Bridge structure for cross-shaped intersection

Abstract

The utility model discloses a bridge structure for a cross-shaped intersection, which belongs to the technical field of overpass, and comprises four main piers arranged at the corners of four sidewalks, a main beam is placed on the main piers, the main beam is formed by butt joint of the bottoms of two Y-shaped structures, a hollow part is arranged at the grade intersection of the main beam, and the cross-shaped structure is arranged in the hollow part. The bridge structure forms a roundabout at the grade crossing position, and the position of the corner of the Y-shaped structure is arranged to be an arc. According to the utility model, the detouring distance of pedestrians can be reduced, the investment is reduced, and in addition, the roundabout formed by hollowing at the intersection of the bridge is arranged, so that the pedestrians can be organized to cross the street more orderly and more conveniently.

Description

Technical Field

[0001] The utility model belongs to the technical field of pedestrian overpasses, and in particular relates to a bridge structure used for a cross-shaped intersection. Background Art

[0002] A pedestrian overpass is a kind of building in a modern city that helps pedestrians cross the road. The construction of a pedestrian overpass can completely separate pedestrians crossing the road from vehicles on the road, ensuring smooth traffic and pedestrian safety. With the development of cities, the scale of urban roads is getting larger and larger, and the width of roads is getting wider and wider, resulting in larger and larger road intersections. It is also more and more difficult to set up pedestrian overpasses at urban road intersections. Existing pedestrian bridges at cross-shaped intersections are mostly in the form of multiple independent pedestrian overpasses that span across all directions. This method has disadvantages such as long detours, large scale, and high investment. Alternatively, a "cross"-shaped plane is used to cross the intersection. When the flow of people is large, this method is prone to blockage at the intersection, affecting the ability to smooth traffic. Utility Model Content

[0003] In order to solve the problems of large size, high investment and many detours in existing pedestrian bridges at cross-shaped intersections, the purpose of the utility model is to provide a bridge structure for cross-shaped intersections, which perfectly combines the plane "I" shape and "X" shape, reduces the detour distance for pedestrians and reduces investment; coupled with the roundabout formed by the hollowing out at the intersection of the bridge, pedestrians can be organized to cross the street in a more orderly and convenient manner.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a bridge structure for a cross-shaped intersection, the bridge structure is located at the cross-shaped intersection, and includes four main piers arranged at four corners of sidewalks, a main beam is placed on the main piers, and the main beam is formed by connecting the bottoms of two "Y"-shaped structures, and a hollow is arranged at the plane intersection of the main beam, so that the bridge structure forms a roundabout at the plane intersection, and the position of the corner of the "Y"-shaped structure is set to be an arc.

[0005] Optionally, the bridge structure further comprises a main pier foundation placed in an engineering geological foundation layer below the ground surface, and a pier cap is located between the main pier foundation and the main pier, and the top of the main pier foundation and the bottom of the main pier are connected into a whole through the pier cap.

[0006] Optionally, the main pier is connected to the main beam via a bearing pad stone and a bearing, the bearing pad stone is placed on the top of the main pier; the bearing is placed on the bearing pad stone by welding or embedded bolts, and the main beam is placed on the bearing by welding or embedded bolts.

[0007] Optionally, a seismic stopper is provided at the lower end of the main beam, and the seismic stopper is located at the outer periphery of the main bridge pier.

[0008] Optionally, a vertical elevator is provided at the end of the main beam.

[0009] Optionally, it also includes steps for connecting the bridge deck and the ground, the end of the main beam has a main beam corbel, the step support is resting on the main beam corbel and the top of the step pier, the step is placed on the step support, and the step support is respectively connected to the main beam corbel, the top of the step pier and the step by welding or anchor bolts.

[0010] Furthermore, a step bridge pier foundation is arranged at the bottom of the step bridge pier, and the step bridge pier foundation is arranged in a ground base verified by engineering geology below the ground surface.

[0011] Optionally, anti-collision piers are provided between the main bridge piers and the roadway edge.

[0012] Compared with the prior art, the present invention has at least the following beneficial effects:

[0013] (1) Compared with traditional pedestrian bridges at intersections, this one is very convenient for pedestrians. Pedestrians can reach their destination in a shorter distance. In addition, the roundabout formed by the hollowing out of the bridge intersection allows pedestrians to cross the street in a more orderly and convenient manner.

[0014] (2) The plane of the bridge is composed of two "Y"-shaped bottoms connected together, and then chamfered with arcs. The plane line of the bridge is very beautiful.

[0015] (3) Compared with the traditional "I"-shaped pedestrian overpass at an intersection, the utility model bridge does not have piers in the middle of the road or at the intersection, which improves the visibility of traffic under the bridge and reduces the safety hazards of traffic under the bridge to the overpass.

[0016] (4) Compared with pedestrian bridges at intersections of the same size, the bridge is smaller in size, which saves investment and shortens the construction period.

[0017] (5) The bridge is hollowed out at the intersection to form a roundabout, which not only better organizes pedestrian traffic, but also improves the lighting under the bridge, providing better lighting. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0019] Figure 1 It is a schematic diagram of the plane layout of the utility model;

[0020] Figure 2 It is a schematic diagram of the main bridge elevation layout of the utility model;

[0021] Figure 3 It is a schematic diagram of the step arrangement of the utility model;

[0022] Figure 4 It is a partial schematic diagram of the pier top support of the utility model;

[0023] Figure 5 This is a schematic diagram of the steel box girder structure of the utility model;

[0024] Figure 6 This is a schematic diagram of the steel truss structure of the utility model;

[0025] Figure 7 This is a schematic diagram of pedestrian traffic organization on the bridge deck of the utility model;

[0026] Figure 8 This is a schematic diagram of the bridge support arrangement of the utility model;

[0027] Fig. 9 This is a schematic diagram of temporary support arrangement for construction of the utility model;

[0028] Fig.10 This is a large-scale drawing of the connection between the step and the main beam of the utility model.

[0029] In the figure: 1. Main beam; 2. Plane intersection; 3. Hollowing; 4. Main bridge pier; 5. Vertical elevator; 6. Step; 7. Roadway edge; 8. Roadway; 9. Main bridge pier abutment; 10. Main bridge pier foundation; 11. Step bridge pier; 12. Step bridge pier foundation; 13. Seismic stopper; 14. Support; 15. Support pad stone; 16. Steel box beam; 17. Steel truss beam; 18. Steel box beam top plate; 19. Steel box beam web plate; 20. Steel box beam bottom plate; 21. Steel truss beam cross beam; 22. Steel truss beam chord; 23. Steel truss beam web member; 24. Steel truss beam bridge deck; 25. Temporary support; 26. Main beam corbel; 27. Anti-collision pier; 28. Step support. DETAILED DESCRIPTION

[0030] It should be noted that the following detailed descriptions are exemplary and are intended to provide further explanation of the present application. Unless otherwise specified, all technical and scientific terms used herein have the same meanings as those commonly understood by those skilled in the art to which the present application belongs.

[0031] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when "comprising" and / or "including" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0032] As introduced in the background technology, traditional pedestrian bridges at cross-shaped intersections are mostly in the form of multiple independent pedestrian bridges that cross each direction. This method has disadvantages such as long detours, large scale, and high investment; or a "cross"-shaped plane is used to cross the intersection. When the flow of people is large, this method is easy to form a blockage at the intersection, affecting the ability of traffic to flow smoothly. In order to solve the above technical problems, the utility model proposes a bridge structure that is more economical, more convenient to construct, less investment, and more convenient for pedestrians to cross the street. The structure of the utility model is further described below in conjunction with the accompanying drawings.

[0033] A bridge structure used for a cross-shaped intersection, such as Figure 1 , Figure 2 , Figure 3 As shown, the bridge structure is located at a crossroad, including: four main bridge piers 4 set at the corners of four sidewalks, with a main beam 1 placed on the main bridge piers 4, the main beam 1 is formed by two "Y"-shaped structures butted at the bottom, and a hollow 3 is set at the plane intersection 2 of the main beam 1, so that the bridge structure forms a roundabout at the plane intersection 2, which not only effectively organizes pedestrian traffic, but also increases the lighting under the bridge, making the structural rigidity of the intersection greater, and improving the force-bearing performance of the structure. The bridge structure also includes a main bridge pier foundation 10 placed in the engineering geological foundation layer below the surface, and a bridge pier cap 9 is located between the main bridge pier foundation 10 and the main bridge pier 4, and the top of the main bridge pier foundation 10 and the bottom of the main bridge pier 4 are connected as a whole through the bridge pier cap 9.

[0034] Furthermore, in order to avoid stress concentration on the superstructure and to increase the width of the bridge deck at the pedestrian intersection so that pedestrians can walk comfortably, the position of the "Y"-shaped structure corner is set to an arc.

[0035] like Figure 4 As shown, the main pier 4 is connected to the main beam 1 through a support pedestal 15 and a support 14. The support pedestal 15 is placed on the top of the main pier 4 and is fixedly connected to the main pier 4. The support pedestal 15 can be cast with reinforced concrete or welded with steel plates. The support 14 is placed on the support pedestal 15 by welding or pre-embedded bolts, and the main beam 1 is placed on the support 14 by welding or pre-embedded bolts. The seismic stopper 13 is welded to the main beam 1 and is located on the outer periphery of the main pier 4. If the main beam 1 has a large displacement, the main pier 4 will block the horizontal movement of the main beam 1 through the seismic stopper 13. In the utility model, Figure 8 As shown, the support 14 is divided into a fixed support and a movable support, and the movable support is further divided into a unidirectional movable support and a bidirectional movable support, which solves the horizontal displacement of the upper structure caused by horizontal loads by fixed or directional sliding.

[0036] like Figure 5 and Figure 6As shown, the main beam 1 can adopt a steel box beam 16 or a steel truss beam 17. The steel box beam 16 includes a steel box beam top plate 18, a steel box beam web 19 and a steel box beam bottom plate 20, and the steel box beam top plate 18, the steel box beam web 19 and the steel box beam bottom plate 20 are connected by welding; the steel truss beam 17 includes a steel truss beam cross beam 21, a steel truss beam chord 22, a steel truss beam web 23 and a steel truss beam bridge deck 24, and the steel truss beam cross beam 21, the steel truss beam chord 22, the steel truss beam web 23 and the steel truss beam bridge deck 24 are connected by welding or anchor bolts.

[0037] like Figure 1 As shown, the bridge structure adopts a vertical elevator 5 to meet barrier-free requirements. The vertical elevator 5 is located at the end of the main beam 1, which not only ensures barrier-free passage, but also ensures waiting space in front of the elevator. The vertical elevator 5 can be a sightseeing elevator or a common vertical elevator, and the elevator shaft can be made of glass curtain wall and concrete structure.

[0038] like Figure 7 , Fig.10 As shown, the step 6 connects the bridge deck and the ground, the main beam 1 has a main beam corbel 26 at the end, the step support 28 is placed on the main beam corbel 26 and the top of the step pier 11, and the step 6 is placed on the step support 28. The step support 28 is respectively connected to the main beam corbel 26, the top of the step pier 11 and the step 6 by welding or anchor bolts to ensure the stability of the step. A step pier foundation 12 is set at the bottom of the step pier 11, and the step pier foundation 12 is set in the ground layer verified by engineering geology below the surface. Among them, the utility model sets the step 6 to a slope of 1:2 according to regulations, and the step 6 can adopt a steel structure or a reinforced concrete structure.

[0039] In the present invention, the main bridge pier 4 and the step bridge pier 11 can be made of light tube concrete columns or reinforced concrete columns. At the same time, in order to protect the operation safety of the bridge pier, Figure 2 As shown, a crash pier 27 is provided between the main bridge pier 4 and the roadway edge line 7, and a proper distance is left between the crash pier 27 and the main bridge pier 4. The roadway 8 is outside the roadway edge line 7.

[0040] During the specific implementation stage, due to the large size of the bridge, the entire bridge needs to be processed into several components, and then assembled on site to form the entire bridge. Fig. 9 As shown, in this process, the components can be assembled and welded through temporary supports 25.

[0041] The above is only a specific implementation of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be understood by anyone familiar with the technology within the technical scope disclosed by the present invention should be included in the scope of the present invention.

Claims

1. A bridge structure for a cross-shaped intersection, the bridge structure being located at the cross-shaped intersection and comprising four main bridge piers (4) arranged at four corners of a pedestrian walkway, characterized in that: A main beam (1) is placed on the main bridge pier (4), and the main beam (1) is formed by two "Y"-shaped structures butted at the bottom. A hollow (3) is provided at the plane intersection (2) of the main beam (1), so that the bridge structure forms a roundabout at the plane intersection (2), and the position of the corner of the "Y"-shaped structure is set to be an arc.

2. The bridge structure for a cross intersection according to claim 1, characterized in that: The bridge structure also includes a main pier foundation (10) placed in an engineering geological foundation layer below the ground surface, a pier cap (9) located between the main pier foundation (10) and the main pier (4), and the top of the main pier foundation (10) and the bottom of the main pier (4) are connected into a whole through the pier cap (9).

3. The bridge structure for a cross intersection according to claim 1, characterized in that: The main bridge pier (4) is connected to the main beam (1) via a support pedestal stone (15) and a support (14); the support pedestal stone (15) is placed on the top of the main bridge pier (4); the support (14) is placed on the support pedestal stone (15) via welding or pre-embedded bolts, and the main beam (1) is placed on the support (14) via welding or pre-embedded bolts.

4. The bridge structure for a cross intersection according to claim 1, characterized in that: An anti-seismic stopper (13) is provided at the lower end of the main beam (1), and the anti-seismic stopper (13) is located on the outer periphery of the main bridge pier (4).

5. The bridge structure for a cross intersection according to claim 1, characterized in that: A vertical elevator (5) is arranged at the end of the main beam (1).

6. The bridge structure for a cross intersection according to claim 1, characterized in that: It also includes a step (6) for connecting the bridge deck and the ground. The end of the main beam (1) has a main beam corbel (26). The step support (28) is placed on the main beam corbel (26) and the top of the step pier (11). The step (6) is placed on the step support (28). The step support (28) is connected to the main beam corbel (26), the top of the step pier (11) and the step (6) respectively by welding or anchor bolts.

7. The bridge structure for a cross intersection according to claim 6, characterized in that: A step bridge pier foundation (12) is arranged at the bottom of the step bridge pier (11), and the step bridge pier foundation (12) is arranged in a ground base verified by engineering geology below the ground surface.

8. The bridge structure for a cross intersection according to claim 1, characterized in that: A crash barrier (27) is provided between the main bridge pier (4) and the roadway edge line (7).

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