Bridge widening device

Abstract

The invention relates to a bridge widening device, and relates to the technical field of bridge engineering and building construction.The bridge widening device comprises a main bridge and a connecting bridge body, concrete modules are fixedly connected to the upper portion of the main bridge and the upper portion of the connecting bridge body, and outer connecting blocks which are evenly distributed are fixedly connected to the right side of the concrete module on the left side; the right end of the outer connecting block is fixedly connected with an extending section, the left side of the concrete module on the right side is provided with evenly-distributed concave grooves, the interiors of the concave grooves are fixedly connected with inner connecting blocks, the left ends of the inner connecting blocks are fixedly connected with two inclined blocks, and the inner connecting blocks are connected to the interiors of the outer connecting blocks in a clamped mode. And the outer connecting block and the extending section are connected in the concave groove in a clamping manner. The construction method has the effects of efficiently and stably mounting the bridge, reducing steel bar damage, preventing displacement and loosening, quickly and accurately mounting, reducing labor time consumption, improving construction efficiency, improving structural safety, supporting bridge construction, avoiding old bridge dismantling and treating waste materials.

Description

Technical Field

[0001] This application relates to the technical fields of bridge engineering and construction technology, and particularly relates to a device for bridge widening. Background Art

[0002] A device for bridge widening is usually a device for structurally reconstructing and widening old or narrow bridges, aiming to improve the traffic capacity of the bridge, ensure traffic smoothness, and particularly meet the requirements of the relatively large width of modern vehicles. Usual widening devices include telescopic beams, widening platforms, sliding devices, etc. Through these devices, the traffic function of the bridge can be expanded and enhanced without completely demolishing the original bridge.

[0003] Currently, bridge widening is an important means to improve the traffic capacity of existing roads. With the acceleration of the urbanization process, the demand for bridge expansion is increasing day by day. Traditional widening methods usually require partial or overall demolition of the old bridge structure, but the original steel bar skeleton is easily damaged during the demolition process, affecting the connection reliability between the new and old bridge bodies. In addition, the cleaning efficiency of concrete waste is low, further prolonging the construction period and increasing costs. In recent years, domestic and foreign research has mainly focused on new connection structures or modular assembly technologies, but neither has effectively solved the problems of steel bar protection and waste treatment during the demolition stage.

[0004] In view of the above related technologies, a device for bridge widening is provided. Summary of the Invention

[0005] The purpose of this application is to provide a device for bridge widening, aiming to improve the problems in the prior art that the original steel bar skeleton is easily damaged during the demolition process, affecting the connection reliability between the new and old bridge bodies, and the low cleaning efficiency of concrete waste.

[0006] A device for bridge widening provided by the present application includes a main bridge and a connecting bridge body. Concrete modules are fixedly connected to the upper parts of the main bridge and the connecting bridge body, and are fixedly connected by steel bars to increase the firmness and stability of the widened bridge body. On the right side of the left concrete module, evenly distributed outer connection blocks are fixedly connected. The right end of the outer connection block is fixedly connected with an extension section. On the left side of the right concrete module, evenly distributed concave grooves are opened. An inner connection block is fixedly connected inside the concave groove. The left end of the inner connection block is fixedly connected with two inclined blocks. The inner connection block is snap-connected inside the outer connection block, and the outer connection block and the extension section are snap-connected inside the concave groove. Inside the left concrete module, installation grooves with the same position and quantity as the inner connection block are opened. An inclined groove is opened on the left side of the installation groove. The inner connection block and the inclined block are respectively snap-connected inside the installation groove and the inclined groove. By snap-connecting the inner connection block inside the outer connection block, and the left half and the inclined block are inserted into the left concrete module, the firmness of the connection between the connecting bridge body and the old bridge is increased. And by inserting the right end of the outer connection block and the extension section into the right concrete module, the firmness of the widened part is further increased. On both sides inside the extension section, positioning holes are opened. A positioning component is slidably connected inside the positioning hole. The positioning component is used for further installing and strengthening the outer connection block.

[0007] Preferably, an extension plate is installed on the upper part of the concrete module. On the left and right sides inside the extension plate, evenly distributed T-shaped cylindrical grooves are opened. A screw rod is fixedly connected to the upper side inside the concrete module. The screw rod passes through the T-shaped cylindrical groove. A nut is threadedly connected to the outer part of the screw rod. By initially installing and fixing the extension plate, the stability, flatness and good support of the subsequent concrete pouring layer are ensured, and it is ensured that the widened part of the bridge can bear the pressure of vehicles. The nut is installed inside the T-shaped cylindrical groove, and a concrete pouring layer is poured outside the extension plate.

[0008] Preferably, evenly distributed buffer cylinders are fixedly connected inside the concrete module. On the upper side inside the buffer cylinder, a top plate is fixedly connected. A sliding cavity is opened inside the top plate. A buffer pad is installed on the upper side inside the sliding cavity. The lower side of the buffer pad is attached and connected to a sliding rod. The bottom of the sliding rod is fixedly connected with a movable plate. The inside of the lower side of the buffer cylinder is filled with an elastic filler to slow down the pressure brought by vehicle driving. The sliding rod and the movable plate are installed inside the elastic filler.

[0009] Preferably, limiting plates are fixedly connected to the left and right sides of the movable plate. Limiting grooves are opened on the left and right sides inside the buffer cylinder. The limiting plates are slidably connected inside the limiting grooves to ensure uniform absorption of the slowed-down pressure and ensure that the bridge deck is always on a horizontal line.

[0010] Preferably, there is a gap between the T-shaped cylindrical groove and the screw rod, and a gap is formed between the extension plate and the main bridge and the connecting bridge body. The concrete casting layer is cast into one piece with the extension plate, the main bridge and the connecting bridge body through the T-shaped cylindrical groove and the gap, ensuring that there is no gap at the connection between the old bridge body and the widened part, which would cause breakage during subsequent use, thereby avoiding safety hazards to the bridge.

[0011] Preferably, the positioning assembly comprises a positioning head, the positioning head is slidably connected to the inside of the positioning hole, and a spring is fixedly connected to the side of the positioning head away from the other side to increase the firmness of the connection to the wide part.

[0012] Preferably, through grooves are provided on both the front and rear sides of the concave groove, the end of the spring away from the positioning head is fixedly connected to the inside of the through groove, and the positioning hole is provided in the concrete module that is engaged with the inner side of the extension section to effectively connect and reinforce the connecting bridge body.

[0013] Preferably, the adjacent sides of the concrete modules are fixedly connected with mounting blocks, the upper part of the mounting blocks are fixedly connected with protrusions, the outer part of the mounting blocks are snap-connected with a waterstop plate, the upper left and right openings of the waterstop plate are provided with grooves with the same number as the protrusion positions, the protrusions are snap-connected inside the grooves, thereby increasing the firmness of the installation of the waterstop plate and avoiding the waterstop plate from falling off the bridge during subsequent use.

[0014] Preferably, the positioning head is slidably connected to the interior of the through groove to ensure that the extension section enters the concave groove without obstruction.

[0015] Preferably, the sliding rod is T-shaped, and the upper end of the sliding rod is slidably connected to the inside of the sliding cavity to ensure that the sliding rod will not be separated from the top plate 22 when moving up and down, so that it can effectively relieve the pressure.

[0016] In summary, the present application includes at least one of the following beneficial technical effects: 1. This application installs the concrete module with the main bridge and the connecting bridge body through steel bars, and then installs the main bridge and the connecting bridge body. The inner connecting block is aligned with the outer connecting block and inserted into the installation groove. The inclined block is inserted into the inclined groove to increase the connection force. When the connecting bridge body moves, the extension section is clamped in the concave groove to squeeze the positioning head, so that the spring accumulates force and the positioning head moves out of the positioning hole. After the extension section is fully clamped, the positioning head is reset to position, so as to achieve efficient and stable installation of the bridge, reduce steel bar damage, prevent displacement and loosening, install quickly and accurately, reduce labor time, improve construction efficiency, strengthen structural safety, support bridge construction, and avoid dismantling old bridges and waste disposal; 2. In this application, the T-shaped cylindrical groove of the extension plate is aligned with the screw rod and penetrated, and then fixed by a nut. Subsequently, concrete is poured on the extension plate. Through the gap between the T-shaped cylindrical groove and the screw rod and the gaps on both sides of the extension plate, a pouring layer is formed to integrate with the main bridge and the connecting bridge body. When widening the bridge, there is no gap with the main bridge, avoiding cracks and potential safety hazards, and improving the structural stability, durability, and crack resistance ability. 3. When pressure is exerted by a vehicle during driving, it is transmitted through the concrete pouring layer and the extension plate to the top plate, squeezing the buffer pad and the sliding rod. The sliding of the sliding rod drives the movable plate to move downward and squeeze the elastic filler, reducing the pressure and preventing the bridge deck from breaking. When the movable plate moves, it drives the limiting block to slide in the limiting groove, ensuring the smooth movement of the movable plate and evenly reducing the pressure, avoiding unevenness and potholes on the bridge deck, achieving shock absorption and load dispersion of the bridge, improving the structural stability, avoiding bridge deck problems, and enhancing the safety and durability of the bridge. Description of the Drawings

[0017] Figure 1 is the overall structural schematic diagram of a device for widening a bridge according to an embodiment of this application; Figure 2 is the internal structural schematic diagram of a device for widening a bridge according to an embodiment of this application; Figure 3 is the sectional structural schematic diagram of a device for widening a bridge according to an embodiment of this application; Figure 4 is the top view of the widening structure of a device for widening a bridge according to an embodiment of this application; Figure 5 is Figure 4 the enlarged view at B in Figure 6 is the sectional view of the pressure buffering structure of a device for widening a bridge according to an embodiment of this application; Figure 7 is Figure 3 the enlarged view at A in

[0018] Description of the Reference Numerals: 1, main bridge; 2, connecting bridge body; 3, concrete module; 4, outer connection block; 5, extension section; 6, inner connection block; 7, inclined block; 8, installation groove; 9, inclined groove; 10, concave groove; 11, through groove; 12, spring; 13, positioning head; 14, positioning hole; 15, extension plate; 16, screw rod; 17, nut; 18, T-shaped cylindrical groove; 19, gap; 20, concrete pouring layer; 21, buffer cylinder; 22, top plate; 23, sliding cavity; 24, buffer pad; 25, sliding rod; 26, movable plate; 27, limiting plate; 28, limiting groove; 29, elastic filler; 30, water stop plate; 31, groove; 32, installation block; 33, convex block. Detailed Embodiments

[0019] The following is combined with the attached Figure 1-Appendix Figure 7 , this application will be further described in detail below.

[0020] Embodiment: Referring to Figure 1 , Figure 3 , Figure 4 and Figure 5 , a device for widening a bridge, comprising a main bridge 1 and a connecting bridge body 2. Concrete modules 3 are fixedly connected to the upper parts of both the main bridge 1 and the connecting bridge body 2. Uniformly distributed outer connecting blocks 4 are fixedly connected to the right side of the left concrete module 3. An extension section 5 is fixedly connected to the right end of the outer connecting block 4. Uniformly distributed concave grooves 10 are formed on the left side of the right concrete module 3. Inner connecting blocks 6 are fixedly connected to the inside of the concave grooves 10. Two inclined blocks 7 are fixedly connected to the left end of the inner connecting block 6. The inner connecting block 6 is snap-connected to the inside of the outer connecting block 4. The outer connecting block 4 and the extension section 5 are snap-connected to the inside of the concave groove 10. Installation grooves 8 with the same number and positions as the inner connecting blocks 6 are formed inside the left concrete module 3. Inclined grooves 9 are formed on the left side of the installation grooves 8. The inner connecting block 6 and the inclined block 7 are respectively snap-connected to the inside of the installation groove 8 and the inclined groove 9. Positioning holes 14 are formed on both sides inside the extension section 5. A positioning component is slidably connected to the inside of the positioning holes 14. The positioning component is used for further installing and strengthening the outer connecting block 4; The positioning component includes a positioning head 13 which is slidably connected to the inside of the positioning hole 14. A spring 12 is fixedly connected to the side of the positioning head 13 away from each other. Through grooves 11 are formed on both the front and rear sides of the concave groove 10. The end of the spring 12 away from the positioning head 13 is fixedly connected to the inside of the through groove 11. The positioning hole 14 is formed in the concrete module 3 where the extension section 5 is snap-connected to the inside. The positioning head 13 is slidably connected to the inside of the through groove 11.

[0021] By separately installing and connecting the concrete module 3 with the main bridge 1 and the connecting bridge body 2, and then installing the main bridge 1 and the connecting bridge body 2, align the inner connecting block 6 with the outer connecting block 4, insert it into the installation groove 8 opened in the concrete module 3 on the main bridge 1, and at the same time drive the inclined block 7 to snap into the inclined groove 9. Under the clamping of the inclined surface of the inclined block 7, the connection area and adhesion between the connecting bridge body 2 and the main bridge 1 are increased. As the connecting bridge body 2 moves, the extension section 5 snaps into the concave groove 10. As the outer connecting block 4 moves, the extension section 5 squeezes the positioning head 13, causing it to synchronously squeeze the spring 12, storing energy to generate a resilience force. The positioning head 13 moves out of the positioning hole 14 and into the through groove 11. When the extension section 5 is completely snapped into the concave groove 10, the positioning head 13 is no longer squeezed, and it is pushed under the resilience force of the spring 12 and reinserted into the positioning hole 14 to position the outer connecting block 4, further strengthening the firmness and stability of the installation between the connecting bridge body 2 and the main bridge 1, achieving efficient, stable, and reliable connection of the bridge connection structure, reducing the steel bar damage rate, ensuring that the connection structure will not displace or loosen when stressed, and achieving rapid and precise installation between the connecting bridge body 2 and the main bridge 1, reducing the time for manual adjustment and fixation, improving the construction efficiency, enhancing the stability and safety of the structure, providing reliable technical support for the construction of the bridge project, and without the need to demolish the old bridge part, eliminating the problem of dealing with the concrete waste generated after demolishing the old bridge part.

[0022] Reference Figures 1 - 3 , an extension plate 15 is installed on the upper part of the concrete module 3. Uniformly distributed T-shaped cylindrical grooves 18 are opened on both the left and right sides inside the extension plate 15. A screw rod 16 is fixedly connected to the upper side inside the concrete module 3. The screw rod 16 passes through the T-shaped cylindrical groove 18. A nut 17 is threadedly connected to the outside of the screw rod 16. The nut 17 is installed inside the T-shaped cylindrical groove 18. A concrete pouring layer 20 is poured outside the extension plate 15. There is a gap between the T-shaped cylindrical groove 18 and the screw rod 16. A gap 19 is formed between the extension plate 15, the main bridge 1, and the connecting bridge body 2. The concrete pouring layer 20 is integrally poured with the extension plate 15, the main bridge 1, and the connecting bridge body 2 through the T-shaped cylindrical groove 18 and the gap 19.

[0023] By aligning the T-shaped cylindrical groove 18 on the extension plate 15 with the screw rod 16, passing the screw rod 16 through the T-shaped cylindrical groove 18, then successively sleeving two nuts 17 on the outside of the screw rod 16 and thread-connecting them thereto, and then pouring concrete on the extension plate 15. Under the action of the gap existing between the T-shaped cylindrical groove 18 and the screw rod 16 and the voids 19 formed on the left and right sides of the extension plate 15, when the concrete is poured to form the concrete pouring layer 20, it is fixedly connected and integrated with the main bridge 1 and the connecting bridge body 2, ensuring that while widening the bridge, there is no gap between it and the main bridge 1, avoiding cracks from occurring during subsequent use, resulting in potential safety hazards for the bridge body, achieving the integrity and seamless connection of the bridge structure, improving the structural stability, durability of the bridge, enhancing the crack resistance during use, ensuring the safety and reliability of the bridge during use, and thus avoiding potential safety hazards that may occur during subsequent use.

[0024] Reference Figure 1 、 Figure 3 、 Figure 4 and Figure 6 , inside the concrete module 3, there are uniformly distributed buffer cylinders 21 fixedly connected. On the upper side inside the buffer cylinder 21, there is a top plate 22 fixedly connected. Inside the top plate 22, there is a sliding cavity 23 opened. On the upper side inside the sliding cavity 23, there is a buffer pad 24 installed. The lower side of the buffer pad 24 is in fitting connection with a sliding rod 25. The bottom of the sliding rod 25 is fixedly connected with a movable plate 26. The lower side inside the buffer cylinder 21 is filled with an elastic filler 29. The sliding rod 25 and the movable plate 26 are installed inside the elastic filler 29. On both the left and right sides of the movable plate 26, there are limit plates 27 fixedly connected. On both the left and right sides inside the buffer cylinder 21, there are limit grooves 28 opened. The limit plates 27 are slidably connected inside the limit grooves 28. The sliding rod 25 is in a T shape, and the upper end of the sliding rod 25 is slidably connected inside the sliding cavity 23.

[0025] When a vehicle is driving and applying pressure to the bridge body, it applies pressure to the top plate 22 through the concrete pouring layer 20 and the extension plate 15, causing the buffer pad 24 to be squeezed, the sliding rod 25 to be synchronously squeezed and slide inside the sliding cavity 23, and at the same time moving the movable plate 26 downward to squeeze the elastic filler 29, so as to slow down the pressure during vehicle driving, avoid the bridge deck being unable to bear the pressure and resulting in the bridge deck being damaged and fractured, and drive the limit plates 27 while the movable plate 26 moves, making them slide inside the limit grooves 28, ensuring the smooth movement of the movable plate 26, ensuring that the pressure of the vehicle on the bridge is evenly reduced, avoiding uneven local stress and resulting in uneven height on the bridge deck and the formation of road pits. It realizes shock absorption and buffering of the pressure generated by the vehicle on the bridge during driving, load dispersion, and improvement of structural stability, thereby effectively avoiding problems such as bridge deck damage, fracture, and uneven height, and improving the safety and durability of the bridge.

[0026] Reference Figure 1 、 Figure 2 、 Figure 3 and Figure 7 , on the closer sides of the concrete module 3, there are fixedly connected installation blocks 32. On the upper part of the installation block 32, there is a convex block 33 fixedly connected. The outside of the installation block 32 is snap-connected with a water stop plate 30. At the openings on the upper left and right sides of the water stop plate 30, there are grooves 31 with the same number and positions as the convex block 33. The convex block 33 is snap-connected inside the groove 31.

[0027] The water on the bridge surface is discharged through the water stop plate 30. The water stop plate 30 is a conventional structural setting in the field of bridge widening. The specific structure and working principle are not strictly restricted here. Under the action of the installation block 32 and the convex block 33, while the water stop plate 30 is clamped outside the installation block 32, the convex block 33 is snap-connected in the groove 31, which increases the firmness of the installation of the water stop plate 30, ensures that the water stop plate 30 can be put into use for a long time, and extends its service life.

[0028] The embodiments of this specific implementation manner are all preferred embodiments of this application, and do not limit the protection scope of this application accordingly. The same components are represented by the same reference numerals. Therefore: All equivalent changes made according to the structure, shape, and principle of this application should be covered within the protection scope of this application.

Claims

1. A device for widening a bridge, comprising a main bridge (1) and a connecting bridge body (2), characterized in that, Concrete modules (3) are fixedly connected to the upper parts of the main bridge (1) and the connecting bridge body (2). On the right side of the left concrete module (3), uniformly distributed outer connection blocks (4) are fixedly connected. The right end of the outer connection block (4) is fixedly connected with an extension section (5). On the left side of the right concrete module (3), uniformly distributed concave grooves (10) are formed. Inside the concave groove (10), an inner connection block (6) is fixedly connected. The left end of the inner connection block (6) is fixedly connected with two inclined blocks (7). The inner connection block (6) is snap-fitted inside the outer connection block (4). The outer connection block (4) and the extension section (5) are snap-fitted inside the concave groove (10). Inside the left concrete module (3), installation grooves (8) with the same position and quantity as the inner connection block (6) are formed. An inclined groove (9) is formed on the left side of the installation groove (8). The inner connection block (6) and the inclined block (7) are respectively snap-fitted inside the installation groove (8) and the inclined groove (9). On both sides inside the extension section (5), positioning holes (14) are formed. Inside the positioning holes (14), a positioning component is slidably connected. The positioning component is used for further installation and reinforcement of the outer connection block (4).

2. The device for widening a bridge according to claim 1, characterized in that, An extension plate (15) is installed on the upper part of the concrete module (3). On the left and right sides inside the extension plate (15), uniformly distributed T-shaped cylindrical grooves (18) are formed. Inside the upper side of the concrete module (3), a screw rod (16) is fixedly connected. The screw rod (16) penetrates through the T-shaped cylindrical groove (18). A nut (17) is threadedly connected to the outer part of the screw rod (16). The nut (17) is installed inside the T-shaped cylindrical groove (18). A concrete pouring layer (20) is poured outside the extension plate (15).

3. The device for bridge widening according to claim 1, characterized in that, Uniformly distributed buffer cylinders (21) are fixedly connected inside the concrete module (3). On the upper side inside the buffer cylinder (21), a top plate (22) is fixedly connected. Inside the top plate (22), a sliding cavity (23) is formed. Inside the upper side of the sliding cavity (23), a buffer pad (24) is installed. The lower side of the buffer pad (24) is in fit connection with a sliding rod (25). The bottom of the sliding rod (25) is fixedly connected with a movable plate (26). The inside of the lower side of the buffer cylinder (21) is filled with an elastic filler (29). The sliding rod (25) and the movable plate (26) are installed inside the elastic filler (29).

4. The device for bridge widening according to claim 3, characterized in that, On the left and right sides of the movable plate (26), limit plates (27) are fixedly connected. On the left and right sides inside the buffer cylinder (21), limit grooves (28) are formed. The limit plates (27) are slidably connected inside the limit grooves (28).

5. The device for widening a bridge according to claim 2, characterized in that, There is a gap between the T-shaped cylindrical groove (18) and the screw rod (16). A gap (19) is formed between the extension plate (15) and the main bridge (1) and the connecting bridge body (2). The concrete pouring layer (20) is integrally poured with the extension plate (15), the main bridge (1), and the connecting bridge body (2) through the T-shaped cylindrical groove (18) and the gap (19).

6. The device for bridge widening according to claim 1, characterized in that, The positioning component includes a positioning head (13), the positioning head (13) is slidably connected to the inside of a positioning hole (14), and a spring (12) is fixedly connected to one side of the positioning head (13) away from each other.

7. The device for bridge widening according to claim 6, characterized in that, Through grooves (11) are formed on both the front and rear sides of the concave groove (10), one end of the spring (12) away from the positioning head (13) is fixedly connected to the inside of the through groove (11), and the positioning hole (14) is formed in the concrete module (3) that is snap-fitted to the inner side of the extension section (5).

8. The device for widening a bridge according to claim 1, wherein Mounting blocks (32) are fixedly connected to the closer sides of the concrete modules (3), convex blocks (33) are fixedly connected to the upper parts of the mounting blocks (32), a water stop plate (30) is snap-fitted to the outside of the mounting blocks (32), grooves (31) with the same number and positions as the convex blocks (33) are formed at the openings on the left and right sides of the upper part of the water stop plate (30), and the convex blocks (33) are snap-fitted to the inside of the grooves (31).

9. The device for widening a bridge according to claim 6, wherein, The positioning head (13) is slidably connected to the inside of the through groove (11).

10. The device for widening a bridge according to claim 3, characterized in that, The sliding rod (25) is in a T shape, and the upper end of the sliding rod (25) is slidably connected to the inside of a sliding cavity (23).

Images