Pedestrian overpass

Abstract

The utility model relates to a pedestrian overpass which comprises a first overpass body, a second overpass body, a suspension device, a stairway and a connecting channel. The first bridge body is installed on a box girder bottom plate of the overpass bridge through a suspension device, the second bridge bodies are arranged at the two ends of the first bridge body, the height of the bridge surface of each second bridge body is larger than that of the bridge surface of the first bridge body, and the first bridge body and the second bridge bodies are connected through connecting channels. The stairway is arranged at the end, away from the first bridge body, of the second bridge body. On one hand, an effective space formed by the overpass bridge cantilevers is fully utilized, the bridge floor of the pedestrian overpass is sunk, the length and the height of the stairway of the overpass are reduced, and on the basis of reducing the crossing distance of pedestrians on plots on the two sides of a road, the comfort of the pedestrians on the overpass is improved; and on the other hand, by adopting the suspension type pedestrian overpass structure, the construction cost is saved, meanwhile, space is provided for arrangement of municipal infrastructures under the overpass, and intensive and efficient road space is achieved.

Description

Technical Field

[0001] This utility model relates to the field of bridge engineering technology, and in particular to a pedestrian overpass. Background Technology

[0002] As urban traffic volume continues to rise, the demand for pedestrian safety is increasing. Therefore, constructing pedestrian overpasses at busy intersections and road sections has become an important measure in urban planning. These facilities effectively reduce conflict points between pedestrians and vehicles by separating pedestrian and vehicular traffic flows, thereby lowering the traffic accident rate and improving road efficiency.

[0003] With the rapid increase in the number of motor vehicles, elevated roads have become a key facility for managing traffic flow. Currently, pedestrian crossings are mostly concentrated at ground-level intersections, but due to the high volume of traffic, the risk of traffic accidents has increased significantly, and the detour distance for pedestrians and non-motorized vehicles on both sides of the elevated roads has also been greatly extended.

[0004] There are two main types of pedestrian overpasses on existing elevated road sections. First, the overpass is placed above the overpass itself. This requires significantly raising the approach ramps and staircases, making it inconvenient for pedestrians to access the overpass. Furthermore, the long staircases occupy a large amount of sidewalk space, affecting the efficiency of urban road use and significantly increasing construction costs. Second, the overpass is located between the main elevated road and the auxiliary road. To ensure the minimum clearance required for pedestrian passage, the design of the main road elevation is often more complex. This layout is also extremely disadvantageous for future modifications to the overpass to include pedestrian overpasses, presenting numerous limitations. Summary of the Invention

[0005] The purpose of this utility model is to provide a pedestrian overpass to solve the problem of excessively long stairways when the overpass is set above an overpass.

[0006] To achieve the above objectives, this utility model discloses a pedestrian overpass, comprising: a first bridge body, a second bridge body, a suspension device, a stairway, and a connecting passage; the first bridge body is installed on the bottom plate of the overpass box girder via the suspension device, the second bridge body is located at both ends of the first bridge body, the height of the second bridge body's deck is higher than the height of the first bridge body's deck, the first bridge body and the second bridge body are connected by a connecting passage, and the stairway is located at the end of the second bridge body away from the first bridge body.

[0007] Preferably, the suspension device includes a hanger, a first connecting seat, a first pin, a second connecting seat, and a second pin. The first connecting seats are spaced apart on both sides along the passage direction of the first bridge body. The second connecting seat is installed on the bottom plate of the box girder of the overpass. The hanger is connected to the first connecting seat through the first pin, and the hanger is connected to the second connecting seat through the second pin. The first pin and the second pin are perpendicular to each other.

[0008] Preferably, the spacing between the suspension rods is 5m.

[0009] Preferably, the first bridge body adopts a steel box girder structure, and guardrails are installed on the first bridge body.

[0010] Preferably, the second bridge body adopts a steel box girder structure, and the two ends of the second bridge body are provided with first support columns connected to the ground.

[0011] Preferably, the bottom of the stairway is provided with a second support column connected to the ground.

[0012] Preferably, the connecting channel is a stainless steel step with a slope of 1:2 and the surface of the step is provided with anti-slip texture.

[0013] Preferably, the bridge decks of the first and second bridge bodies are paved with rough-surfaced granite.

[0014] This utility model has the following beneficial effects:

[0015] 1. This utility model makes full use of the effective space formed by the cantilever of the overpass, lowers the pedestrian overpass deck, and reduces the length and height of the overpass stairways. This reduces the detour distance for pedestrians on both sides of the road and improves the comfort of pedestrians going up the bridge. On the other hand, the suspended pedestrian overpass structure saves on construction costs and provides space for the installation of municipal infrastructure under the bridge, achieving intensive and efficient use of road space.

[0016] 2. This utility model is convenient and efficient to construct. The steel box girder structure can be prefabricated in the factory and installed on site, which can shorten the construction time, reduce the construction difficulty, and reduce the impact on the surrounding area.

[0017] 3. The structure of this utility model is stable and reasonable. The suspension device is connected to the suspension rod through the first and second connecting seats and mutually perpendicular pins, which is stable, easy to install, adaptable to deformation, flexible in adjustment, and compact in structure. Support columns are set at both ends of the second bridge body and the bottom of the stairway to provide stable support for the bridge body and stairway, distribute the load, adapt to different terrains, enhance overall stability, and facilitate maintenance. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall mechanism provided in a specific embodiment of the present utility model;

[0019] Figure 2 This is an overall top view diagram provided in a specific embodiment of the present utility model;

[0020] Figure 3 This is a cross-sectional schematic diagram of the first bridge body provided in a specific embodiment of the present utility model;

[0021] Figure 4 This is a schematic diagram of the installation of the boom and the second mounting base provided in a specific embodiment of the present utility model;

[0022] Figure 5 This is a schematic diagram of the installation of the hanger and the first mounting base provided in a specific embodiment of this utility model.

[0023] Explanation of symbols for main components:

[0024] 1. Box girder bottom plate of the overpass; 2. Hanger; 3. First bridge body; 4. Connecting passage; 5. Second bridge body; 6. Stairway; 7. First support column; 8. Second support column; 9. First mounting seat; 10. Second mounting seat; 11. Second pin; 12. Guardrail; 13. Stairway pier; 14. First axle pin. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments.

[0026] like Figures 1-5 This utility model provides a pedestrian overpass, comprising: a first bridge body 3, a second bridge body 5, a suspension device, a stairway 6, and a connecting passage 4; the first bridge body 3 is installed on the bottom plate 1 of the box girder of the overpass via the suspension device, the second bridge body 5 is located at both ends of the first bridge body 3, and the stairway 6 is located at the end of the second bridge body 5 away from the first bridge body 3.

[0027] The first bridge body 3 is installed on the bottom plate 1 of the box girder of the overpass through a suspension device, which makes full use of the space under the viaduct and provides a pedestrian crossing without taking up additional ground space. This avoids interference with ground traffic and the layout of surrounding buildings caused by the construction of the overpass. It is especially suitable for areas with limited ground space and high traffic volume, and improves the utilization rate of urban space.

[0028] The second bridge section 5 is higher than the first bridge section 3, and the first bridge section 3 and the second bridge section 5 are connected by a connecting passage 4. This design allows the overpass to better span roads or obstacles of different heights, ensuring that pedestrians can cross safely and smoothly. At the same time, the higher second bridge section 5 reduces interference with vehicles on the road below, ensuring normal traffic flow and improving traffic safety and efficiency.

[0029] In this embodiment, the pedestrian overpass has a clearance height of 2.5m, and the auxiliary road has a clearance height of 4.5m. The overpass stairways 6 are symmetrically arranged along the center line of the road to achieve natural diversion of pedestrian traffic in both directions.

[0030] The suspension device includes a hanger 2, a first connecting seat, a first pin, a second connecting seat, and a second pin 11. The first connecting seats are spaced apart on both sides along the travel direction of the first bridge body 3. The second connecting seat is installed on the bottom plate 1 of the box girder of the overpass. The hanger 2 is connected to the first connecting seat through the first pin, and the hanger 2 is connected to the second connecting seat through the second pin 11. The first pin and the second pin 11 are perpendicular to each other to prevent the bridge structure from undergoing large lateral deformation and instability.

[0031] The mutually perpendicular first and second pins 11 allow the hanger 2 to have a certain degree of rotational freedom in both directions. This can accommodate the minor deformations of the overpass box girder caused by vehicle traffic and the expansion and contraction deformation of the overpass itself due to factors such as temperature changes, avoiding excessive stress concentration in the overpass structure caused by these deformations, and improving the durability and safety of the overpass.

[0032] In this embodiment, the spacing between the hangers 2 is 5m. The first connecting seat is fixed to the first bridge body 3 by penetration welding. If the viaduct is a newly built viaduct, the second connecting seat can be fixed by pre-embedded bolts; if it is an existing viaduct, it can be connected and fixed by chemical anchoring.

[0033] The first bridge section 3 adopts a steel box girder structure, which is lighter than some traditional concrete structures. This is crucial for the first bridge section 3, which is installed on the bottom slab 1 of the overpass box girder via a suspension system. Reducing its weight decreases the pressure on the suspension system and the overpass box girder, lowers the difficulty of structural design and construction, and also facilitates the construction of the overpass within a limited space. Furthermore, steel has high strength and rigidity, enabling it to withstand significant loads. The steel box girder structure effectively supports the weight of pedestrians on the overpass as well as other potential loads such as wind and seismic forces, ensuring the safety and stability of the overpass.

[0034] The second bridge section 5 adopts a steel box girder structure. The high strength of the steel box girder structure allows it to withstand the weight of the second bridge section 5 itself, pedestrian loads, and other potential external forces such as wind and seismic forces, ensuring the safety and stability of the bridge during use and guaranteeing safe pedestrian passage. Furthermore, the steel box girders can be prefabricated in the factory and then transported to the site for installation. This prefabricated assembly construction method significantly shortens on-site construction time, reduces the impact on surrounding traffic and residents' lives, and also helps ensure construction quality and reduce construction difficulty.

[0035] The first bridge section 3 is equipped with guardrails 12. The guardrails 12 can prevent pedestrians from falling from the edge of the bridge, especially in situations where there are many pedestrians, it is crowded, or pedestrians are not paying attention. It provides reliable protection for pedestrians, reduces the risk of accidents, and ensures the safety of pedestrians.

[0036] The second bridge body 5 has first support columns 7 connected to the ground at both ends. These first support columns 7 serve as bridge piers. Connecting the second bridge body 5 to the ground, the first support columns 7 provide stable support points, distribute the weight of the bridge body, reduce the burden on the suspension system, and enhance the stability and reliability of the entire overpass structure. Especially in the event of large loads or natural disasters, the support columns can effectively transfer the force to the ground, improving the overpass's disaster resistance. The second bridge body 5 is located above the auxiliary road. The first support columns 7, closer to the inner side of the auxiliary road, can be placed within the central median strip, while those closer to the outer side of the auxiliary road can be placed at appropriate locations on the sidewalk.

[0037] A second support column 8, connected to the ground, is installed at the bottom of stairway 6. The second support column 8 serves as a bridge pier. Transferring the load of stairway 6 to the ground via the second support column 8 effectively distributes the load, reduces stress at the connection between stairway 6 and the second bridge body 5, prevents damage to the connection due to excessive concentrated load, and extends the service life of stairway 6 and the entire overpass. The second support column 8 is located on the sidewalk.

[0038] Connecting passage 4 features stainless steel steps. Stainless steel possesses high strength and hardness, capable of withstanding frequent pedestrian traffic without easily deforming or wearing down, ensuring the structural stability and safety of the steps over long-term use and extending their service life, thus reducing the cost of later maintenance and replacement. The steps have a 1:2 slope, which is relatively gentle, allowing pedestrians to walk with minimal body tilt and a more natural gait, without feeling overly strenuous or in danger. This provides a comfortable walking experience, making it especially suitable for the elderly, children, disabled individuals, and pedestrians carrying heavy objects.

[0039] The steps feature an anti-slip textured surface. This texture significantly increases the friction between the step surface and the soles of shoes, effectively preventing pedestrians from slipping even in wet, water-stained, or snow-covered conditions, greatly improving walking safety and reducing the probability of accidents. Furthermore, the anti-slip texture is created through a brushed process, resulting in a tight bond with the stainless steel material. It is resistant to wear and tear, maintaining excellent anti-slip performance over long-term use, eliminating the need for frequent maintenance and replacement, and reducing operating costs.

[0040] The bridge decks of the first bridge body 3 and the second bridge body 5 are paved with rough-surfaced granite. The rough surface of the granite provides high friction, effectively preventing pedestrians from slipping and ensuring pedestrian safety even in rainy or damp conditions. Furthermore, granite is hard and highly wear-resistant, capable of withstanding the footsteps of many pedestrians and the passage of small vehicles. It is not prone to wear or potholes, maintaining the flatness and integrity of the bridge deck for a long time, thus reducing maintenance costs and frequency.

[0041] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present utility model should be included within the protection scope of the present utility model.

Claims

1. A pedestrian overpass, characterized in that, include: The bridge consists of a first bridge body (3), a second bridge body (5), a suspension device, a stairway (6), and a connecting passage (4). The first bridge body (3) is installed on the bottom plate (1) of the box girder of the overpass via a suspension device. The second bridge body (5) is located at both ends of the first bridge body (3). The height of the bridge deck of the second bridge body (5) is higher than the height of the bridge deck of the first bridge body (3). The first bridge body (3) and the second bridge body (5) are connected by a connecting passage (4). The stairway (6) is located at the end of the second bridge body (5) away from the first bridge body (3).

2. A pedestrian overpass according to claim 1, characterized in that: The suspension device includes a hanger (2), a first connecting seat, a first pin, a second connecting seat, and a second pin (11). The first connecting seat is spaced apart on both sides along the passage direction of the first bridge body (3). The second connecting seat is installed on the bottom plate (1) of the box girder of the overpass. The hanger (2) is connected to the first connecting seat through the first pin. The hanger (2) is connected to the second connecting seat through the second pin (11). The first pin and the second pin (11) are perpendicular to each other.

3. A pedestrian overpass according to claim 2, characterized in that: The spacing between the hangers (2) is 5m.

4. A pedestrian overpass according to claim 1, characterized in that: The first bridge body (3) adopts a steel box girder structure, and a guardrail (12) is installed on the first bridge body (3).

5. A pedestrian overpass according to claim 1, characterized in that: The second bridge body (5) adopts a steel box girder structure, and the two ends of the second bridge body (5) are provided with first support columns (7) connected to the ground.

6. A pedestrian overpass according to claim 1, characterized in that: The bottom of the stairway (6) is provided with a second support column (8) that is connected to the ground.

7. A pedestrian overpass according to claim 1, characterized in that: The connecting channel (4) is a stainless steel step with a slope of 1:2 and an anti-slip texture on the surface of the step.

8. A pedestrian overpass according to claim 1, characterized in that: The bridge decks of the first bridge body (3) and the second bridge body (5) are paved with rough-surfaced granite.

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