Concrete column eccentric loading device adaptive to multiple eccentric distances

Abstract

The utility model provides a kind of concrete column eccentric loading device suitable for multiple eccentricity, including the loading plate being connected with loading machine and the pressure plate being set above concrete column, loading head is equipped below the loading plate, V-shaped groove corresponding with the loading head is equipped above the pressure plate, multiple V-shaped grooves are equipped at intervals, when multiple eccentricity test is needed, loading head is moved to the corresponding interval above corresponding V-shaped groove, then test starts, so that the test problem of multiple eccentricity of concrete column eccentric loading test is solved, by connecting screw rod and guiding device on loading head, the position of loading head can be adjusted by screw rod, and loading head can be moved to the next V-shaped groove.

Description

Technical Field

[0001] This utility model relates to the field of civil engineering construction technology, and in particular to an eccentric loading device for concrete columns that can adapt to various eccentricities. Background Technology

[0002] The eccentric loading test of concrete columns is one of the basic tests in civil engineering. In the traditional eccentric compression test of concrete columns, when loading the member, the loading device can usually only perform the loading test for one eccentricity. When there are other different eccentricities between the concrete column and the eccentric load, the traditional loading device cannot directly perform eccentric loading on the concrete column, and a series of auxiliary testing tools are needed to complete the test. Utility Model Content

[0003] The purpose of this invention is to provide an eccentric loading device for concrete columns that can adapt to multiple eccentricities, so as to solve the technical problem that eccentric loading tests on concrete columns can only be conducted for one type of eccentricity.

[0004] To solve the above-mentioned technical problems, this utility model provides an eccentric loading device for concrete columns that can adapt to various eccentricities, including a loading plate connected to a loader and a bearing plate set above the concrete column. A loading head is provided below the loading plate, and a V-shaped groove corresponding to the loading head is provided above the bearing plate. The V-shaped grooves are arranged at intervals.

[0005] In a preferred embodiment, a limiting plate is provided between the bearing plate and the concrete column. The limiting plate includes a first plate, a second plate perpendicular to the first plate, and a rib plate disposed between the first plate and the second plate. The first plate has multiple through holes, and the bearing plate has matching elongated slots. During installation, the bearing plate and the limiting plate are fixed by fasteners passing through the through holes and the elongated slots. The second plate has multiple first through holes, and the concrete column has a fourth through hole. The second plate and the concrete column are fixed by fasteners passing through the first through holes and the fourth through hole.

[0006] In the preferred embodiment, lifting rings are provided on the sides of the pressure plate and the loading plate.

[0007] In a preferred embodiment, a sinkhole is provided below the loading plate, and a guide device is provided in the sinkhole. The loading head is slidably connected to the sinkhole through the guide device. The loading head is rotatably connected to a screw in the direction of movement of the guide device. The screw passes through the loading plate and is threadedly connected to the loading plate.

[0008] In a preferred embodiment, a third through hole is provided on one side of the loading head, the screw passes through the third through hole, and nuts are provided on the screws on both sides of the loading head.

[0009] In a preferred embodiment, the guiding device includes a dovetail block disposed below the loading plate and a dovetail groove disposed on the loading head that matches the dovetail block.

[0010] The beneficial effects of this invention are as follows: By setting multiple V-grooves at certain intervals on the bearing plate, when different eccentricity tests are required, the loading head can be moved to the V-groove corresponding to the target eccentricity to start the test, thus realizing loading tests on concrete columns under various eccentricity conditions. Furthermore, by connecting a screw and a guide device to the loading head, the position of the loading head can be adjusted using the screw, allowing the loading head to move accurately and conveniently to the position corresponding to the next V-groove. Attached Figure Description

[0011] The present invention will be further described below with reference to the accompanying drawings and embodiments: Figure 1 This is a front view structural diagram of Embodiment 1 of this utility model; Figure 2 This is a side view of Embodiment 1 of the present invention; Figure 3 This is a structural diagram of the limiting plate in Embodiment 1 of this utility model; Figure 4 This is a structural diagram of the loading head installation in Embodiment 2 of this utility model; Figure 5 This is a side view of the loading head installation structure in Embodiment 2 of this utility model; Figure 6 This is a structural diagram of the guide device in Embodiment 2 of this utility model.

[0012] Reference numerals: 10 Concrete column; 1 Loading plate; 11 Sink; 12 Screw; 13 Nut; 14 Dovetail block; 15 Dovetail groove; 2 Loading head; 3 Bearing plate; 4 Limiting plate; 41 First plate; 42 Second plate; 43 Rib; 8 Lifting ring; 301 V-groove; 302 Long slot hole; 402 First through hole; 7 Second through hole. Detailed Implementation

[0013] Example 1: Please refer to Figure 1-6 As shown, the present application provides a technical solution: an eccentric loading device for concrete columns that adapts to multiple eccentricities, including a loading plate 1 connected to a loader and a bearing plate 3 set above the concrete column 10, a loading head 2 provided below the loading plate 1, and a V-shaped groove 301 corresponding to the loading head 2 provided above the bearing plate 3, the V-shaped grooves 301 being arranged at intervals.

[0014] A loader is a device used for testing the mechanical properties of materials, and it is widely used in fields such as construction and geological engineering, which will not be elaborated on here. A second through hole 7 for connecting the loader is also provided above the pressure plate 3.

[0015] Using the above structure, when testing an eccentric loading test at a fixed distance, it is only necessary to align the loading head 2 with one V-groove 301. When testing eccentric loading tests at multiple distances, the V-groove 301 corresponding to the required distance is found on the V-groove 301. During the test, the loading head 2 is moved above the corresponding V-groove 301 and the test is carried out. In this way, by setting multiple V-grooves 301, eccentric loading tests with multiple eccentric distances can be achieved.

[0016] In a preferred embodiment, a limiting plate 4 is provided between the bearing plate 3 and the concrete column 10. The limiting plate 4 includes a first plate 41, a second plate 42 perpendicular to the first plate 41, and a rib plate 43 disposed between the first plate 41 and the second plate 42. The first plate 41 has multiple through holes, and the bearing plate 3 has matching elongated slots 302. During installation, the bearing plate 3 and the limiting plate 4 are fixed by fasteners passing through the through holes and the elongated slots 302. The second plate 42 has multiple first through holes 402, and the concrete column 10 has a fourth through hole. The second plate 42 and the concrete column 10 are fixed by fasteners passing through the first through holes 402 and the fourth through hole.

[0017] Using the above structure, the rib plate 43 can be welded to connect the first plate 41 and the second plate 42 into a whole. By setting the long slot 302 on the pressure plate 3, the pressure plate 3 and the limiting plate 4 can be connected together. The installation position of the pressure plate 3 can also be adjusted within a certain range. Through this tight connection method, the pressure plate 3 can be quickly disassembled and replaced, and eccentric loading tests at different distances can be realized.

[0018] In the preferred embodiment, lifting rings 8 are provided on the sides of the pressure plate 3 and the loading plate 1.

[0019] With the above structure, when moving the pressure plate 3 and the loading plate 1, the lifting ring 8 can be connected by a crane to move the pressure plate 3 and the loading plate 1 to the installation position.

[0020] Example 2: Further explanation in conjunction with Example 1; This embodiment is a further optimized design based on Embodiment 1. Repeated content will not be described here; only the differences from Embodiment 1 will be described. These differences are as follows: In a preferred embodiment, a sink 11 is provided below the loading plate 1, and a guide device is provided in the sink 11. The loading head 2 is slidably connected in the sink 11 through the guide device. The loading head 2 is rotatably connected to a screw 12 in the direction of movement of the guide device, and the screw 12 is threadedly connected to the loading plate 1.

[0021] With the above structure, the sink 11 can be a rectangular structure. A handle is provided on the outside of the screw 12. When rotating the screw 12, the handle can be held and rotated. Since the screw 12 is threadedly connected to the loading plate 1, when the screw 12 is rotated, the screw 12 drives the loading head 2 to move along the guide device. This allows the position of the loading head 2 to be moved so that the loading head 2 corresponds to different V-grooves 301 for testing.

[0022] In a preferred embodiment, a third through hole is provided on one side of the loading head 2, the screw 12 passes through the third through hole, and nuts 13 are provided on the screws 12 on both sides of the loading head 2.

[0023] With the above structure, when the screw 12 is rotated, the screw 12 drives the nut 13 to move, and the nut 13 drives the loading head 2 to move. The part of the screw 12 that passes through the third through hole does not need to be threaded, and there is a clearance fit between it and the through hole.

[0024] In a preferred embodiment, the guiding device includes a dovetail block 14 disposed below the loading plate 1 and a dovetail groove 15 disposed on the loading head 2 that matches the dovetail block 14.

[0025] With the above structure, the dovetail block 14 and the dovetail groove 15 have more upper and lower contact surfaces. When the loading head 2 is pressed down, the local pressure on the loading head 2 can be reduced through the surface contact between the dovetail block 14 and the dovetail groove 15, thereby improving the life of the loading head 2.

[0026] The above embodiments are merely preferred technical solutions of this utility model and should not be considered as limitations on this utility model. The protection scope of this utility model should be the technical solution described in the claims, including equivalent substitutions of the technical features described in the claims. That is, equivalent substitutions and improvements within this scope are also within the protection scope of this utility model.

Claims

1. An eccentric loading device for concrete columns adaptable to various eccentricities, characterized in that: It includes a loading plate (1) connected to a loader and a bearing plate (3) set above a concrete column (10). A loading head (2) is provided below the loading plate (1), and a V-shaped groove (301) corresponding to the loading head (2) is provided above the bearing plate (3). The V-shaped grooves (301) are arranged at intervals.

2. The eccentric loading device for concrete columns adaptable to multiple eccentricities according to claim 1, characterized in that: A limiting plate (4) is provided between the bearing plate (3) and the concrete column (10). The limiting plate (4) includes a first plate (41), a second plate (42) perpendicular to the first plate (41), and a rib plate (43) provided between the first plate (41) and the second plate (42). The first plate (41) has multiple through holes, and the bearing plate (3) has matching elongated slots (302). During installation, the bearing plate (3) and the limiting plate (4) are fixed by fasteners passing through the through holes and the elongated slots (302). The second plate (42) has multiple first through holes (402), and the concrete column (10) has a fourth through hole. The second plate (42) and the concrete column (10) are fixed by fasteners passing through the first through holes (402) and the fourth through hole.

3. The eccentric loading device for concrete columns adaptable to multiple eccentricities according to claim 1, characterized in that: Lifting rings (8) are provided on the sides of the pressure plate (3) and the loading plate (1).

4. The eccentric loading device for concrete columns adaptable to multiple eccentricities according to claim 1, characterized in that: A sinker (11) is provided below the loading plate (1), and a guide device is provided in the sinker (11). The loading head (2) is slidably connected in the sinker (11) through the guide device. The loading head (2) is rotatably connected to a screw (12) in the direction of movement of the guide device. The screw (12) passes through the loading plate (1) and is threadedly connected to the loading plate (1).

5. The eccentric loading device for concrete columns adaptable to multiple eccentricities according to claim 4, characterized in that: The loading head (2) has a third through hole on one side, and the screw (12) passes through the third through hole. Nuts (13) are provided on the screws (12) on both sides of the loading head (2).

6. The eccentric loading device for concrete columns adaptable to multiple eccentricities according to claim 4, characterized in that: The guiding device includes a dovetail block (14) disposed below the loading plate (1) and a dovetail groove (15) disposed on the loading head (2) that matches the dovetail block (14).

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