Concrete block denudation depth measuring device for experimental simulation

Abstract

The utility model relates to the field of concrete block measurement, in particular to a concrete block denudation depth measuring device for experimental simulation, which comprises a measuring frame, three light beam emitting devices, a bearing adjusting mechanism and a depth meter, and is characterized in that the measuring frame is provided with a circumferential perspective area and a porous top plate; the three light beam emitting devices are installed in the circumferential perspective area, emitted light is parallel to the X-Y plane, the three light beam emitting devices project on the concrete block, the three light spots are not located on the same straight line and jointly determine a horizontal plane, and three mark points corresponding to the three light spots are marked on the circumferential wall of the concrete block; and the bearing adjusting mechanism is arranged in the measuring frame and is used for bearing the concrete block and adjusting the concrete block to enable each marking point to be aligned with one light spot. The depth meter is used for measuring the depth of each point on the top surface of the concrete block from the hole of the porous top plate. The concrete block denudation depth measuring device can reduce the damage caused by concrete block bottom denudation and the influence of inclination on the top denudation depth measuring result.

Description

Technical Field

[0001] The utility model relates to the field of concrete block measurement, in particular to a concrete block erosion depth measuring device for experimental simulation, which can be further used for roughness evaluation of concrete surface. Background Art

[0002] After being washed by water, the surface of the water channel will peel off. To evaluate the degree of damage to the concrete, the depth of surface erosion can be measured. When the depth of erosion reaches a certain critical value, it is considered to be damaged. In addition, in order to ensure the quality of the roughening treatment of the concrete interface during reinforcement, the surface chiseling depth can also be used to quantitatively evaluate the roughness of the concrete interface.

[0003] The water delivery channels used in actual projects will be damaged by the coupling of multiple factors, such as freeze-thaw, dissolution, scouring, etc. Concrete blocks are often used to simulate this destructive process in the laboratory. Before and after the experiment, the depth of multiple points on the top surface of the concrete block is measured. The difference between the mean values ​​measured on both sides is the erosion depth of the top surface of the concrete block. However, in addition to the peeling of the top surface of the specimen, the bottom surface will also peel off during the experiment. However, the existing measurement method does not take into account that the flatness of the bottom of the specimen will affect the measurement results. Therefore, when the concrete block is placed on the measuring table after the experiment, the erosion of the bottom surface will cause the entire specimen to sink and tilt, which will ultimately affect the accuracy of the top surface erosion depth measurement.

[0004] To address this problem, we proposed a depth measurement device that takes into account the impact of damage on the bottom surface of the specimen on the top surface depth measurement value. It can be used to measure the depth of hydraulic concrete erosion and further quantitatively evaluate the roughness of the concrete interface. Summary of the invention

[0005] The technical problem to be solved by the utility model is to overcome the defects of the prior art and provide a concrete block erosion depth measuring device for experimental simulation, which can reduce the damage caused by the erosion of the bottom surface of the concrete block and the influence of the inclination on the top surface erosion depth measurement result.

[0006] In order to solve the above technical problems, the technical solution of the utility model is: a concrete block erosion depth measurement device for experimental simulation, comprising:

[0007] A measuring frame having a circumferential perspective area and a porous top plate;

[0008] Three light beam emitting devices are respectively installed in the circumferential perspective area, and the emitted light is parallel to the XY plane. The three light beam emitting devices are projected onto the concrete block, and the three light spots are not on the same straight line, and jointly determine a horizontal plane. The circumferential wall of the concrete block is marked with three marking points corresponding to the three light spots;

[0009] The load-bearing adjustment mechanism is placed in the measuring frame and is used for bearing the concrete block; and adjusting the concrete block so that each marking point is aligned with a light point.

[0010] A depth gauge is used to measure the depth of each point on the top surface of the concrete block from the holes of the porous top plate.

[0011] Furthermore, the load-bearing adjustment mechanism includes a motion platform and at least three support components; wherein:

[0012] The support assembly is installed on the motion platform and is height-adjustable, and at least three support assemblies are not in the same straight line and are used to jointly support the concrete block;

[0013] The motion platform is at least used to drive the support assembly to move along the X-axis and the Y-axis.

[0014] Furthermore, the supporting assembly is a bolt, and the bolt is threadedly connected to the moving platform.

[0015] Furthermore, the motion platform is a three-axis motion platform, and is also used to drive the support assembly to move in the Z axis.

[0016] Furthermore, the front wall, rear wall, left wall and right wall of the measuring frame are all transparent plates, which together form the circumferential perspective area.

[0017] Furthermore, before the experiment, the concrete block was a rectangular parallelepiped, and the three marking points were located on the same horizontal plane.

[0018] Furthermore, the three marking points are located at the center points of the three peripheral surfaces of the concrete block.

[0019] Furthermore, the porous top plate is a steel plate.

[0020] Furthermore, the porous top plate is a replaceable structure.

[0021] After adopting the above technical scheme, the experimental simulation concrete block erosion depth measuring device in the utility model can make the planes determined by the three marking points of the concrete block in the two measurements before and after the experiment both be horizontal planes and located at the same height, thereby reducing the influence of the bottom surface loss and inclination of the concrete block on the top surface erosion depth measurement value and improving the accuracy of the measurement result. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural schematic diagram of a concrete block erosion depth measuring device for experimental simulation of the utility model;

[0023] In the figure, 1. measuring frame; 11. circumferential perspective area; 12. porous top plate; 2. light beam emitting device; 3. load-bearing adjustment mechanism; 31. motion platform; 32. support assembly; 4. depth gauge; 5. data transmission line. DETAILED DESCRIPTION

[0024] In order to make the content of the utility model more clearly understood, the utility model is further described in detail below based on specific embodiments and in conjunction with the accompanying drawings.

[0025] like Figure 1 As shown, a device for measuring the erosion depth of concrete blocks for experimental simulation comprises:

[0026] The measuring frame 1 has a circumferential perspective area 11 and a porous top plate 12;

[0027] Three light beam emitting devices 2 are respectively installed in the circumferential perspective area 11, and the emitted light is parallel to the XY plane. The three light beam emitting devices 2 project three light spots on the concrete block that are not in the same straight line and jointly determine a horizontal plane. The circumferential wall of the concrete block is marked with three marking points corresponding to the three light spots.

[0028] The load-bearing adjustment mechanism 3 is placed in the measuring frame 1 and is used to bear the concrete block and adjust the concrete block so that each marking point is aligned with a light point.

[0029] The depth gauge 4 is used to measure the depth of each point on the top surface of the concrete block from the holes of the porous top plate 12.

[0030] The specific process of measuring the erosion depth of concrete blocks based on the entire device is as follows:

[0031] The first step is to place the concrete block on the load adjustment mechanism 3 before the experiment, and then adjust the load adjustment mechanism 3 so that each mark point on the concrete block is aligned with a light point. At this time, the plane formed by the three mark points of the concrete block coincides with the plane formed by the three light points.

[0032] In the second step, the depth of multiple points on the top surface of the concrete block is measured from multiple holes of the porous top plate 12 by the depth gauge 4, and the average value is taken. A series of depth data at equally spaced points on a straight line can also be recorded, which is then used for roughness evaluation before the spalling test;

[0033] In the third step, after the spalling test, the concrete block is placed on the load adjustment mechanism 3 again, and the position of the concrete block is adjusted by the load adjustment mechanism 3 again, so that each mark point on the concrete block is aligned with a light point. At this time, the plane formed by the three mark points of the concrete block and the plane formed by the three light points coincide with each other again. That is to say, in this step, the plane where the three mark points of the concrete block are located coincides with the plane where the three mark points are located in step 1, and they are all horizontal planes and located at the same height;

[0034] In the fourth step, the depth of multiple points on the top surface of the concrete block is measured from multiple holes of the porous top plate 12 by the depth gauge 4, and the average value is taken. A series of depth data at equally spaced points on a straight line can also be recorded, which is then used for roughness evaluation after the peeling test;

[0035] The fifth step is to calculate the difference between the average value of the fourth step and the average value of the second step, which is the erosion depth of the top surface of the concrete block.

[0036] Specifically, the erosion depth calculated through the above steps reduces the influence of the bottom surface loss and inclination of the concrete block on the top surface erosion depth measurement value, thereby improving the accuracy of the measurement result.

[0037] The holes on the porous top plate 12 can limit the depth gauge 4. The hole spacing of the porous top plate 12 defines the density of the measuring points. The porous top plate 12 can ensure that the density of the measuring points of the concrete block is consistent before and after the experiment.

[0038] Preferably, the concrete block is a cuboid before the experiment, and the three marking points are located on the same horizontal plane. More preferably, the three marking points are located at the center points of the three peripheral surfaces of the concrete block. The three light beam emitting devices 2 are also installed on the three peripheral surfaces of the three measuring frames 1, and the emitted light extends along the X direction or the Y direction.

[0039] The load-bearing adjustment mechanism 3 only needs to be able to bear the concrete block and level the plane where the three marking points of the concrete block are located. The criterion for judging whether the plane is leveled is that each marking point is aligned with a light spot. Figure 1 As shown, the load-bearing adjustment mechanism 3 may be, but is not limited to, a motion platform 31 and at least three support assemblies 32; wherein the support assemblies 32 are mounted on the motion platform 31 and are height-adjustable, and at least three support assemblies 32 are not in the same straight line and are used to jointly support the concrete block; the motion platform 31 is at least used to drive the support assemblies 32 to move in the X-axis and the Y-axis.

[0040] When changing the measuring point, the depth gauge 4 can be inserted from different holes of the porous top plate 12, or the same hole can be used to fine-tune the position of the concrete block on the X-axis and Y-axis through the motion platform 31. When the hole spacing of the porous top plate 12 cannot meet the measuring point spacing, the second method can be used.

[0041] The number of the support assemblies 32 can be three, four, five, etc., preferably four, and each support assembly 32 supports one corner of the concrete block.

[0042] like Figure 1 As shown, the support assembly 32 can be made of bolts, which are threadedly connected to the motion platform 31, and the height of the bolts can be adjusted by screwing the bolts.

[0043] like Figure 1 As shown, the motion platform 31 can also be a three-axis motion platform 31, and is also used to drive the support assembly 32 to move in the Z axis. By coarsely adjusting the height of the motion platform 31 and finely adjusting the local height of the support assembly 32, each marking point can be easily aligned with a light spot.

[0044] like Figure 1 As shown, the front wall, rear wall, left wall and right wall of the measuring frame 1 are all transparent plates, which together form a circumferential perspective area 11. In this way, it is convenient to observe the condition of the concrete block in the measuring frame 1 on the one hand, and it is convenient to accurately judge whether the light spot is aligned with the marking point on the other hand. A light beam emitting device 2 can be installed on each of the rear wall, left wall and right wall, and the front wall is an openable door.

[0045] like Figure 1 As shown, the porous top plate 12 is a steel plate. The porous top plate 12 is made of a steel plate. Even if it is used for a long time, the porous steel plate will not be deformed, and the size of the holes will not change, so the accuracy of the measurement can be guaranteed.

[0046] In addition, the porous top plate 12 of the measuring frame 1 is a replaceable structure, and can be equipped with multiple porous top plates 12 with different hole diameters and hole spacings. The corresponding porous top plate 12 is selected according to the density of the measuring points.

[0047] like Figure 1 As shown, the depth gauge 4 can be a digital depth gauge, etc. The depth gauge can be connected to a computer via a data transmission line 5, and the measured value is sent to the computer for recording via the data transmission line 5.

[0048] Based on the above ideal embodiments of the utility model, the relevant staff can make various changes and modifications without deviating from the technical concept of the utility model through the above description. The technical scope of the utility model is not limited to the content of the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A device for measuring the erosion depth of concrete blocks for experimental simulation, characterized in that: include: A measuring frame (1) having a circumferential perspective area (11) and a porous top plate (12); Three light beam emitting devices (2) are respectively installed in the circumferential perspective area (11), and the emitted light beams are parallel to the XY plane. The three light beam emitting devices (2) are projected onto the concrete block, and the three light spots are not on the same straight line, and jointly define a horizontal plane. The circumferential wall of the concrete block is marked with three marking points corresponding to the three light spots. A load-bearing adjustment mechanism (3) is placed in the measuring frame (1) and is used to bear the concrete block; and to adjust the concrete block so that each marking point is aligned with a light point. A depth gauge (4) is used to measure the depth of each point on the top surface of the concrete block from the holes of the porous top plate (12).

2. The device for measuring the erosion depth of concrete blocks for experimental simulation according to claim 1, characterized in that: The load-bearing adjustment mechanism (3) comprises a motion platform (31) and at least three support components (32); wherein: The support assembly (32) is mounted on the motion platform (31) and is height-adjustable, and at least three support assemblies (32) are not in the same straight line and are used to jointly support the concrete block; The motion platform (31) is at least used to drive all supporting components (32) to move along the X-axis and the Y-axis.

3. The device for measuring the erosion depth of concrete blocks for experimental simulation according to claim 2, characterized in that: The support assembly (32) is a bolt, and the bolt is threadedly connected to the motion platform (31).

4. The device for measuring the erosion depth of concrete blocks for experimental simulation according to claim 2, characterized in that: The motion platform (31) is a three-axis motion platform (31), and is also used to drive the support assembly (32) to move along the Z axis.

5. The device for measuring the erosion depth of concrete blocks for experimental simulation according to claim 1, characterized in that: The front wall, rear wall, left wall and right wall of the measuring frame (1) are all transparent plates, and together form the circumferential perspective area (11).

6. The device for measuring the erosion depth of concrete blocks for experimental simulation according to claim 1, characterized in that: Before the experiment, the concrete block was a cuboid, and the three marking points were located on the same horizontal plane.

7. The device for measuring the erosion depth of concrete blocks for experimental simulation according to claim 1, characterized in that: The three marking points are located at the center points of the three circumferences of the concrete block.

8. The device for measuring the erosion depth of concrete blocks for experimental simulation according to claim 1, characterized in that: The porous top plate (12) is a steel plate.

9. The device for measuring the erosion depth of concrete blocks for experimental simulation according to claim 1, characterized in that: The porous top plate (12) is a replaceable structure.

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