Anti-overturning curve continuous steel box girder

Abstract

The invention relates to the technical field of steel box girders, and discloses an anti-overturning curve continuous steel box girder which comprises an upper force holding seat, one side of the upper force holding seat is fixedly connected with a force transmission column, and one side of the force transmission column is fixedly connected with a lower force holding seat. The upper force holding seat is arranged, the rectangular cuboid force transmission column with the same beam height is additionally arranged in the beam body on the basis of the upper force holding seat, and the top plate and the bottom plate of the steel box beam are reliably connected through the force transmission column in a full welding mode, so that the anti-overturning device and the box beam are integrally connected, and the phenomenon that the bottom plate of the beam body is cracked by the anti-overturning structure during overturning is avoided; the anti-overturning force can be effectively improved, displacement is reserved in displacement holes of the first tensile plate and the second tensile plate, the anti-overturning force can adapt to movement generated by contraction and expansion of a beam body and displacement of a bridge, then U-shaped anchor bars are additionally arranged on a lower force holding base foundation and stretch into a pier column, and the U-shaped anchor bars and the anti-overturning lower force holding base are suitable for being connected through factory-like machining and full welding. And meanwhile, during installation, reliable connection with vertical main reinforcements of the pier column is carried out.

Description

Technical Field

[0001] This invention relates to the field of steel box girder technology, specifically to an anti-overturning curved continuous steel box girder. Background Technology

[0002] Steel box girders possess excellent bending resistance, reliable torsional resistance, and a large span capacity, making them widely used in urban bridge design where land is limited. However, their relatively light weight is a disadvantage in terms of lateral overturning resistance. Since 2007, following incidents of lateral overturning and collapse of box girder ramp bridges in Baotou (Inner Mongolia), Tianjin, and Shangyu (Zhejiang), overturning stability design has received increasing attention. Existing steel box girder anti-overturning structures suffer from insufficient stability in the connections between tensile plates, preventing the formation of continuous steel box girders.

[0003] Application number 202021843509.X discloses an anti-overturning structure suitable for small-radius curved steel box girders, including a bridge pier and a small-radius curved steel box girder; two sets of double supports are fixed on both sides of the top surface of the bridge pier; each set of double supports is arranged on both sides of the centerline of the bottom surface of the small-radius curved steel box girder; two rows of anti-overturning tie rods are pre-embedded and cast on both sides of the supports of the bridge pier; the top of the anti-overturning tie rod passes through the bottom hole seat and pad of the small-radius curved steel box girder; the pad is pressed tightly against the top surface of the bottom hole seat; and a clamping nut is screwed onto the top surface of the pad of the anti-overturning tie rod. This utility model's anti-overturning structure for small-radius curved steel box girders is simple in design. It uses double supports to bear the torque, making the torque of the small-radius curved steel box girder more evenly distributed on the curved continuous beam. In addition, it uses anti-overturning tie rods for anti-overturning, and after installation, the anti-overturning tie rods have the effect of resisting pull-out but not compression.

[0004] However, this device has shortcomings. It is suitable for anti-overturning structures of small-radius curved steel box girders. The anti-overturning structure is simple. It uses double supports to bear the torque, so that the torque of the small-radius curved steel box girder is distributed more evenly on the curved continuous beam. In addition, anti-overturning tie rods are used for anti-overturning. After the anti-overturning tie rods are installed, they have the effect of resisting pull but not compression. However, this device has the problem that the connection between the tension plates is not stable enough. When the connection between the tension plates is not stable enough, a continuous steel box girder cannot be formed. Summary of the Invention

[0005] The purpose of this invention is to provide an anti-overturning curved continuous steel box girder to solve the problem that the device proposed in the background art is suitable for anti-overturning structures of small-radius curved steel box girders. The anti-overturning structure is simple, using double supports to bear the torque, so that the torque of the small-radius curved steel box girder is more evenly distributed on the curved continuous beam. In addition, anti-overturning tie rods are used for anti-overturning. After the anti-overturning tie rods are installed, they have the effect of resisting pull but not compression. However, this device has the problem that the connection between the tension plates is not stable enough. When the connection between the tension plates is not stable enough, a continuous steel box girder cannot be formed.

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

[0007] The present invention is an anti-overturning curved continuous steel box girder, including an upper bearing seat, a force transmission column fixedly connected to one side of the upper bearing seat, a lower bearing seat fixedly connected to one side of the force transmission column, and a tension plate fixedly connected to the lower side of the lower bearing seat.

[0008] Furthermore, a displacement hole is provided on the inner side of the tensile plate.

[0009] Furthermore, a second tensile plate is movably connected to one side of the first tensile plate, and a second displacement hole is provided on the inner side of the second tensile plate.

[0010] Furthermore, an anchor post is fixedly connected to the lower side of the lower support seat, and a U-shaped anchor bar is fixedly connected to the lower side of the anchor post.

[0011] Furthermore, a compression column is fixedly connected to the side of the U-shaped anchor bar away from the anchor column, and a pier column is fixedly connected to the side of the compression column away from the U-shaped anchor bar.

[0012] Furthermore, an H-beam connector is fixedly connected to the lower side of the tensile plate.

[0013] Furthermore, a screw is fixedly connected to the inner side of the H-beam connection, and a stud is fixedly connected to the outer side of the screw.

[0014] Furthermore, an H-beam connection is fixedly connected to the lower side of the stud, and a transverse steel connection is fixedly connected to one side of the H-beam connection.

[0015] Furthermore, an H-beam connection third is fixedly connected to the side of the transverse steel connection away from the H-beam connection second.

[0016] Furthermore, an H-beam connection fourth is fixedly connected to one side of the H-beam connection third.

[0017] The present invention has the following beneficial effects:

[0018] (1) This invention sets up an upper support seat, and the foundation of the upper support seat adds a rectangular cuboid force transmission column with the same height as the beam in the beam body. The force transmission column connects the top plate and bottom plate of the steel box girder through full welding to form a reliable connection, so that the anti-overturning device is integrated with the box girder as a whole, avoiding the anti-overturning structure from cracking the bottom plate of the beam body when overturning, which can effectively improve the anti-overturning force. In addition, displacement is reserved in the displacement holes of tension plate one and tension plate two, which can adapt to the movement caused by the contraction and expansion of the beam body and the displacement of the bridge. Then, U-shaped anchor bars are added to the foundation of the lower support seat and extend into the pier column. The U-shaped steel bars and the anti-overturning lower support seat should be connected by full welding in the factory. At the same time, they should be reliably connected with the vertical main reinforcement of the pier column during installation.

[0019] (2) This invention incorporates H-beam connections. Firstly, H-beams possess high strength; compared to I-beams, H-beams have higher strength, requiring less material to achieve the same strength requirements, thus saving costs. Secondly, their regular structure facilitates easy assembly: the regular structure of H-beams allows for greater flexibility in structural construction and improves space utilization. Thirdly, they offer good structural stability: structures constructed with H-beams exhibit high toughness and stability due to their smooth and tight connections, making them suitable for areas with frequent earthquakes. Connecting tension plates one and two with H-beams provides the aforementioned advantages, strengthening the connection between the tension plates and thereby enhancing seismic resistance.

[0020] Of course, any product implementing this invention does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0021] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0023] Figure 2 This is a schematic diagram of the force transmission column of the present invention.

[0024] Figure 3 This is a schematic diagram of the connection of the tensile plate of the present invention;

[0025] Figure 4 This is a schematic diagram of the anchor connection of the present invention;

[0026] Figure 5 This is a schematic diagram of the H-beam connection of the present invention;

[0027] Figure 6This is a schematic diagram of the screw connection of the present invention;

[0028] Figure 7 This is a schematic diagram of the H-beam steel connection of the present invention;

[0029] Figure 8 This is a schematic diagram of the transverse steel connection of the present invention;

[0030] The attached diagram lists the components represented by each number as follows:

[0031] In the diagram: 1. Upper bearing seat; 2. Force transmission column; 3. Lower bearing seat; 4. Tension plate one; 5. Displacement hole one; 6. Tension plate two; 7. Displacement hole two; 8. Anchor column; 9. U-shaped anchor bar; 10. Compression column; 11. Pier column; 12. H-beam connection one; 13. Screw; 14. Stud; 15. H-beam connection two; 16. Transverse steel connection; 17. H-beam connection three; 18. H-beam connection four; Detailed Implementation

[0032] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0033] Please see Figures 1-8 As shown, the present invention is an anti-overturning curved continuous steel box girder, including an upper support seat 1, a force transmission column 2 fixedly connected to one side of the upper support seat 1, a lower support seat 3 fixedly connected to one side of the force transmission column 2, and a tension plate 4 fixedly connected to the lower side of the lower support seat 3.

[0034] The foundation of the upper bearing seat 1 is equipped with a rectangular cuboid force transmission column 2 of the same height as the beam. The force transmission column 2 connects the top plate and bottom plate of the steel box girder by full welding, so that the anti-overturning device is integrated with the box girder as a whole, which avoids the anti-overturning structure from cracking the bottom plate of the beam when overturning occurs, and can effectively improve the overturning resistance.

[0035] By adopting the above technical solution, this solution provides a displacement hole 5 on the inner side of the tensile plate 4.

[0036] The displacement holes in the tensile plate are designed to accommodate displacement, allowing for movement caused by the contraction and expansion of the beam itself and the displacement of the bridge.

[0037] By adopting the above technical solution, this solution provides a tensile plate 6 movably connected to one side of the tensile plate 4, and a displacement hole 7 is provided on the inner side of the tensile plate 6.

[0038] Similarly, the displacement holes in the tensile plate are designed to accommodate the displacement caused by the contraction and expansion of the beam itself and the displacement of the bridge.

[0039] By adopting the above technical solution, this solution involves setting an anchor column 8 fixedly connected to the lower side of the lower support seat 3, and a U-shaped anchor bar 9 fixedly connected to the lower side of the anchor column 8.

[0040] By adopting the above technical solution, this solution involves setting a U-shaped anchor bar 9 and fixing a compression column 10 on the side away from the anchor column 8, and fixing a pier column 11 on the side of the compression column 10 away from the U-shaped anchor bar 9.

[0041] The lower bearing seat 3 foundation is reinforced with U-shaped anchor bars 9 that extend into the pier column 11. The U-shaped anchor bars and the anti-overturning lower bearing seat 3 should be fully welded together in the factory. At the same time, they should be reliably connected to the vertical main bars of the pier column 11 during installation.

[0042] By adopting the above technical solution, this solution uses an H-beam connection 12 fixedly connected to the lower side of the tensile plate 4.

[0043] By adopting the above technical solution, this solution sets a screw 13 fixedly connected to the inner side of the H-beam connection 12, and a stud 14 fixedly connected to the outer side of the screw 13.

[0044] By adopting the above technical solution, this solution provides an H-beam connection 15 fixedly connected to the lower side of the stud 14, and a transverse steel connection 16 fixedly connected to one side of the H-beam connection 15.

[0045] By adopting the above technical solution, this solution provides a horizontal steel connection 16 with an H-beam connection 3 17 fixedly connected to the side away from the H-beam connection 2 15.

[0046] By adopting the above technical solution, this solution provides an H-beam connection 4 18 fixedly connected to one side of the H-beam connection 3 17.

[0047] H-beams offer several advantages. First, they boast high strength. Compared to I-beams, H-beams have significantly higher strength, requiring less material to achieve the same strength requirements, thus saving costs. Second, their regular construction facilitates easy assembly. The regular structure of H-beams allows for greater flexibility in structural construction and improves space utilization. Third, they offer excellent structural stability. Structures constructed with H-beams exhibit high toughness and stability due to their smooth and tight connections, making them suitable for areas with frequent earthquakes.

[0048] During operation, tension plate 4 and tension plate 6 are connected by H-beams, which has the advantages mentioned above, strengthens the connection between the tension plates, and thus enhances the seismic resistance and high strength.

[0049] In use, the upper support seat 1 is first installed. A rectangular cuboid force transmission column 2 of the same height as the beam is added to the foundation of the upper support seat 1. The force transmission column 2 reliably connects the top plate and bottom plate of the steel box girder through full welding, so that the anti-overturning device is integrated with the box girder as a whole. This avoids the anti-overturning structure from cracking the bottom plate of the beam when overturning occurs, which can effectively improve the anti-overturning force. In addition, displacement is reserved in the displacement holes of tension plate 1 4 and tension plate 2 6 to accommodate the movement caused by the contraction and expansion of the beam itself and the displacement of the bridge. Then, U-shaped anchor bars 9 are added to the foundation of the lower support seat 3 and extend into the pier column 11. The U-shaped steel bars and the anti-overturning lower support seat 3 should be fully welded in the factory. At the same time, during installation, they should be reliably connected to the vertical main reinforcement of the pier column 11. H-beams are also installed. H-beams have high strength. Compared with I-beams, H-beams have higher strength and require less material to achieve the same strength requirements, thus saving costs. Furthermore, the regular structure and ease of assembly of H-beams allow for greater flexibility in structural construction and improve space utilization. They also offer good structural stability: structures built with H-beams exhibit high toughness and stability due to their smooth and tight connections, making them suitable for areas with frequent earthquakes. Connecting tension plates 4 and 6 with H-beams provides these advantages, strengthening the connection between the tension plates and thus enhancing seismic resistance.

[0050] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. A continuous steel box girder with anti-overturning curve, comprising an upper bearing seat (1), characterized in that: A force transmission column (2) is fixedly connected to one side of the upper force support (1), a lower force support (3) is fixedly connected to one side of the force transmission column (2), and a tension plate (4) is fixedly connected to the lower side of the lower force support (3).

2. The anti-overturning curved continuous steel box girder according to claim 1, characterized in that: The inner side of the tensile plate (4) is provided with a displacement hole (5).

3. The anti-overturning curved continuous steel box girder according to claim 2, characterized in that: One side of the first tensile plate (4) is movably connected to the second tensile plate (6), and the second tensile plate (6) has a displacement hole (7) on its inner side.

4. The anti-overturning curved continuous steel box girder according to claim 1, characterized in that: An anchor column (8) is fixedly connected to the lower side of the lower support seat (3), and a U-shaped anchor bar (9) is fixedly connected to the lower side of the anchor column (8).

5. The anti-overturning curved continuous steel box girder according to claim 4, characterized in that: The side of the U-shaped anchor bar (9) away from the anchor column (8) is fixedly connected to a compression column (10), and the side of the compression column (10) away from the U-shaped anchor bar (9) is fixedly connected to a pier column (11).

6. The anti-overturning curved continuous steel box girder according to claim 3, characterized in that: The lower side of the tensile plate (4) is fixedly connected to an H-beam connection (12).

7. The anti-overturning curved continuous steel box girder according to claim 6, characterized in that: The inner side of the H-beam connection (12) is fixedly connected with a screw (13), and the outer side of the screw (13) is fixedly connected with a stud (14).

8. The anti-overturning curved continuous steel box girder according to claim 7, characterized in that: The lower side of the stud (14) is fixedly connected to an H-beam connection (15), and one side of the H-beam connection (15) is fixedly connected to a transverse steel connection (16).

9. A continuous steel box girder with anti-overturning curve according to claim 8, characterized in that: The transverse steel connection (16) is fixedly connected to the H-beam connection three (17) on the side away from the H-beam connection two (15).

10. A continuous steel box girder with anti-overturning curve according to claim 9, characterized in that: H-beam connection three (17) is fixedly connected to one side of H-beam connection four (18).

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