality of shear keys 303. The two U-shaped steel plates 3 and the cement-based material test piece 10 are poured into a whole, and the plurality of shear keys 303 extend into the cement-based material test piece 10 to realize common stress.
The lower end of the U-shaped steel plate 3 below is connected with a steel stay II 11, and the steel stay II 11 is connected to the bottom of the corrosion tank 5. And a sulfate solution is injected into the corrosion tank 5, and the two U-shaped steel plates 3, the cement-based material test piece 10 and the steel cable II 11 are all soaked in the sulfate solution.
The counterweight 9 applies pulling force to the steel cable I8, the steel cable II 11 and the cement-based material test piece 10 through a lever normal direction, so that the continuous stress state of the cement-based material in the actual situation is simulated.
The cement-based material test piece 10 is fixedly clamped on the two U-shaped steel plates 3, and protective coatings are arranged on the surfaces of the two U-shaped steel plates 3 and the steel stay II 11. Therefore, the upper end and the lower end of the cement-based material test piece 10, the two U-shaped steel plates 3 and the steel stay II 11 are not corroded by the sulfate solution, and the service life of the device is prolonged.
The corrosion tank 5 is communicated with the circulating water tank 6 through a drain pipe 12. The circulating water tank 6 is used for adjusting the concentration of the sulfate solution and replacing the sulfate solution.
Referring to fig. 1, a protective column 4 is arranged below the lever arm 2, and the protective column 4 is positioned between the counterweight 9 and the column 1. In the experimental process, when the cement-based material test piece 10 is broken due to tensile stress, the lever arm 2 is rapidly inclined towards the direction of the counterweight 9, the protection upright post 4 can support the lever arm 2, and damage caused by rapid falling of the counterweight 9 is prevented.
Example 2:
the embodiment discloses a lever method-based cement-based material continuous tension loading device, which comprises an upright post 1, a lever arm 2, a U-shaped steel plate 3, a corrosion pool 5 and a circulating water tank 6.
Referring to fig. 1, the upright 1 and the corrosion tank 5 are connected to the same bottom plate I7, and the upper end of the upright 1 is hinged with a lever arm 2. One end of the lever arm 2 is positioned right above the corrosion tank 5, and the end is connected with a steel stay I8. The other end of the lever arm 2 is connected with a counterweight 9.
The lower extreme of steel cable I8 is connected with a U shaped steel board 3, and this U shaped steel board 3's below is provided with another U shaped steel board 3. The openings of the two U-shaped steel plates 3 are opposite, and a cement-based material test piece 10 is clamped between the two U-shaped steel plates 3.
The lower end of the U-shaped steel plate 3 below is connected with a steel stay II 11, and the steel stay II 11 is connected to the bottom of the corrosion tank 5. And the two U-shaped steel plates 3, the cement-based material test piece 10 and the steel stay II 11 are all positioned in the corrosion pool 5.
Referring to fig. 1, the corrosion tank 5 is communicated with the circulation tank 6 through a drain pipe 12.
Example 3:
the main structure of the present embodiment is the same as that of embodiment 2, and further, referring to fig. 1, a protection column 4 is arranged below the lever arm 2, and the protection column 4 is located between the counterweight 9 and the column 1. In the experimental process, when the cement-based material test piece 10 is broken due to tensile stress, the lever arm 2 is rapidly inclined towards the direction of the counterweight 9, the protection upright post 4 can support the lever arm 2, and damage caused by rapid falling of the counterweight 9 is prevented.
Example 4:
the main structure of this embodiment is the same as that of embodiment 3, and further, referring to fig. 2, the U-shaped steel plate 3 includes a rectangular bottom plate ii 301 and two side plates 302, and one plate surface of the bottom plate ii 301 is perpendicularly connected to the two side plates 302. The two side plates 302 are parallel to each other, and the two side plates 302 are respectively close to two non-adjacent edges of the bottom plate II 301.
The inner side of each side plate 302 is provided with a plurality of shear keys 303. The two U-shaped steel plates 3 and the cement-based material test piece 10 are poured into a whole, and the plurality of shear keys 303 extend into the cement-based material test piece 10 to realize common stress.
Example 5:
the main structure of this embodiment is the same as that of embodiment 4, and further, the portions of the cement-based material test piece 10 clamped and fixed on the two U-shaped steel plates 3 are provided with protective coatings, and the surfaces of the two U-shaped steel plates 3 and the steel cable ii 11 are provided with protective coatings.
Example 6:
the main structure of this embodiment is the same as that of embodiment 5, and further, a sulfate solution is injected into the corrosion tank 5, and the two U-shaped steel plates 3, the cement-based material test piece 10 and the steel cable ii 11 are all soaked in the sulfate solution. Because the upper end and the lower end of the cement-based material test piece 10, the surfaces of the two U-shaped steel plates 3 and the steel stay II 11 are coated with protective coatings, the protective coatings are not corroded by sulfate solution, and the service life of the device is prolonged.
Example 7:
the main structure of this embodiment is the same as that of embodiment 6, and further, referring to fig. 1, a plurality of high-strength bolts 701 are arranged on the bottom plate i 7, and in the installation process, the plurality of high-strength bolts 701 are used for fixing the bottom plate i 7.
Example 8:
the main structure of this embodiment is the same as that of embodiment 7, and further, the counterweight 9 is a concrete test block.
Claims (7)
1. A cement-based material continuous tension loading device based on a lever method is characterized in that: comprises a column (1), a lever arm (2), a U-shaped steel plate (3), a corrosion tank (5) and a circulating water tank (6);
the upright post (1) and the corrosion tank (5) are connected to the same bottom plate I (7), and the upper end of the upright post (1) is hinged with a lever arm (2); one end of the lever arm (2) is positioned right above the corrosion tank (5), and the end is connected with a steel inhaul cable I (8); the other end of the lever arm (2) is connected with a counterweight (9);
the lower end of the steel cable I (8) is connected with a U-shaped steel plate (3), and the other U-shaped steel plate (3) is arranged below the U-shaped steel plate (3); the openings of the two U-shaped steel plates (3) are opposite, and an inherent cement-based material test piece (10) is clamped between the two U-shaped steel plates (3);
the lower end of the lower U-shaped steel plate (3) is connected with a steel stay II (11), and the steel stay II (11) is connected to the bottom of the corrosion tank (5); the two U-shaped steel plates (3), the cement-based material test piece (10) and the steel stay cable II (11) are all positioned in the corrosion tank (5);
the corrosion tank (5) is communicated with the circulating water tank (6) through a drain pipe (12).
2. The device for continuously loading the cement-based material in tension based on the lever method as claimed in claim 1, wherein: and a protective upright post (4) is arranged below the lever arm (2), and the protective upright post (4) is positioned between the counterweight (9) and the upright post (1).
3. The device for continuously loading the cement-based material in tension based on the lever method as claimed in claim 1, wherein: the U-shaped steel plate (3) comprises a rectangular bottom plate II (301) and two side plates (302), and one plate surface of the bottom plate II (301) is vertically connected with the two side plates (302); the two side plates (302) are parallel to each other, and the two side plates (302) are respectively close to two non-adjacent edges of the bottom plate II (301);
a plurality of shear keys (303) are arranged on the inner side of each side plate (302); the two U-shaped steel plates (3) and the cement-based material test piece (10) are poured into a whole, and the plurality of shear keys (303) extend into the cement-based material test piece (10).
4. The device for continuously loading the cement-based material in tension based on the lever method as claimed in claim 1, wherein: the cement-based material test piece (10) is clamped and fixed on the parts of the two U-shaped steel plates (3) and is provided with a protective coating, and the surfaces of the two U-shaped steel plates (3) and the steel stay cable II (11) are provided with the protective coatings.
5. The device for continuously loading the cement-based material in tension based on the lever method as claimed in claim 1, wherein: and a sulfate solution is injected into the corrosion tank (5), and the two U-shaped steel plates (3), the cement-based material test piece (10) and the steel cable II (11) are soaked in the sulfate solution.
6. The device for continuously loading the cement-based material in tension based on the lever method as claimed in claim 1, wherein: a plurality of high-strength bolts (701) are arranged on the base plate I (7).
7. The device for continuously loading the cement-based material in tension based on the lever method as claimed in claim 1, wherein: the counterweight (9) is a concrete test block, a sand bag or a steel counterweight.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921589876.9U CN211061325U (en) | 2019-09-23 | 2019-09-23 | Cement-based material continuous tension loading device based on lever method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921589876.9U CN211061325U (en) | 2019-09-23 | 2019-09-23 | Cement-based material continuous tension loading device based on lever method |
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| Publication Number | Publication Date |
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| CN211061325U true CN211061325U (en) | 2020-07-21 |
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| CN201921589876.9U Active CN211061325U (en) | 2019-09-23 | 2019-09-23 | Cement-based material continuous tension loading device based on lever method |
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| CN (1) | CN211061325U (en) |
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Effective date of registration: 20221207 Address after: No.83, Shabei street, Shapingba District, Chongqing 400044 Patentee after: Chongqing major construction project quality inspection Co.,Ltd. Address before: 400044 No. 174 Sha Jie street, Shapingba District, Chongqing Patentee before: Chongqing University |
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