Bridge expansion joint with rapid drainage function

Abstract

The present application relates to the technical field of bridge, in particular to a bridge expansion joint with quick drainage function. The bridge expansion joint comprises a cover plate, a water collecting ditch, a water stop belt, a fastener, a buried structure of a beam body, the water collecting ditch is vertically located in the expansion joint slot of the beam body, the height of the expansion joint slot is equal to that of the leveling layer and the paving layer, the water collecting ditch is longitudinally located on both sides of the expansion joint of the beam body, and the water collecting ditch is linearly arranged in the width direction of the beam body. The cover plate is located in the paving layer above the water collecting ditch, the water stop belt is located in the expansion joint of the bridge below the cover plate, and after the water collecting ditch is installed, steel fiber reinforced concrete is poured in the expansion joint slot. The present application can change the water accumulation phenomenon at the concave vertical curve of the bridge deck of the municipal viaduct with long and large longitudinal slope under heavy rainfall environment, improve the drainage efficiency of the bridge deck in this range, and improve the traffic environment.

Description

Technical Field

[0001] This invention relates to the field of bridge technology, specifically to a bridge expansion joint with rapid drainage function. Background Technology

[0002] Existing bridge drainage systems primarily rely on the weight of water, which collects along the longitudinal and transverse slopes of the bridge deck and then drains to the outside through transverse storm drains. Municipal elevated bridges, compared to ground-level bridges, are characterized by their long continuous distances and enclosed environments, generally only interacting with the outside world through transverse storm drains. However, for municipal elevated bridges with long, steep longitudinal slopes, during heavy rainfall, rainwater cannot drain through the transverse storm drains in time. This causes rainwater to accumulate along the longitudinal slope of the bridge deck at concave vertical curves, resulting in a large instantaneous flow rate. This large flow exceeds the discharge capacity of the transverse storm drains within this range, causing water accumulation on the bridge surface, reducing traffic capacity, and leading to traffic congestion.

[0003] How to address the issue of water accumulation at the concave vertical curves of the bridge deck on long, steeply sloping municipal viaducts during heavy rainfall, improve the drainage efficiency of the bridge deck in this area, and improve the traffic environment is a problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0004] The purpose of this invention is to provide a bridge expansion joint with rapid drainage function to solve the problems existing in the prior art, change the phenomenon of water accumulation at the concave vertical curve of the bridge deck of long and steep municipal viaducts under heavy rainfall, improve the drainage efficiency of the bridge deck in this area, and improve the traffic environment.

[0005] To achieve the above objectives, the present invention provides the following solution: The present invention provides a bridge expansion joint with rapid drainage function, including a cover plate, a drainage ditch, a waterstop, fasteners, and an embedded structure of the beam.

[0006] The drainage ditch is vertically located within the expansion joint slot of the beam, with the expansion joint slot at the same height as the leveling layer and pavement layer. The drainage ditch is longitudinally located on both sides of the beam's expansion joint and laterally arranged linearly along the width of the beam. The cover plate is located within the pavement layer, above the drainage ditch.

[0007] The waterstop is located inside the bridge expansion joint, below the cover plate. After the water collection ditch is installed, steel fiber reinforced concrete is poured into the slot of the expansion device.

[0008] Furthermore, the cover plate has a square through hole and a circular slot. The square through hole is located within the projected plane of the water collection ditch.

[0009] Furthermore, the water collection ditch is formed by welding together a top plate, side plates, and bottom plate of the water collection ditch.

[0010] An open plate is provided on the outer side of the water collection ditch side plate, and a through steel bar is provided in the open plate. The open plate is welded to the embedded structure of the beam body to fix the water collection ditch to the beam body.

[0011] Furthermore, the embedded structure of the beam body adopts U-shaped steel bars with the U-shaped opening facing upwards, so as to facilitate adjustment of the opening size and facilitate the installation of the water collection ditch. The embedded structure of the beam body also includes two corner embedded steel bars, which are placed inside the U-shaped steel bars.

[0012] Furthermore, the top plate of the water collection ditch has a circular through hole, and a stiffening plate is installed inside the water collection ditch. The stiffening plate is arranged correspondingly to the perforated plate, and the circular through hole and the perforated plate are arranged at intervals along the extension direction of the water collection ditch.

[0013] Furthermore, a waterproof pad is provided above the bottom plate of the water collection ditch, and the waterproof pad is sloped along the extension direction of the water collection ditch so that rainwater in the water collection ditch can be quickly discharged under the action of gravity.

[0014] Furthermore, a mortar leveling layer is provided below the bottom plate of the water collection ditch. This facilitates adjustment of the lateral height difference of the water collection ditch during installation.

[0015] Furthermore, an outlet is provided at the end of the water collection ditch to connect with a drainage pipe.

[0016] Furthermore, the cover plate and the water collection ditch are connected by fasteners, which include a screw and a nut. The screw is U-shaped, with its bottom located below the perforated plate. The U-shaped screw extends vertically upward through the circular through-hole in the top plate of the water collection ditch and the circular slot in the cover plate. The nut is installed within the circular slot in the cover plate. One screw corresponds to every two circular through-holes along the extension direction of the water collection ditch. This fastener connection allows for a detachable connection, featuring a simple structure, reliable connection, and easy disassembly, facilitating maintenance of the telescopic device and cleaning of the water collection ditch.

[0017] Furthermore, the circular slots in the cover plate are layered, with the upper layer having a larger diameter than the lower layer. The lower layer has a diameter larger than the screw size but smaller than the nut size. The upper layer has a diameter larger than the nut size.

[0018] Furthermore, the cover plate is assembled in modules laterally, which facilitates its disassembly.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] This invention discloses a bridge expansion joint with rapid drainage function. Through square through-holes in the cover plate, water accumulated at the concave vertical curve of the bridge deck can be quickly drained into a drainage ditch located below. The linear drainage ditch has a higher drainage capacity than the point-like transverse rainwater inlets, allowing rainwater to be quickly discharged into the municipal drainage system, thereby improving the bridge deck's drainage capacity. This addresses the issue of water accumulation at the concave vertical curve of the bridge deck on long, steeply sloping municipal viaducts during heavy rainfall, improving drainage efficiency in this area and improving the traffic environment. Attached Figure Description

[0021] Figure 1 This is a cross-sectional view of a specific embodiment of the present invention;

[0022] Figure 2 This is a side view of a specific embodiment of the present invention;

[0023] Figure 3 This is an isometric view of the cover plate according to a specific embodiment of the present invention;

[0024] Figure 4 This is an axonometric view of a water collection ditch according to a specific embodiment of the present invention;

[0025] Figure 5 This is a schematic cross-sectional view of a water collection ditch according to a specific embodiment of the present invention;

[0026] Figure 6 This is a schematic diagram of a fastener according to a specific embodiment of the present invention.

[0027] Numbers in the diagram:

[0028] 10. Cover plate; 11. Square through hole; 12. Circular slot; 20. Drainage ditch; 21. Top plate of drainage ditch; 22. Side plate of drainage ditch; 23. Bottom plate of drainage ditch; 24. Stiffening plate; 25. Perforated plate; 26. Through reinforcement; 27. Waterproof pad; 28. Circular through hole; 29. ​​Outlet; 30. Waterstop; 40. Fastener; 41. Screw; 42. Nut; 50. Beam; 51. Leveling layer; 52. Pavement layer; 53. Expansion joint slot; 54. Steel fiber reinforced concrete; 55. Embedded structure; 56. Mortar leveling layer; 60. Expansion joint;

[0029] 100. Bridge expansion joints with rapid drainage function. Detailed Implementation

[0030] The following specific examples illustrate the implementation of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and various details in this specification can be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the illustrations provided in the following embodiments are only schematic representations of the basic concept of the present invention. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0031] The accompanying drawings are for illustrative purposes only and are schematic diagrams, not actual pictures. They should not be construed as limiting the invention. To better illustrate the embodiments of the invention, some parts in the drawings may be omitted, enlarged, or reduced, and do not represent the actual product dimensions. It is understandable to those skilled in the art that some well-known structures and their descriptions are omitted in the drawings.

[0032] The purpose of this invention is to provide a bridge expansion joint with rapid drainage function to solve the problems existing in the prior art, change the phenomenon of water accumulation at the concave vertical curve of the bridge deck of long and steep municipal viaducts under heavy rainfall, improve the drainage efficiency of the bridge deck in this area, and improve the traffic environment.

[0033] like Figures 1 to 6 As shown, this embodiment provides a bridge expansion joint 100 with rapid drainage function, wherein the bridge expansion joint 100 with rapid drainage function includes a cover plate 10, a water collection ditch 20, a waterstop 30, fasteners 40, and an embedded structure 55 for the beam body 50.

[0034] In practical use, the drainage ditch 20 is vertically located within the expansion joint slot 53 of the beam 50, with the expansion joint slot 53 at the same height as the leveling layer 51 and the pavement layer 52. The drainage ditch 20 is longitudinally located on both sides of the bridge expansion joint 60, and laterally arranged linearly along the width of the beam 50. The cover plate 10 is located within the pavement layer 52, above the drainage ditch 20. The waterstop 30 is located within the bridge expansion joint 60, below the cover plate 10. After the drainage ditch 20 is installed, steel fiber reinforced concrete 54 is poured into the expansion joint slot 53.

[0035] In this embodiment, the cover plate 10 has a square through hole 11 and a circular slot 12. The square through hole 11 is located within the projection plane of the water collection ditch 20. In other embodiments, the specific shapes of the square through hole 11 and the circular slot 12 are not limited.

[0036] The water collection ditch 20 is formed by welding together the top plate 21, the side plate 22, and the bottom plate 23. An open plate 25 is provided on the outer side of the side plate 22, and a through steel bar 26 is provided inside the open plate 25. The open plate 25 is welded to the embedded structure 55 of the beam 50 to fix the water collection ditch 20 to the beam 50.

[0037] The embedded structure 55 of the beam 50 adopts U-shaped steel bars with the U-shaped opening facing upwards, so as to facilitate the adjustment of the opening size and facilitate the installation of the water collection ditch 20. The embedded structure 55 of the beam 50 also includes two corner embedded steel bars, which are placed inside the U-shaped steel bars.

[0038] In this embodiment, a circular through hole 28 is provided on the top plate 21 of the water collection ditch, and a stiffening plate 24 is provided inside the water collection ditch 20. The stiffening plate 24 and the perforated plate 25 are arranged correspondingly, and the circular through hole 28 and the perforated plate 25 are arranged at intervals along the extension direction of the water collection ditch 20. In other embodiments, the specific shape of the circular through hole 28 is not limited.

[0039] A waterproof pad 27 is installed above the bottom plate 23 of the water collection ditch. The waterproof pad 27 is sloped along the extension direction of the water collection ditch 20 so that rainwater in the water collection ditch 20 can be quickly discharged under the action of gravity.

[0040] A mortar leveling layer 56 is set below the bottom plate 23 of the water collection ditch to facilitate adjustment of the lateral height difference of the water collection ditch during installation.

[0041] In this embodiment, an outlet 29 is provided at the end of the water collection ditch 20 and connected to the drainage pipe. The outlet 29 is located on the bottom plate 23 of the water collection ditch. In other embodiments, the specific location of the outlet 29 is not limited.

[0042] The cover plate 10 and the water collection ditch 20 are connected by fasteners 40, which include a screw 41 and a nut 42. The screw 41 is U-shaped, with its bottom located below the perforated plate 25. The U-shaped screw 41 extends vertically upward through the circular through-hole 28 in the top plate 21 of the water collection ditch and the circular slot 12 in the cover plate 10. The nut 42 is installed in the circular slot 12 in the cover plate 10. One screw 41 corresponds to every two circular through-holes 28 in the extension direction of the water collection ditch 20. The fastener connection allows for detachable connection, featuring a simple structure, reliable connection, and convenient disassembly, facilitating maintenance of the telescopic device 100 and cleaning of the water collection ditch 20.

[0043] The cover plate has 12 layers of circular slots, with the upper layer having a larger diameter than the lower layer. The lower layer has a larger diameter than the screw 41 but smaller than the nut 42. The upper layer has a larger diameter than the nut 42.

[0044] The cover plate 10 is assembled in a modular fashion, which facilitates its disassembly.

[0045] In this embodiment, the square through-holes 11 on the cover plate 10 allow water accumulated at the concave vertical curve of the bridge deck to be quickly drained into the drainage ditch 20 located below. The linear drainage ditch 20 has a higher drainage capacity than the point-like transverse rainwater inlets, enabling rainwater to be quickly discharged into the municipal drainage system, thereby improving the bridge deck's drainage capacity. This changes the phenomenon of water accumulation at the concave vertical curve of the bridge deck on long, steeply sloping municipal viaducts under heavy rainfall conditions, improving the bridge deck drainage efficiency in this area and improving the traffic environment.

Claims

1. A bridge expansion joint with rapid drainage function, characterized in that, The structure includes a cover plate (10), a water collection ditch (20), a waterstop (30), fasteners (40), and an embedded structure (55) for the beam (50). The water collection ditch (20) is vertically located in the expansion joint slot (53) of the beam (50). The height of the expansion joint slot (53) is equal to that of the leveling layer (51) and the pavement layer (52). The water collection ditch (20) is longitudinally located on both sides of the beam expansion joint (60). The water collection ditch (20) is arranged linearly along the width direction of the beam (50). The cover plate (10) is located inside the paving layer (52) and above the drainage ditch (20); The waterstop (30) is located inside the expansion joint (60) and below the cover plate (10); after the water collection ditch (20) is installed, steel fiber concrete (54) is poured into the slot (53) of the expansion device; The water collection ditch (20) is formed by welding together a top plate (21), a side plate (22), and a bottom plate (23). An open plate (25) is provided on the outside of the side plate (22), and a through steel bar (26) is provided inside the open plate (25). The open plate (25) is welded to the embedded structure (55) of the beam (50) so that the water collection ditch (20) is fixed to the beam (50). A circular through hole (28) is provided in the top plate (21) of the water collection ditch (20). A stiffening plate (24) is provided inside the water collection ditch (20). The stiffening plate (24) is arranged correspondingly to the perforated plate (25). The circular through hole (28) and the perforated plate (25) are arranged at intervals along the extension direction of the water collection ditch (20). A waterproof pad (27) is provided above the bottom plate of the water collection ditch (20). The waterproof pad (27) is sloped along the extension direction of the water collection ditch (20) so that rainwater in the water collection ditch (20) can be quickly discharged under the action of gravity. A mortar leveling layer (56) is provided below the bottom plate of the water collection ditch (20). An outlet (29) is provided at the end of the water collection ditch (20) and connected to a drainage pipe. The cover plate (10) and the water collection ditch (20) are connected by the fastener (40), which includes a screw (41) and a nut (42). The screw (41) is U-shaped, with the bottom of the U-shaped screw located below the perforated plate (25). The U-shaped screw extends vertically upward through the circular through hole (28) on the top plate of the water collection ditch (20) and the circular slot (12) of the cover plate (10). The nut (42) is installed in the circular slot (12) of the cover plate (10). Every two circular through holes (28) in the extension direction of the water collection ditch (20) correspond to one screw (41). The fastener (40) is used to connect the two parts, which is a detachable connection. It has the characteristics of simple structure, reliable connection and convenient disassembly, which facilitates the maintenance of the telescopic device and the cleaning of the water collection ditch (20).

2. The bridge expansion joint with rapid drainage function according to claim 1, characterized in that, The cover plate (10) has a square through hole (11) and a circular slot (12); The square through hole (11) is located within the projection plane of the water collection ditch (20).

3. The bridge expansion joint with rapid drainage function according to claim 1, characterized in that, The embedded structure (55) of the beam (50) adopts U-shaped steel bars with the U-shaped opening facing upward, so as to facilitate the adjustment of the opening size and facilitate the installation of the water collection ditch (20); the embedded structure (55) of the beam (50) also includes two corner embedded steel bars, which are placed inside the U-shaped steel bars.

4. The bridge expansion joint with rapid drainage function according to claim 1, characterized in that, The circular slot (12) of the cover plate (10) is layered, with the upper hole diameter being larger than the lower hole diameter; the lower hole diameter is larger than the size of the screw (41) and smaller than the size of the nut (42); the upper hole diameter is larger than the size of the nut (42).

5. The bridge expansion joint with rapid drainage function according to claim 1, characterized in that, The cover plate (10) is assembled in a modular manner in the horizontal direction, which makes it easy to disassemble the cover plate (10).

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