Device for testing bending performance of reinforced concrete beam

Abstract

The invention relates to the field of performance testing, and discloses a bending performance testing device for a reinforced concrete beam. A supporting table is welded to the upper surface of a bottom plate, a buffer plate is arranged on the upper surface, corresponding to the supporting table, of the bottom plate, an adjusting column is movably connected to the inner surface of the supporting table, a side supporting column is movably inserted into the outer surface of the upper end of the adjusting column, an upper cover plate is movably inserted into the upper surface of the side supporting column, and a connecting transverse rod is movably inserted into the outer surface of the upper end of the adjusting column. The two ends of the cross beam are prevented from moving towards the two sides by inserting the side supporting columns, the cross beams with different lengths can be conveniently tested, the other layer of the adjusting columns, the side supporting columns and the upper cover plate is used for fixing the adjusting columns, the side supporting columns and the upper cover plate when the bending performance of the cross beam is tested, and the two sides can be conveniently connected by penetrating the connecting cross rods through the adjusting columns. Connection stress of corresponding cross beam positions of the buildings is simulated at two sides, so that the actual external force resistance level in the designed building can be conveniently tested.

Description

Technical Field

[0001] The invention belongs to the technical field of performance testing, and in particular relates to a device for testing the bending performance of a reinforced concrete beam. Background Art

[0002] The beam bending performance test device is a device specially used to evaluate and study the performance of beams under bending forces. In the process of testing the bending performance of beams, the measuring subject obtains key data through a series of precise measurement methods. Among them, measuring the length and depth of cracks caused by bending of beams is a crucial step. This process involves the use of high-precision measurement tools and methods to ensure the reliability and accuracy of the data. When measuring the length of cracks caused by bending of beams, special measuring instruments can be used. In addition to the crack length, the depth of the crack is also an important parameter.

[0003] However, traditionally, tests are conducted under ideal conditions, and there are many factors that affect the bending performance of beams. For example, whether the building is located in a high-risk earthquake zone, whether the building is located in a humid environment such as the coastal area, and is easily eroded by rainwater. These factors are not reference factors in traditional testing devices. Summary of the invention

[0004] The purpose of the present invention is to provide a reinforced concrete beam bending performance test device to solve the problem that the above-mentioned traditional tests are all carried out under ideal conditions, while the bending performance of the beam is usually affected by many factors, such as whether the building is located in a high-risk earthquake zone, whether the building is located in a humid environment such as a coastal area, and is easily eroded by rainwater, etc. These factors do not have reference factors in traditional testing devices.

[0005] The technical solution adopted by the present invention is as follows: a reinforced concrete beam bending performance testing device, comprising a base plate, a support platform welded to the upper surface of the base plate, a buffer plate is arranged on the upper surface of the base plate corresponding to the support platform, an adjustment column is movably connected to the inner surface of the support platform, a side support column is movably inserted into the outer surface of the upper end of the adjustment column, an upper cover plate is movably inserted into the upper surface of the side support column, and a connecting cross bar is movably inserted into the outer surface of the upper end of the adjustment column.

[0006] By adopting the above technical scheme, a support platform is taken as the foundation in the middle of the bottom plate, and the filled buffer plate is used to buffer the support platform. The adjustment column is lifted by a crane and moved in the groove of the support platform to complete the placement. The side support columns are inserted at both ends to prevent the reinforced concrete beam to be measured from shifting to both sides. The upper cover plate is also used to complete the fixation of the beam to facilitate the testing of beams of different lengths. The other function of the adjustment column, the side support column and the upper cover plate is to facilitate the connection on both sides by fixing the adjustment column, the side support column and the upper cover plate during the bending performance test of the reinforced concrete beam, and the connecting cross bar passes through the adjustment column to ensure the stability of the support.

[0007] In a preferred embodiment, a reference column is fixedly connected to the upper surface of the base plate, and an I-shaped steel is fixedly connected to the upper surface of the reference column.

[0008] By adopting the above technical solution, the traditional method of testing the bending performance of the beam is to use the base plate, reference column, and I-shaped steel as the main support points, and the beam to be tested is placed horizontally with both ends placed behind the I-shaped steel.

[0009] In a preferred embodiment, a high-frequency vibrator is fixedly connected to the upper surface of the adjustment column, and a reinforcement block is movably connected to the upper surface of the I-shaped steel.

[0010] By adopting the above technical solution, the high-frequency vibration machine provides a simulated scene during an earthquake through high-frequency vibration, completes the bending performance test of the beam during earthquake resistance, and the buffering of the buffer plate reduces the impact on other positions. When the connecting cross bar passes through the adjustment column to facilitate the connection height impact test on both sides, the connecting cross bar is clamped and the side support column is supported by the connecting cross bar to facilitate the support on both sides.

[0011] In a preferred embodiment, the upper surface of the base plate is fixedly connected to a motor, the outer surface of the motor output end is meshingly connected to a rack, and the base plate is fixedly connected to a limiting housing corresponding to the outer surface of the motor.

[0012] By adopting the above technical solution, by turning on the motor, the rack is displaced synchronously, driving the force-bearing adjustment part to fold the outermost side of the bottom plate of the outer frame. After reaching 90 degrees, the force-bearing adjustment part drives the outer frame to displace inwardly of the bottom plate.

[0013] In a preferred embodiment, a force-bearing adjustment member is disposed on the outer surface of one end of the rack away from the motor, and an outer frame is movably connected to the outer surface of the force-bearing adjustment member.

[0014] By adopting the above technical solution, the force-bearing adjustment member is driven to fold the outermost side of the bottom plate of the outer frame. After reaching 90 degrees, the force-bearing adjustment member drives the outer frame to move toward the inner side of the bottom plate.

[0015] In a preferred embodiment, a protective net is fixedly connected to the outer surface of the outer frame, and outer panels are fixedly connected to the outer surfaces of both sides of the bottom plate.

[0016] By adopting the above technical solution, the protective net covers the entire test environment, and the outer plate is placed so that the protective net can be stored underneath when not in use.

[0017] In a preferred embodiment, support rods are fixedly connected to the upper surfaces of the four corners of the bottom plate, and support wheels are arranged on the upper surfaces of the support rods.

[0018] By adopting the above technical solution, the support wheels support the protection net at the edge of the bottom plate to ensure stability, and the support rods provide support for the support wheels.

[0019] In a preferred embodiment, the upper surfaces on both sides of the bottom plate are movably connected with the measuring bodies, and the outer surfaces on both sides of the bottom plate are welded with upper supporting frames.

[0020] By adopting the above technical solution, the measuring body completes the measurement of the corresponding bending performance test parameters, and the upper support frame provides support for the upper installation.

[0021] In a preferred embodiment, a hydraulic press is welded on the inner surface of the upper support frame, and an LED lamp is fixedly connected to the inner surface of the hydraulic press.

[0022] By adopting the above technical solution, the extension and retraction of the hydraulic press completes the downward pressure test of the bending performance of the crossbeam, and the LED lamp provides good light.

[0023] In a preferred embodiment, a support beam is welded to the inner surface of the upper support frame, and a sprayer is fixedly connected to the upper surface of the support beam.

[0024] By adopting the above technical solution, the supporting beam ensures the stability of the supporting performance of the upper supporting frame, and the water spraying of the sprayer provides an environment with different humidity to avoid the error caused by humidity to the test. Similarly, the sprayer 26 is placed with relevant chemical agents to facilitate the test in a corrosion-resistant environment. At the same time, after the measurement is completed, the water spraying can better absorb and clean the construction waste dust to avoid external influence.

[0025] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0026] 1. A support platform is used as the foundation in the middle of the bottom plate, and a buffer plate is filled to buffer the support platform. The adjustment column is lifted by a crane and moved in the groove of the support platform to complete the placement. The two ends are connected by plugging side support columns to prevent the reinforced concrete beam to be measured from shifting to both sides. The upper cover plate is also used to fix the beam to facilitate the testing of beams of different lengths. The function of the adjustment column, the side support column, and the upper cover plate is to fix the adjustment column, the side support column, and the upper cover plate during the bending performance test of the reinforced concrete beam. The connection on both sides is facilitated by connecting the cross bar 7 through the adjustment column 4 to ensure the stability of the support;

[0027] Second, reinforced concrete beams have high strength. The high-frequency vibration machine provides a simulated scene during an earthquake through high-frequency vibration to complete the bending performance test of the beam during earthquake resistance. The sprayer sprays water to provide an environment with different humidity levels to avoid errors caused by humidity in the test, thereby providing different environmental simulation scenes to ensure the accuracy of the bending performance test.

[0028] 3. By turning on the motor, the rack moves synchronously, driving the force-bearing adjustment part to fold the outermost side of the bottom plate of the outer frame. After reaching 90 degrees, the force-bearing adjustment part drives the outer frame to move inwardly to the bottom plate, thereby driving the protective net to cover the entire test environment. The support wheels support the protective net at the edge of the bottom plate, and the outer plate is placed to facilitate the storage of the protective net, thereby reducing the impact of the test environment on the outside world. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a front view schematic diagram of the overall appearance of the device of the present invention;

[0030] Figure 2 It is a top view of the overall appearance of the device in the present invention;

[0031] Figure 3 It is a schematic diagram of the upper structure of the device in the present invention;

[0032] Figure 4 It is a schematic diagram of the lower structure of the device in the present invention;

[0033] Figure 5 A schematic diagram of the support structure for adjusting the device in the present invention;

[0034] Figure 6 It is a schematic diagram of the structure of the external protection network of the equipment in the present invention.

[0035] Markings in the figure: 1. Base plate; 2. Support platform; 3. Buffer plate; 4. Adjustment column; 5. Side support column; 6. Upper cover plate; 7. Connecting cross bar; 8. Reference column; 9. I-shaped steel; 10. High-frequency vibrator; 11. Reinforcement block; 12. Motor; 13. Rack; 14. Limiting shell; 15. Force adjustment part; 16. Outer frame; 17. Protective net; 18. Place outer plate; 19. Support rod; 20. Support wheel; 21. Measuring body; 22. Upper support frame; 23. Hydraulic press; 24. LED light; 25. Support beam; 26. Sprayer. DETAILED DESCRIPTION

[0036] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in combination with the embodiments of the present invention. Obviously, the described embodiments 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 creative work are within the scope of protection of the present invention.

[0037] Example:

[0038] Reference Figure 1-6A reinforced concrete beam bending performance testing device includes a base plate 1, a support platform 2 is welded on the upper surface of the base plate 1, a buffer plate 3 is arranged on the upper surface of the base plate 1 corresponding to the support platform 2, an adjustment column 4 is movably connected to the inner surface of the support platform 2, a side support column 5 is movably inserted on the outer surface of the upper end of the adjustment column 4, an upper cover plate 6 is movably inserted on the upper surface of the side support column 5, and a connecting cross bar 7 is movably inserted on the outer surface of the upper end of the adjustment column 4.

[0039] A support platform 2 is taken as the foundation in the middle of the base plate 1, and the filled buffer plate 3 buffers the support platform 2. The adjustment column 4 is lifted by a crane and moved in the groove of the support platform 2 to complete the placement. The two ends are connected by plugging in side support columns 5 to prevent the reinforced concrete beam to be measured from shifting to both sides. The upper cover plate 6 is also used to complete the fixation of the beam to facilitate the testing of beams of different lengths. The other function of the adjustment column 4, the side support column 5, and the upper cover plate 6 is to adjust the column 4, the side support column 5, and the upper cover plate 6 when testing the bending performance of the reinforced concrete beam. The connection on both sides is facilitated by connecting the cross bar 7 that penetrates the adjustment column 4 to ensure the stability of the support.

[0040] Reference Figure 1-6 A reference column 8 is fixedly connected to the upper surface of the base plate 1 , and an I-shaped steel 9 is fixedly connected to the upper surface of the reference column 8 .

[0041] The traditional method for testing the bending performance of a beam is to use the base plate 1, the reference column 8, and the I-shaped steel 9 as the main support points, and to place the beam to be tested horizontally with both ends placed behind the I-shaped steel 9.

[0042] Reference Figure 1-6 A high-frequency vibrator 10 is fixedly connected to the upper surface of the adjustment column 4, and a reinforcement block 11 is movably connected to the upper surface of the I-shaped steel 9.

[0043] The high-frequency vibrator 10 provides a simulated earthquake scene through high-frequency vibration, completes the bending performance test of the beam during earthquake resistance, and the buffering of the buffer plate 3 reduces the impact on other positions. When the connecting cross bar 7 passes through the adjustment column 4 to facilitate the connection height impact test on both sides, the connecting cross bar 7 is clamped, and the side support column 5 is supported by the connecting cross bar 7 to facilitate the support on both sides.

[0044] Reference Figure 1-6 A motor 12 is fixedly connected to the upper surface of the bottom plate 1 , a rack 13 is meshedly connected to the outer surface of the output end of the motor 12 , and a limiting housing 14 is fixedly connected to the outer surface of the bottom plate 1 corresponding to the motor 12 .

[0045] By turning on the motor 12 , the rack 13 is displaced synchronously, driving the force-bearing adjustment member 15 to fold the outer frame 16 with the outermost side of the bottom plate 1 . After reaching 90 degrees, the force-bearing adjustment member 15 drives the outer frame 16 to displace inwardly of the bottom plate 1 .

[0046] Reference Figure 1-6A force-bearing adjustment member 15 is disposed on the outer surface of one end of the rack 13 away from the motor 12 , and an outer frame 16 is movably connected to the outer surface of the force-bearing adjustment member 15 .

[0047] The force-bearing adjustment member 15 is driven to fold the outer frame 16 with the outermost side of the bottom plate 1 . After reaching 90 degrees, the force-bearing adjustment member 15 drives the outer frame 16 to move toward the inner side of the bottom plate 1 .

[0048] Reference Figure 1-6 A protective net 17 is fixedly connected to the outer surface of the outer frame 16, and outer panels 18 are fixedly connected to the outer surfaces of both sides of the bottom plate 1.

[0049] The protection net 17 covers the entire test environment, and the outer plate 18 is placed to facilitate storage of the protection net 17 underneath when it is not in use.

[0050] Reference Figure 1-6 The upper surfaces of the four corners of the bottom plate 1 are fixedly connected with support rods 19 , and the upper surfaces of the support rods 19 are provided with support wheels 20 .

[0051] The support wheels 20 support the protection net 17 at the edge of the bottom plate 1 to ensure stability, and the support rods 19 provide support for the support wheels 20 .

[0052] Reference Figure 1-6 A measuring body 21 is movably connected to the upper surfaces of both sides of the bottom plate 1, and an upper supporting frame 22 is welded to the outer surfaces of both sides of the bottom plate 1.

[0053] The measuring body 21 completes the measurement of the corresponding bending performance test parameters, and the upper support frame 22 provides support for the upper installation.

[0054] Reference Figure 1-6 A hydraulic press 23 is welded on the inner surface of the upper support frame 22 , and an LED lamp 24 is fixedly connected to the inner surface of the hydraulic press 23 .

[0055] The extension and retraction of the hydraulic press 23 completes the downward pressure test of the bending performance of the cross beam, and the LED lamp 24 provides good light.

[0056] Reference Figure 1-6 A support beam 25 is welded to the inner surface of the upper support frame 22 , and a sprayer 26 is fixedly connected to the upper surface of the support beam 25 .

[0057] The support beam 25 ensures the stability of the support performance of the upper support frame 22. The water spraying of the sprayer 26 provides an environment with different humidity to avoid the error caused by humidity in the test. Similarly, the sprayer 26 is placed with relevant chemical agents to facilitate the test in a corrosion-resistant environment. At the same time, after the measurement is completed, the water spraying can better absorb and clean the construction waste dust to avoid external influence.

[0058] The implementation principle of the embodiment of the reinforced concrete beam bending performance testing device of the present invention is:

[0059] The traditional method for testing the bending performance of beams is to use the base plate 1, reference column 8, and I-shaped steel 9 as the main support points, place the beam to be tested horizontally, and place both ends on the I-shaped steel 9. The hydraulic press 23 is extended and pressed down to perform extrusion under different pressures, and then the cracks at the corresponding positions are measured by the measuring body 21 to complete the bending performance test of the beam. The optimized method adopted this time is to use the support platform 2 as the foundation in the middle of the base plate 1, and the filled buffer plate 3 is used to buffer the support platform 2. The adjustment column 4 is lifted by a crane and moved in the groove of the support platform 2 to complete the placement. The side support columns 5 are inserted at both ends to prevent the cement concrete beam to be measured from shifting to both sides. The upper cover plate 6 is also used to complete the fixation of the beam to facilitate the testing of beams of different lengths. The other function of the adjustment column 4, the side support column 5, and the upper cover plate 6 is to simulate the connection force of the corresponding beam position of the building on both sides by fixing the adjustment column 4, the side support column 5, and the upper cover plate 6 when testing the bending performance of the reinforced concrete beam. , to ensure that the bending performance test of reinforced concrete beams conforms to the actual stress conditions. The high-frequency vibrator 10 provides a simulated scene during an earthquake through high-frequency vibration to complete the bending performance test of the beam during earthquake resistance. The buffering of the buffer plate 3 reduces the impact on other positions. The water spraying of the sprayer 26 provides an environment with different humidity to avoid the error caused by humidity to the test. At the same time, after the measurement is completed, the water spraying can better absorb and clean the dust of construction waste to avoid external influence. The LED lamp 24 ensures good light and provides a better environment when the measuring body 21 measures the depth and crack length. By turning on the motor 12, the rack 13 is displaced synchronously, driving the force adjustment part 15 to fold the outer frame 16 with the outermost side of the bottom plate 1. After reaching 90 degrees, the force adjustment part 15 drives the outer frame 16 to move to the inner side of the bottom plate 1, and then drives the protective net 17 to cover the entire test environment. The support wheel 20 supports the protective net 17 at the edge of the bottom plate 1 to ensure stability and reduce the impact of the test.

[0060] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A reinforced concrete beam bending performance testing device, comprising a bottom plate (1), characterized in that: A support platform (2) is welded to the upper surface of the base plate (1); a buffer plate (3) is arranged on the upper surface of the base plate (1) corresponding to the support platform (2); an adjustment column (4) is movably connected to the inner surface of the support platform (2); a side support column (5) is movably inserted into the outer surface of the upper end of the adjustment column (4); an upper cover plate (6) is movably inserted into the upper surface of the side support column (5); and a connecting cross bar (7) is movably inserted into the outer surface of the upper end of the adjustment column (4).

2. A reinforced concrete beam bending performance testing device as claimed in claim 1, characterized in that: A reference column (8) is fixedly connected to the upper surface of the base plate (1), and an I-shaped steel (9) is fixedly connected to the upper surface of the reference column (8).

3. A reinforced concrete beam bending performance testing device as claimed in claim 1, characterized in that: A high-frequency vibrator (10) is fixedly connected to the upper surface of the adjustment column (4), and a reinforcement block (11) is movably connected to the upper surface of the I-shaped steel (9).

4. A reinforced concrete beam bending performance testing device as claimed in claim 1, characterized in that: The upper surface of the base plate (1) is fixedly connected to a motor (12), the outer surface of the output end of the motor (12) is meshingly connected to a rack (13), and the base plate (1) is fixedly connected to a limiting housing (14) corresponding to the outer surface of the motor (12).

5. A reinforced concrete beam bending performance testing device as claimed in claim 4, characterized in that: A force-bearing adjustment member (15) is provided on the outer surface of one end of the rack (13) away from the motor (12), and an outer frame (16) is movably connected to the outer surface of the force-bearing adjustment member (15).

6. A reinforced concrete beam bending performance testing device as claimed in claim 5, characterized in that: The outer surface of the outer frame (16) is fixedly connected with a protective net (17), and the outer surfaces of both sides of the bottom plate (1) are fixedly connected with placement outer plates (18).

7. A reinforced concrete beam bending performance testing device as claimed in claim 1, characterized in that: The upper surfaces of the four corners of the bottom plate (1) are fixedly connected to support rods (19), and the upper surfaces of the support rods (19) are provided with support wheels (20).

8. A reinforced concrete beam bending performance testing device as claimed in claim 1, characterized in that: The upper surfaces on both sides of the bottom plate (1) are movably connected with a measuring body (21), and the outer surfaces on both sides of the bottom plate (1) are welded with an upper support frame (22).

9. A reinforced concrete beam bending performance testing device as claimed in claim 8, characterized in that: A hydraulic press (23) is welded to the inner surface of the upper support frame (22), and an LED lamp (24) is fixedly connected to the inner surface of the hydraulic press (23).

10. A reinforced concrete beam bending performance testing device as claimed in claim 8, characterized in that: A support beam (25) is welded to the inner surface of the upper support frame (22), and a sprayer (26) is fixedly connected to the upper surface of the support beam (25).

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