Novel fluidized soil dynamic fluidity testing device

Abstract

The utility model discloses a novel fluidized soil dynamic fluidity testing device, which belongs to the field of civil engineering and comprises a support iron stand, a slurry cleaner, a transparent glass plate and a cylinder. The supporting iron frame comprises four vertical rods, four cross rods and a bottom plate, checks with the same size are engraved on the surface of the bottom plate, and the slurry cleaner comprises a push rod and an annular scraper. According to the utility model, the transparent glass plate at the bottom of the cylinder is rapidly drawn out at the test height, so that fluidized soil in the cylinder freely falls on the bottom plate, and the corresponding area is converted according to the number of grids occupied by the fluidized soil on the bottom plate, thereby obtaining the dynamic fluidity of the fluidized soil. The testing device disclosed by the utility model is simple in structure, convenient to operate and capable of simply, conveniently and effectively testing the dynamic fluidity of the fluidized soil.

Description

Technical Field

[0001] The utility model belongs to the field of civil engineering, in particular to a novel fluidized soil dynamic fluidity testing device. Background Art

[0002] Fluidized soil is a new type of geotechnical engineering material with high fluidity and low strength, composed of soil, water, and admixtures. It does not require vibration, fills itself, and forms a self-compacting structure under the action of its own weight. In order to evaluate the construction performance of fluidized soil on site, it is necessary to test the fluidity of the fluidized soil to ensure that it can meet specific requirements in the construction project. The current fluidity test device only measures static fluidity, which cannot reflect the actual situation of on-site construction because the pouring of fluidized soil on site is dynamic, that is, the pouring of fluidized soil has a certain free fall height. Moreover, the current static fluidity test device calculates the average value of fluidity by measuring the lengths in two vertical directions. This test method has a large error and cannot reflect the true fluidity of the fluidized soil. To this end, in response to the above situation, we propose a new type of dynamic fluidity test device for fluidized soil. This test device can realize the determination of the dynamic fluidity of fluidized soil and overcome the defects existing in the current static fluidity test. Utility Model Content

[0003] The purpose of the utility model is to overcome the deficiencies of the prior art and to provide a device which has a simple structure and is reliable and can measure the dynamic fluidity of fluidized soil.

[0004] To achieve the above purpose, the present invention provides the following solutions:

[0005] A novel fluidized soil dynamic fluidity testing device comprises an iron support frame, a mud cleaner, a glass plate (4) and a cylinder (5); a bottom plate (6) is provided at the bottom of the iron support frame, four vertical rods (2) fixedly connected to the bottom plate (6) are arranged in the middle, two horizontal outer cross bars (1) connected to the vertical rods (2) are arranged at the top, the two outer cross bars (1) are connected by two inner cross bars (3), and the surface of the bottom plate (6) is engraved with squares of the same size; the mud cleaner comprises a push rod (8) and an annular scraper (9).

[0006] The side surface of the vertical rod (2) is marked with scale.

[0007] The outer cross bar (1) connected to the vertical bar (2) is provided with screw holes at both ends, the inner diameter of the screw holes is 2 mm larger than the diameter of the vertical bar (2), the vertical bar (2) passes through the screw holes and is connected to the outer cross bar (1), and a small screw hole with a diameter of 3 mm is provided on the side of the screw hole, and the height of the outer cross bar (1) can be fixed by screws in the small screw holes.

[0008] The annular scraper (9) has a circular cross section and a frustum shape, and is made of wear-resistant, acid-resistant, and alkali-resistant plastic.

[0009] The bottom plate (6) is square, and is engraved with square grids of the same size in a centrally symmetrical form, and the surface is covered with a layer of transparent lubricating film (7).

[0010] The glass plate (4) is square, and its side length is 2 cm greater than the outer diameter of the cylinder (5).

[0011] A thickened ring belt is provided on the outer side of the upper portion of the cylinder (5) for supporting on the inner cross bar (3).

[0012] Beneficial effects:

[0013] 1. The surface of the bottom plate of the device is provided with a lubricating film (7), which can prevent fluidized soil from adhering to the bottom plate (6), thus achieving the goal of eliminating the need to clean the bottom plate.

[0014] 2. The surface of the bottom plate (6) of the device is engraved with squares of a certain size. The area of ​​the fluidized soil is calculated by the squares, and then the diameter is calculated using the area formula of a circle, and then the dynamic fluidity of the fluidized soil is obtained, thereby achieving a fast and accurate measurement of the dynamic fluidity of the fluidized soil.

[0015] 3. The mud cleaner can quickly scrape away the attached soil inside the cylinder (5), which is beneficial to the cleaning of the cylinder and reduces the waste of fluidized soil.

[0016] 4. The device performs dynamic fluidity tests at different heights by raising and lowering the outer crossbar (1), which not only realizes the dynamic fluidity test but also can more realistically reflect the on-site pouring construction of fluidized soil. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the fluidized soil dynamic fluidity testing device of the present utility model.

[0018] Figure 2 The figure is a schematic diagram of a mud cleaner of a fluidized soil dynamic fluidity testing device of the present invention.

[0019] Figure 3 It is a schematic diagram of the cylinder (5) of the fluidized soil dynamic fluidity testing device of the present utility model.

[0020] Figure 4 This is a schematic diagram of the outer crossbar (1) of the fluidized soil dynamic fluidity testing device of the present invention.

[0021] In the figure: 1. outer crossbar; 2. vertical bar; 3. inner crossbar; 4. glass plate; 5. cylinder; 6. bottom plate; 7. lubricating film; 8. push rod; 9. annular scraper. DETAILED DESCRIPTION

[0022] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the embodiments described are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0023] Example:

[0024] like Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 As shown:

[0025] The utility model discloses a novel fluidized soil dynamic fluidity testing device, comprising a supporting iron frame, a mud cleaner, a glass plate (4) and a cylinder (5).

[0026] The support iron frame comprises an outer crossbar (1), a vertical bar (2), an inner crossbar (3) and a bottom plate (6); the outer crossbar (1) is 44.4 cm long, with screw holes at both ends, the inner diameter of the screw holes is 2.2 cm, the vertical bars pass through the screw holes and are connected to the outer crossbar (1), and small screw holes with a diameter of 3 mm are provided on the sides of the screw holes, and the height of the outer crossbar (1) can be fixed by screws in the small screw holes; the vertical bars (2) are 2 cm in diameter and 30 cm in length, with a mutual spacing of 40 cm, and a scale of 1 to 25 cm is engraved on the sides, and are fixedly connected to the bottom plate (6); the inner crossbar (3) is 40 cm long, and the spacing between the two inner crossbars (3) is 11.4 cm, connected between the two outer crossbars (1), and used to support the cylinder (5); the bottom plate (6) has a side length of 44 cm and a thickness of 2 cm, and the surface of the plate is engraved with squares with a side length of 4 mm and covered with a layer of transparent slippery film (7), and the squares are symmetrically arranged around the center of the bottom plate (6).

[0027] The mud cleaner comprises a push rod (8) and an annular scraper (9); the push rod (8) is a cylinder with a cross-sectional diameter of 2 cm and a height of 10 cm; the annular scraper (9) is a frustum with an upper diameter of 9.8 cm and a lower diameter of 8 cm.

[0028] The glass plate (4) is a square with a side length of 13 cm.

[0029] The cylinder (5) has an inner diameter of 10 cm, an outer diameter of 11 cm, and a height of 10 cm. A 2 cm thickened ring belt is provided on the outer side of the upper portion for supporting the inner crossbar (3).

[0030] Working with the above detection device, the specific steps are as follows:

[0031] When in use, a glass plate (4) is placed under the cylinder (5), and the prepared fluidized soil is poured into the cylinder (5), vibrated and compacted, and then scraped flat. Then, the two are placed on a supporting iron frame, and finally, the glass plate (4) is quickly pulled out, allowing the fluidized soil to fall freely onto the bottom plate (6). When the fluidized soil is stationary, the number of all squares within the boundary range of the fluidized soil on the bottom plate (6) is calculated, and the area covered by the fluidized soil on the surface of the bottom plate (6) is calculated based on the area of ​​the squares. Finally, the diameter of the fluidized soil is calculated based on the area of ​​the circle, which is the dynamic fluidity of the fluidized soil.

[0032] Finally, it should be noted that the above are only embodiments of the present invention and do not limit the patent scope of the present invention. For those skilled in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the attached claims and their equivalents.

Claims

1. A new type of fluidized soil dynamic fluidity testing device, characterized in that: The invention comprises a supporting iron frame, a mud cleaner, a glass plate (4) and a cylinder (5); a bottom plate (6) is provided at the lower part of the supporting iron frame, four vertical rods (2) fixedly connected to the bottom plate (6) are provided in the middle, two horizontal outer cross bars (1) connected to the vertical rods (2) are provided at the upper part, the two outer cross bars (1) are connected by two inner cross bars (3), and the surface of the bottom plate (6) is engraved with squares of the same size; the mud cleaner comprises a push rod (8) and an annular scraper (9).

2. A novel fluidized soil dynamic fluidity testing device according to claim 1, characterized in that: The side of the vertical rod (2) is marked with scales.

3. A novel fluidized soil dynamic fluidity testing device according to claim 1, characterized in that: Screw holes are provided at both ends of the outer crossbar (1) connected to the vertical rod (2). The inner diameter of the screw holes is 2 mm larger than the diameter of the vertical rod (2). The vertical rod (2) passes through the screw holes and is connected to the outer crossbar (1). Small screw holes with a diameter of 3 mm are provided on the sides of the screw holes. The height of the outer crossbar (1) can be fixed by screws in the small screw holes.

4. A novel fluidized soil dynamic fluidity testing device according to claim 1, characterized in that: The annular scraper (9) has a circular cross section and a frustum shape, and is made of wear-resistant, acid-resistant, and alkali-resistant plastic.

5. A novel fluidized soil dynamic fluidity testing device according to claim 1, characterized in that: The bottom plate (6) is a square, and is engraved with square grids of the same size in a centrally symmetrical form. The surface is covered with a layer of transparent slippery film (7).

6. A novel fluidized soil dynamic fluidity testing device according to claim 1, characterized in that: The glass plate (4) is a square, and its side length is 2 cm greater than the outer diameter of the cylinder (5).

7. A novel fluidized soil dynamic fluidity testing device according to claim 1, characterized in that: A thickened ring belt is provided on the outer side of the upper portion of the cylinder (5) for supporting on the inner cross bar (3).

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