Prefabricated bridge

Abstract

The utility model discloses a prefabricated bridge which comprises a pier column, the top end of the pier column is fixedly connected with a first inserting column, the top of the pier column is provided with a cover beam, the bottom of the cover beam is provided with a first inserting hole, the top of the cover beam is provided with a first pouring opening, and the bottom of the first pouring opening is provided with an inclined discharging groove. A clamping groove is formed in the top of the cover beam, and a box beam is arranged in the clamping groove. The bent cap is moved to the position above the pier column, the first inserting column corresponds to the first inserting hole, the bent cap is slowly lowered, the first inserting column slides in the first inserting hole, the bottom of the first inserting column makes contact with the pier column after the first inserting column moves downwards by a certain height, and at the moment, cement is poured into the herringbone channel through the first pouring opening; the first inserting column is arranged in the inclined discharging groove and moves downwards along the inclination angle of the inclined discharging groove, so that the gap between the pier column and the cover beam is poured, the first inserting column is wrapped, the positions of the pier column and the cover beam can be fixed after cement is solidified, and therefore the stability of a bridge in use is improved.

Description

Technical Field

[0001] This utility model relates to the field of bridge prefabrication technology, specifically a prefabricated assembled bridge. Background Technology

[0002] Precast bridge construction is a bridge construction technology that involves prefabricating the main components of the bridge's superstructure, substructure, and auxiliary structures in a factory before transporting them to the construction site for assembly. This construction method differs from traditional on-site bridge construction methods such as rebar tying and concrete pouring, and has significant advantages and characteristics.

[0003] According to CN220789391U, a prefabricated assembled bridge is constructed by installing a mounting frame on the pier. The bottom of the mounting frame is then fixedly connected to the pier using connecting blocks and fixing columns. The fixing columns are inclined to reinforce the connection between the mounting frame and the pier. A first threaded bolt further tightens the connection between the connecting block and the mounting frame. Concrete can be added to the pier's inner cavity through a first hole. After entering the pier's inner cavity, the concrete falls onto the top of a sliding plate. Under the weight of the concrete, the sliding plate tends to slide downwards, but this is prevented by the elastic force of a first spring. Under the frictional action of the locking post and the sliding groove, the sliding plate descends slowly. During this time, concrete will continuously accumulate on the top of the sliding plate. As the sliding plate slowly descends until it reaches the bottom of the sliding groove, the second spring will drive the locking post to extend outward through the groove, thus locking the locking post and the groove together. Because the concrete slowly accumulates on the top of the sliding plate and descends slowly with the sliding plate, the concrete at the top of the sliding plate will not be added too quickly, resulting in voids in the middle of the concrete, which would cause holes in the concrete pouring inside the pier and quality problems.

[0004] The connection between the mounting frame and the pier can be achieved through the aforementioned connecting block and fixing column. However, in actual use, the connecting block is only fixed to the mounting frame by the first threaded bolt, which has poor stability and poses certain safety hazards. Utility Model Content

[0005] The purpose of this invention is to provide a prefabricated assembled bridge to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a prefabricated assembled bridge, including piers, a first insert column fixedly connected to the top of the pier, a cap beam provided at the top of the pier, a first insertion hole opened at the bottom of the cap beam, a first pouring opening opened at the top of the cap beam, a downwardly sloping material trough opened at the bottom of the first pouring opening, a slot opened at the top of the cap beam, a box girder provided inside the slot, an installation hole opened in the middle of the box girder, and a connecting column provided inside the installation hole.

[0007] As a further preferred embodiment of this technical solution, the number of the first inserts is set to multiple, and the multiple first inserts and the first insertion holes are adapted to each other. The number of the inclined downward material troughs is set to two, and the two inclined downward material troughs and the first pouring port form a human-shaped channel. The box girder adopts a T-shaped structure.

[0008] As a further preferred embodiment of this technical solution, an upper pad is fixedly connected to the bottom end of the connecting column, an upper rotating seat is fixedly connected to the bottom end of the upper pad, an inclined support plate is rotatably connected to the bottom of the upper rotating seat, a lower rotating seat is rotatably connected to the bottom of the inclined support plate, and a lower pad is fixedly connected to the side of the lower rotating seat away from the inclined support plate.

[0009] As a further preferred embodiment of this technical solution, the upper pad is connected by connecting screws and connecting columns, there are two upper rotating seats, the number of inclined support plates corresponds to the number of upper rotating seats, and the lower pad is fixedly connected to the cover beam.

[0010] As a further preferred embodiment of this technical solution, the pier column is provided with second pouring ports on the left and right sides, and a longitudinal material discharge trough is provided at the bottom of the second pouring port. A steel column is provided inside the longitudinal material discharge trough, and a second insertion hole is provided at the bottom of the pier column.

[0011] As a further preferred embodiment of this technical solution, the bottom end of the pier is provided with a foundation, the top end of the foundation is fixedly connected with a second insert column, the bottom end of the foundation is fixedly connected with a pile foundation, and the top end of the foundation is fixedly connected with an angle steel.

[0012] As a further preferred embodiment of this technical solution, the second insertion post is located inside the second insertion hole, and multiple pile foundations are provided, with the angle steel and the pier column being fixedly connected.

[0013] This utility model provides a prefabricated assembled bridge, which has the following advantages:

[0014] (1) This utility model moves the cap beam above the pier and aligns the first insert with the first insertion hole. The cap beam is then slowly lowered, and the first insert slides inside the first insertion hole. After it has moved down a certain height, its bottom contacts the pier. At this time, cement is poured into the human-shaped channel through the first pouring port and moves down along the inclined angle of the trough, thereby filling the gap between the pier and the cap beam and wrapping the first insert. After the cement solidifies, the positions of the pier and the cap beam are fixed, thereby improving the stability of the bridge during use.

[0015] (2) This utility model uses connecting screws to install the upper pad under the connecting column, rotates the inclined support plate to make the lower pad contact the cap beam, and uses connecting screws to fix it on the cap beam, thereby strengthening the connection between the box beam and the cap beam, and supporting the box beam with the inclined support plate to avoid bending during use due to its excessive length. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model;

[0017] Figure 2 This is a bottom view of the structure of this utility model;

[0018] Figure 3 This is a schematic diagram of the mounting hole structure of this utility model;

[0019] Figure 4 This is a schematic diagram of the unfolded structure of the pier and cap beam of this utility model;

[0020] Figure 5 This is a schematic diagram of the cross-sectional structure of the pier and cap beam of this utility model;

[0021] Figure 6 This is a schematic diagram of the inclined support plate structure of this utility model.

[0022] In the diagram: 1. Pier column; 2. First insert column; 3. Cap beam; 4. First insertion hole; 5. First pouring opening; 6. Inclined downward material chute; 7. Slot; 8. Box girder; 9. Installation hole; 10. Connecting column; 11. Upper pad plate; 12. Upper pivot; 13. Inclined support plate; 14. Lower pivot; 15. Lower pad plate; 16. Second pouring opening; 17. Longitudinal material chute; 18. Steel column; 19. Second insertion hole; 20. Pier cap; 21. Second insert column; 22. Pile foundation; 23. Angle steel. Detailed Implementation

[0023] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0024] This utility model provides a technical solution: such as Figure 1 and Figure 6 As shown in this embodiment, a prefabricated assembled bridge includes a pier 1, a first insert 2 fixedly connected to the top of the pier 1, a cap beam 3 provided on the top of the pier 1, a first insert hole 4 opened at the bottom of the cap beam 3, a first pouring opening 5 opened at the top of the cap beam 3, a downwardly sloping material trough 6 opened at the bottom of the first pouring opening 5, a slot 7 opened at the top of the cap beam 3, a box girder 8 provided inside the slot 7, an installation hole 9 opened in the middle of the box girder 8, and a connecting column 10 provided inside the installation hole 9.

[0025] By moving the cap beam 3 above the pier 1 and aligning the first insert 2 with the first insertion hole 4, the cap beam 3 is slowly lowered. The first insert 2 slides inside the first insertion hole 4. After moving down a certain height, its bottom contacts the pier 1. At this time, cement is poured into the human-shaped channel through the first pouring port 5 and moves down along the inclined downward material trough 6, thereby filling the gap between the pier 1 and the cap beam 3 and wrapping the first insert 2. After the cement solidifies, the positions of the pier 1 and the cap beam 3 are fixed, thereby improving the stability of the bridge during use. In addition, the inclined downward material trough 6 can slow down the speed of cement movement, thereby reducing the generation of air bubbles and voids.

[0026] There are multiple first inserts 2, and multiple first inserts 2 are matched with first insertion holes 4. There are two inclined downward material troughs 6, and the two inclined downward material troughs 6 and the first pouring port 5 form a human-shaped passage. The box girder 8 adopts a T-shaped structure.

[0027] The bottom end of the connecting column 10 is fixedly connected to an upper pad 11, the bottom end of the upper pad 11 is fixedly connected to an upper swivel 12, the bottom of the upper swivel 12 is rotatably connected to an inclined support plate 13, the bottom of the inclined support plate 13 is rotatably connected to a lower swivel 14, and the side of the lower swivel 14 away from the inclined support plate 13 is fixedly connected to a lower pad 15.

[0028] The upper pad 11 is installed below the connecting column 10 by connecting screws. The inclined support plate 13 is rotated so that the lower pad 15 contacts the cap beam 3 and is fixed to the cap beam 3 by connecting screws, thereby reinforcing the connection between the box beam 8 and the cap beam 3. The inclined support plate 13 supports the box beam 8 to prevent it from bending during use due to its excessive length.

[0029] The upper pad 11 is connected to the connecting column 10 by connecting screws. There are two upper rotating seats 12. The number of inclined support plates 13 corresponds to the number of upper rotating seats 12. The lower pad 15 is fixedly connected to the cover beam 3.

[0030] The pier 1 has a second pouring port 16 on the left and right sides. The bottom of the second pouring port 16 is provided with a longitudinal material discharge trough 17. The interior of the longitudinal material discharge trough 17 is provided with a steel column 18. The bottom of the pier 1 has a second insertion hole 19.

[0031] Cement is poured into the pier 1 through the second pouring port 16, and steel columns 18 are added into the longitudinal feeding trough 17. After the cement solidifies, the positions of the pier 1 and the abutment 20 can be fixed. Since the steel columns 18 are installed inside the pier 1, they have strong tensile, bending and torsional resistance, which can effectively reduce the deformation and cracking of the pier 1, thereby improving the stability and safety of the bridge.

[0032] The bottom of the pier 1 is provided with a pile cap 20, the top of the pile cap 20 is fixedly connected with a second insert column 21, the bottom of the pile cap 20 is fixedly connected with a pile foundation 22, and the top of the pile cap 20 is fixedly connected with an angle steel 23.

[0033] The second insertion post 21 is located inside the second insertion hole 19. Multiple pile foundations 22 are provided, and the angle steel 23 is fixedly connected to the pier post 1.

[0034] This utility model provides a prefabricated assembled bridge, the specific working principle of which is as follows:

[0035] In use, a foundation trench is excavated at the work site, and pile foundations 22 and pile caps 20 are poured using cement and steel bars. A crane is used to move the pier 1 to the work site, aligning the second insert 21 with the second insertion hole 19, causing the pier 1 to move downwards. The second insert 21 slides inside the second insertion hole 19, bringing the pier 1 into contact with the pile cap 20. At this point, cement is poured into the pier 1 through the second pouring port 16, and steel columns 18 are added into the longitudinal discharge chute 17. After the cement solidifies, the crane is used to move the cap beam 3 above the pier 1, aligning the first insert 2 with the first insertion hole 4. The cap beam 3 is then slowly lowered, with the first insert 2 sliding inside the first insertion hole 4. After lowering a certain height, its bottom contacts the pier 1. At this point, the second insert 21 slides inside the second insertion hole 4, bringing the pier 1 into contact with the pile cap 20. Cement is poured into the human-shaped passage through a pouring port 5 and moved down along the inclined material trough 6 to fill the gap between the pier 1 and the cap beam 3, and to wrap the first insert 2. After the cement solidifies, the positions of the pier 1 and the cap beam 3 are fixed. Multiple box girders 8 are installed inside the slots 7 of the cap beam 3, and connecting columns 10 are installed in the mounting holes 9 to strengthen the connection between the box girders 8. The upper pad 11 is installed below the connecting column 10 by connecting screws. The inclined support plate 13 is rotated so that the lower pad 15 contacts the cap beam 3 and is fixed to the cap beam 3 by connecting screws to strengthen the connection between the box girder 8 and the cap beam 3. The box girder 8 is supported by the inclined support plate 13, thus completing the assembly of the bridge.

[0036] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A precast assembly bridge comprising a pier column (1), characterized in that: The top end of the pier column (1) is fixedly connected with a first inserting column (2), the top of the pier column (1) is provided with a cap beam (3), the bottom of the cap beam (3) is provided with a first inserting hole (4), the top of the cap beam (3) is provided with a first pouring opening (5), the bottom of the first pouring opening (5) is provided with a downward inclined chute (6), the top of the cap beam (3) is provided with a clamping groove (7), the inside of the clamping groove (7) is provided with a box girder (8), the middle of the box girder (8) is provided with a mounting hole (9), and the inside of the mounting hole (9) is provided with a connecting column (10).

2. The precast fabricated bridge according to claim 1, wherein: The first inserting column (2) is provided with a plurality of first inserting columns (2), and the plurality of first inserting columns (2) and the first inserting hole (4) are matched, the number of the downward inclined chute (6) is two, the two downward inclined chutes (6) and the first pouring opening (5) form a human-shaped channel, and the box girder (8) adopts a T-shaped structure.

3. The precast fabricated bridge according to claim 1, wherein: The bottom end of the connecting column (10) is fixedly connected with an upper pad plate (11), the bottom end of the upper pad plate (11) is fixedly connected with an upper swivel seat (12), the bottom of the upper swivel seat (12) is rotatably connected with an inclined supporting plate (13), the bottom of the inclined supporting plate (13) is rotatably connected with a lower swivel seat (14), and the side, away from the inclined supporting plate (13), of the lower swivel seat (14) is fixedly connected with a lower pad plate (15).

4. The precast bridge according to claim 3, wherein: The upper pad plate (11) is connected with the connecting column (10) through connecting screws, the number of the upper swivel seat (12) is two, the number of the inclined supporting plate (13) corresponds to that of the upper swivel seat (12), and the lower pad plate (15) is fixedly connected with the cap beam (3).

5. The precast bridge according to claim 1, wherein: The left and right sides of the pier column (1) are provided with second pouring openings (16), the bottom of the second pouring opening (16) is provided with a longitudinal chute (17), the inside of the longitudinal chute (17) is provided with a steel column (18), and the bottom of the pier column (1) is provided with a second inserting hole (19).

6. The precast, fabricated bridge of claim 1, wherein: The bottom end of the pier column (1) is provided with a bearing platform (20), the top end of the bearing platform (20) is fixedly connected with a second inserting column (21), the bottom end of the bearing platform (20) is fixedly connected with a pile foundation (22), and the top end of the bearing platform (20) is fixedly connected with an angle steel (23).

7. The precast bridge according to claim 6, wherein: The second inserting column (21) is located in the second inserting hole (19), the number of the pile foundation (22) is multiple, and the angle steel (23) is fixedly connected with the pier column (1).

Images