Concrete beam heightening device

Abstract

The utility model relates to the field of building construction, in particular to a concrete beam heightening device which comprises a reinforcing device, a concrete beam and a forming die, section-enlarged concrete is arranged in the forming die, and the lower end of the concrete beam is inserted into the forming die and connected with the section-enlarged concrete. The reinforcing device comprises a first supporting piece, a second supporting piece, a first connecting piece, a second connecting piece and an angle steel cross beam, the upper end of the first supporting piece and the upper end of the second supporting piece are fixedly connected with the two sides of the concrete beam correspondingly, and the lower end of the first supporting piece is fixedly connected with the upper end of the first connecting piece; the lower end of the second supporting piece is fixedly connected with the upper end of the second connecting piece, the lower end of the first connecting piece and the lower end of the second connecting piece are in threaded connection with the two ends of the angle steel beam respectively, and a wood brace is arranged between the angle steel beam and the forming die. The cross-section-enlarged concrete is additionally arranged at the lower end of the concrete beam through the forming die, the overall height of the beam is increased through reinforcing of the reinforcing device, and the bearing capacity is improved.

Description

Technical Field

[0001] This utility model relates to the field of building construction, specifically to a device for raising concrete beams. Background Technology

[0002] Reinforced concrete beams, as a commonly used structural component, have been widely applied in various aspects of building structures. However, when the use of a floor changes, equipment is added to increase its weight, or even when the bottom of a soil beam is severely damaged due to a fire, the original soil beam may be unable to withstand the increased load. Since the bending capacity of a beam is proportional to the square of its cross-sectional height, increasing its height can restore its bearing capacity and improve the bending capacity of the soil beam.

[0003] Prior art application number 201720409297.6 discloses a steel plate-concrete composite structure for strengthening the fatigue resistance of reinforced concrete beams, including a concrete beam to be strengthened, reinforcing bars, a steel mesh, and a steel plate. Holes are drilled at the bottom of the concrete beam to be strengthened in two rows arranged side-by-side. Reinforcing bars are inserted into the holes, with their long sides placed inside the holes and their short sides facing each other. The longitudinal reinforcing bars of the steel mesh are correspondingly arranged and fixed to the reinforcing bars. A steel plate is placed at the bottom of the concrete beam to be strengthened as a bottom formwork, and side formwork is set on both sides of the concrete beam to be strengthened. Concrete is then poured to form the strengthened concrete beam.

[0004] The above-mentioned structure requires drilling holes at the bottom of the earth beam, which is inconvenient to operate. If the bottom of the earth beam is severely damaged due to a fire, drilling holes at the bottom will further damage the earth beam, reduce its load-bearing capacity, and may even affect the stability and safety of the floor above. Therefore, it has a limited scope of application. Summary of the Invention

[0005] In order to overcome the shortcomings and deficiencies of the existing technology, the purpose of this utility model is to provide a concrete beam heightening device with simple structure and strong practicality.

[0006] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0007] A concrete beam heightening device includes a reinforcement device, a concrete beam, and a forming mold. The forming mold has a U-shaped cross-section and contains enlarged cross-section concrete. The lower end of the concrete beam is inserted into the forming mold and connected to the enlarged cross-section concrete. The reinforcement device includes a first support member, a second support member, a first connector, a second connector, and an angle steel beam. The angle steel beam is located below the forming mold. The upper ends of the first and second support members are fixedly connected to the two sides of the concrete beam, respectively. The lower end of the first support member is fixedly connected to the upper end of the first connector, and the lower end of the second support member is fixedly connected to the upper end of the second connector. The lower ends of the first and second connectors move downwards along the side of the forming mold until they are threadedly connected to both ends of the angle steel beam. A wooden beam is provided between the angle steel beam and the forming mold.

[0008] Furthermore, the forming mold includes a bottom template, a first side template, and a second side template. The two ends of the bottom template are respectively connected to the lower ends of the first side template and the lower ends of the second side template. The bottom template is located below the concrete beam. The inner side of the upper end of the first side template is connected to the outer side of the concrete beam. The inner side of the upper end of the second side template is connected to the other outer side of the concrete beam. The lower end of the first connector moves downward along the outer side of the first template until it is threadedly connected to the end of the angle steel beam. The lower end of the second connector moves downward along the outer side of the second template until it is threadedly connected to the end of the angle steel beam. The timber is located at the lower end of the bottom template.

[0009] Furthermore, the reinforcement device also includes a first fastener and a second fastener, one end of the first fastener passing through the first support member until it is connected to the concrete beam, and one end of the second fastener passing through the second support member until it is connected to the concrete beam.

[0010] Furthermore, the reinforcement device also includes a third fastener. A first pad is provided between the upper part of the first support member and the concrete beam. The inner side of the lower part of the first support member is attached to the first side template. One end of the third fastener passes through the first support member and the first pad in sequence until it is connected to the concrete beam. The first fastener is located between the first pad and the first side template. The upper end face of the first side template abuts against the first fastener.

[0011] Furthermore, the reinforcement device also includes a fourth fastener. A second pad is provided between the upper part of the second support member and the concrete beam. The inner side of the lower part of the second support member is attached to the second side template. The thickness of the second pad is the same as the thickness of the second side template. One end of the fourth fastener passes through the second support member and the second pad in sequence until it is connected to the concrete beam. The second fastener is located between the second pad and the second side template. The upper end face of the second side template abuts against the second fastener.

[0012] Furthermore, the lower end of the first support member is fixedly connected to the upper end of the first connector by a weld, and the lower end of the second support member is fixedly connected to the upper end of the second connector by a weld.

[0013] Furthermore, there are multiple reinforcement devices, which are spaced apart along the length of the soil beam.

[0014] Furthermore, both the first and second support members are angle steel.

[0015] Furthermore, both the first and second connecting members are screws.

[0016] Furthermore, the first fastener, the second fastener, the third fastener, and the fourth fastener are all expansion bolts.

[0017] The beneficial effects of this utility model are as follows: The concrete beam heightening device of this utility model has a simple structure. An enlarged cross-section concrete is added to the lower end of the concrete beam through a molding mold, and the enlarged cross-section concrete is reinforced by a strengthening device. This increases the overall height of the original concrete beam, enlarges the cross-sectional dimensions, enhances rigidity, and further improves load-bearing capacity. Compared with existing technologies, this utility model does not require drilling holes at the bottom of the original concrete beam, avoiding damage to the beam. It is applicable not only to beam heightening required for changes in floor use or for increasing equipment weight, but also to beam heightening required due to a reduction in the effective cross-section caused by a fire, making it widely applicable. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of a concrete beam heightening device.

[0019] Figure 2 A partial sectional view of the concrete beam heightening device.

[0020] The reference numerals in the figures include:

[0021] 1. Concrete beam; 2. Enlarged cross-section concrete; 3. First support member; 4. Second support member; 5. First connector; 6. Second connector; 7. Angle steel beam; 8. Timber; 9. Bottom formwork; 10. First side formwork; 11. Second side formwork; 12. First fastener; 13. Second fastener; 14. Third fastener; 15. Fourth fastener; 16. First pad; 17. Second pad. Detailed Implementation

[0022] To facilitate understanding by those skilled in the art, the present invention will be further described below with reference to embodiments and accompanying drawings. The content mentioned in the embodiments is not intended to limit the present invention.

[0023] like Figure 1-2 As shown, a concrete beam heightening device includes a reinforcement device, a concrete beam 1, and a forming mold. The forming mold has a U-shaped cross-section and contains an enlarged section concrete 2. The lower end of the concrete beam 1 is inserted into the forming mold and connected to the enlarged section concrete 2. The reinforcement device includes a first support 3, a second support 4, a first connector 5, a second connector 6, and an angle steel beam 7. The angle steel beam 7 is located below the forming mold. The upper ends of the first support 3 and the second support 4 are fixedly connected to the two sides of the concrete beam 1, respectively. The lower end of the first support 3 is fixedly connected to the upper end of the first connector 5, and the lower end of the second support 4 is fixedly connected to the upper end of the second connector 6. The lower ends of the first connector 5 and the second connector 6 move downwards along the side of the forming mold until they are threadedly connected to both ends of the angle steel beam 7. That is, the inner sides of the first connector 5 and the second connector 6 are both in contact with the side of the forming mold. A wooden beam 8 is provided between the angle steel beam 7 and the forming mold.

[0024] This utility model discloses a concrete beam heightening device with a simple structure. An enlarged cross-section concrete 2 is added to the lower end of the concrete beam 1 via a molding mold, and the enlarged cross-section concrete 2 is reinforced by a strengthening device. This increases the overall height of the original concrete beam 1, enlarges the cross-sectional dimensions, enhances rigidity, and further improves load-bearing capacity. Furthermore, the strengthening device is easy to install. The upper ends of the first support member 3 and the second support member 4 are fixedly connected to both sides of the concrete beam 1, respectively. The lower ends of the first support member 3 and the second support member 4 are connected to the angle steel beam 7 via the first connector 5 and the second connector 6, respectively. The molding mold is placed inside the strengthening device, providing excellent support for the molding mold. A wooden beam 8 is provided between the angle steel beam 7 and the molding mold. The wooden beam 8 disperses the pressure at the bottom of the molding mold, preventing localized damage to the concrete beam 1 caused by the pressure of the angle steel beam 7. Compared with the prior art, this utility model does not drill holes at the bottom of the original concrete beam 1, thus avoiding damage to the soil beam. It is applicable not only to changes in the use of the floor or the beam height required for increasing the weight of equipment, but also to the beam height required due to the reduction of the effective cross-section of the beam caused by a fire, and has a wide range of applications.

[0025] In this embodiment, there are two wooden beams 8, which are spaced apart along the length of the angle steel beam 7. There are gaps between the two wooden beams 8 and the first connecting member 5 and the second connecting member 6, respectively, to facilitate the movement of the wooden beams 8.

[0026] Furthermore, the forming mold includes a bottom template 9, a first side template 10, and a second side template 11. The bottom template 9, the first side template 10, and the second side template 11 form a U-shaped channel. The enlarged cross-section concrete 2 is placed inside the U-shaped channel. The two ends of the bottom template 9 are respectively connected to the lower ends of the first side template 10 and the second side template 11. The bottom template 9 is located below the concrete beam 1. The inner side of the upper end of the first side template 10 is connected to the outer side of the concrete beam 1. The inner side of the upper end of the second side template 11 is connected to the other outer side of the concrete beam 1. The lower end of the first connecting piece 5 moves downward along the outer side of the first template until it is threadedly connected to the end of the angle steel beam 7. The lower end of the second connecting piece 6 moves downward along the outer side of the second template until it is threadedly connected to the end of the angle steel beam 7. The timber 8 is placed at the lower end of the bottom template 9. The forming mold has a simple structure and is easy to install.

[0027] Furthermore, the reinforcement device also includes a first fastener 12 and a second fastener 13. One end of the first fastener 12 passes through the first support member 3 and connects to the concrete beam 1, and one end of the second fastener 13 passes through the second support member 4 and connects to the concrete beam 1. The first fastener 12 ensures a tight connection between the first support member 3 and the concrete beam 1, and the second fastener 13 ensures a tight connection between the second support member 4 and the concrete beam 1.

[0028] Furthermore, the reinforcement device also includes a third fastener 14. A first pad 16 is provided between the upper part of the first support member 3 and the concrete beam 1. The inner side of the lower part of the first support member 3 is attached to the first side template 10. The thickness of the first pad 16 is the same as the thickness of the first side template 10. One end of the third fastener 14 passes through the first support member 3 and the first pad 16 in sequence until it is connected to the concrete beam 1. A gap is left between the lower end of the first pad 16 and the upper end of the first side template 10. The first fastener 12 is located between the first pad 16 and the first side template 10, and the upper end face of the first side template 10 abuts against the first fastener 12. The third fastener 14 enhances the tightness of the connection between the first support member 3 and the concrete beam 1. The first pad 16 facilitates the inner side of the lower part of the first support member 3 to be attached to the first side template 10, enhancing the reinforcement effect while ensuring that the first support member 3 is in a vertical state, thus improving the stability of the reinforcement device. Furthermore, the upper end face of the first side template 10 abuts against the first fastener 12, that is, the first support 3, the first fastener 12 and the concrete beam 1 form a first groove, and the first side template 10 is inserted into the first groove, which enhances the reinforcement effect of the reinforcement device on the forming mold.

[0029] Furthermore, the reinforcement device also includes a fourth fastener 15. A second pad 17 is provided between the upper part of the second support member 4 and the concrete beam 1. The inner side of the lower part of the second support member 4 is attached to the second side template 11. The thickness of the second pad 17 is the same as the thickness of the second side template 11. One end of the fourth fastener 15 passes through the second support member 4 and the second pad 17 in sequence until it is connected to the concrete beam 1. A gap is left between the lower end of the second pad 17 and the upper end of the second side template 11. The second fastener 13 is located between the second pad 17 and the second side template 11, and the upper end face of the second side template 11 abuts against the second fastener 13. The fourth fastener 15 enhances the tightness of the connection between the second support member 4 and the concrete beam 1. The second pad 17 facilitates the inner side of the lower part of the second support member 4 to be attached to the second side template 11, enhancing the reinforcement effect while ensuring that the second support member 4 is in a vertical state, thus improving the stability of the reinforcement device. Furthermore, the upper end face of the second side template 11 abuts against the second fastener 13, that is, the second support 4, the second fastener 13 and the concrete beam 1 form a second groove, and the second side template 11 is inserted into the second groove, which enhances the reinforcement effect of the reinforcement device on the forming mold.

[0030] Furthermore, the lower end of the first support member 3 is fixedly connected to the upper end of the first connector 5 by a weld, and the lower end of the second support member 4 is fixedly connected to the upper end of the second connector 6 by a weld, making the connection stable.

[0031] Furthermore, the number of the reinforcement devices is multiple, and the multiple reinforcement devices are spaced apart along the length of the soil beam to ensure the reinforcement effect of the reinforcement devices on the enlarged cross-section concrete 2, and further improve the bearing capacity of the soil beam.

[0032] Furthermore, both the first support member 3 and the second support member 4 are angle steel, which improves the reinforcement effect and stability of the reinforcement device.

[0033] Furthermore, both the first connecting member 5 and the second connecting member 6 are screws. The first connecting member 5 and the second connecting member 6 are respectively threaded to both ends of the angle steel beam 7 through adjusting nuts, which facilitates the adjustment of the distance between the angle steel beam 7 and the forming mold and has a wide range of applications.

[0034] Furthermore, the first fastener 12, the second fastener 13, the third fastener 14, and the fourth fastener 15 are all expansion bolts, ensuring a secure connection.

[0035] In this embodiment, the enlarged cross-section concrete 2 is concrete. Specifically, the construction process of the concrete beam heightening device includes the following steps:

[0036] 1. Drill holes according to the positions of the first fastener 12, the second fastener 13, the third fastener 14 and the fourth fastener 15. Place the first pad 16 and the second pad 17 on both sides of the concrete beam 1 respectively. Then place the first support 3 and the second support 4 on the outside of the first pad 16 and the second pad 17 respectively. Tighten the first fastener 12, the second fastener 13, the third fastener 14 and the fourth fastener 15 in sequence.

[0037] 2. Take the first connector 5 and the second connector 6, place the upper end of the first connector 5 at the lower end of the first support 3 and weld it, and place the upper end of the second connector 6 at the lower end of the second support 4 and weld it.

[0038] 3. Install the angle steel beam 7 at the lower end of the first connector 5 and the second connector 6, and adjust the level of the adjusting nut;

[0039] 4. Take the first side template 10 and / or the second side template 11, and open the inlet on the first side template 10 and / or the second side template 11;

[0040] 5. Place wooden beams 8 on the angle steel beam 7;

[0041] 6. Remove the bottom template 9, the first side template 10, and the second side template 11. Lay the bottom template 9 on the upper end of the timber 8, and then install the first side template 10 and the second side template 11 on both sides of the concrete beam 1 respectively. The molding mold is now installed.

[0042] 7. Take concrete. The concrete enters the molding mold through the inlet and fills it. An enlarged section concrete 2 is added to the lower end of the concrete beam 1.

[0043] The above description is only a preferred embodiment of this utility model. For those skilled in the art, there will be changes in the specific implementation method and application scope based on the idea of ​​this utility model. The content of this specification should not be construed as a limitation of this utility model.

Claims

1. A device for raising the height of a concrete beam, characterized in that: The device includes a reinforcement device, a concrete beam (1), and a molding mold. The molding mold has a U-shaped cross-section and contains an enlarged cross-section concrete (2). The lower end of the concrete beam (1) is inserted into the molding mold and connected to the enlarged cross-section concrete (2). The reinforcement device includes a first support (3), a second support (4), a first connector (5), a second connector (6), and an angle steel beam (7). The angle steel beam (7) is located below the molding mold. The upper ends of the first support (3) and the second support (4) are fixedly connected to the two sides of the concrete beam (1), respectively. The lower end of the first support (3) is fixedly connected to the upper end of the first connector (5), and the lower end of the second support (4) is fixedly connected to the upper end of the second connector (6). The lower ends of the first connector (5) and the second connector (6) move downward along the side of the molding mold until they are threadedly connected to both ends of the angle steel beam (7). A wooden beam (8) is provided between the angle steel beam (7) and the molding mold.

2. The concrete beam heightening device according to claim 1, characterized in that: The forming mold includes a bottom template (9), a first side template (10), and a second side template (11). The two ends of the bottom template (9) are respectively connected to the lower ends of the first side template (10) and the lower ends of the second side template (11). The bottom template (9) is located below the concrete beam (1). The inner side of the upper end of the first side template (10) is connected to the outer side of the concrete beam (1). The inner side of the upper end of the second side template (11) is connected to the other outer side of the concrete beam (1). The lower end of the first connector (5) moves downward along the outer side of the first template until it is threadedly connected to the end of the angle steel beam (7). The lower end of the second connector (6) moves downward along the outer side of the second template until it is threadedly connected to the end of the angle steel beam (7). The timber (8) is located at the lower end of the bottom template (9).

3. The concrete beam heightening device according to claim 2, characterized in that: The reinforcement device also includes a first fastener (12) and a second fastener (13), one end of the first fastener (12) passes through the first support member (3) until it is connected to the concrete beam (1), and one end of the second fastener (13) passes through the second support member (4) until it is connected to the concrete beam (1).

4. The concrete beam heightening device according to claim 3, characterized in that: The reinforcement device also includes a third fastener (14). A first pad (16) is provided between the upper part of the first support member (3) and the concrete beam (1). The inner side of the lower part of the first support member (3) is attached to the first side template (10). One end of the third fastener (14) passes through the first support member (3) and the first pad (16) in sequence until it is connected to the concrete beam (1). The first fastener (12) is located between the first pad (16) and the first side template (10). The upper end face of the first side template (10) abuts against the first fastener (12).

5. The concrete beam heightening device according to claim 4, characterized in that: The reinforcement device also includes a fourth fastener (15). A second pad (17) is provided between the upper part of the second support member (4) and the concrete beam (1). The inner side of the lower part of the second support member (4) is attached to the second side template (11). The thickness of the second pad (17) is the same as the thickness of the second side template (11). One end of the fourth fastener (15) passes through the second support member (4) and the second pad (17) in sequence until it is connected to the concrete beam (1). The second fastener (13) is located between the second pad (17) and the second side template (11). The upper end face of the second side template (11) abuts against the second fastener (13).

6. The concrete beam heightening device according to claim 1, characterized in that: The lower end of the first support member (3) is fixedly connected to the upper end of the first connector (5) by a weld, and the lower end of the second support member (4) is fixedly connected to the upper end of the second connector (6) by a weld.

7. The concrete beam heightening device according to claim 1, characterized in that: The number of reinforcement devices is multiple, and the multiple reinforcement devices are spaced apart along the length of the soil beam.

8. The concrete beam heightening device according to claim 1, characterized in that: Both the first support member (3) and the second support member (4) are angle steel.

9. The concrete beam heightening device according to claim 1, characterized in that: Both the first connector (5) and the second connector (6) are screws.

10. The concrete beam heightening device according to claim 5, characterized in that: The first fastener (12), the second fastener (13), the third fastener (14) and the fourth fastener (15) are all expansion bolts.

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